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Author SHA1 Message Date
Lindsey Heagy 122d9318bb don't test 3D mesh2mesh (too big at the moment) 2016-04-02 12:20:00 -07:00
Lindsey Heagy 2e642776ad use integrate = True for raw vet cross checks 2016-04-02 12:17:45 -07:00
Lindsey Heagy 274e2084d7 Merge branch 'em/dev' into em/primsec
# Conflicts:
#	SimPEG/EM/Utils/testingUtils.py
2016-04-02 08:52:24 -07:00
Lindsey Heagy bebcb60bbf - moved _GLoc to the problem (the problem should know where on the grid all the things live)
- continue hooking up prim-sec source (right now switching between EB - HJ formulations from prim to sec is a bit unstable)
2016-03-31 23:44:21 -07:00
Lindsey Heagy a478b976bc prim sec for different meshes with EB formulation 2016-03-31 13:27:29 -07:00
Lindsey Heagy bf300061bc test cyl2cly for mesh to mesh interpolation 2016-03-31 11:16:14 -07:00
Lindsey Heagy f972a50fce Merge branch 'em/dev' into em/primsec
# Conflicts:
#	SimPEG/EM/FDEM/FDEM.py
#	SimPEG/EM/FDEM/SrcFDEM.py
2016-03-29 22:59:01 -07:00
Lindsey Heagy 7aa50047ac mesh2mesh interpolation a bit slow and memory heavy right now -> might not want to return the mat, just perform the interpolation 2016-03-29 18:31:55 -07:00
Lindsey Heagy d11f5c736b prim-sec for EB formulation on same meshes 2016-03-29 09:59:13 -07:00
Lindsey Heagy d6daa93d9a Merge branch 'em/dev' into em/primsec
# Conflicts:
#	SimPEG/EM/FDEM/SrcFDEM.py
#	tests/em/fdem/inverse/adjoint/test_FDEM_adjointEB.py
2016-03-28 12:54:51 -07:00
Lindsey Heagy 0f7ae7f0fb start of checks for solvePrimary 2016-02-12 15:05:42 -08:00
Lindsey Heagy 645594efac start of being able to provide a primary problem 2016-02-10 16:55:08 -08:00
Lindsey Heagy 944fb1dfee Merge branch 'master' into em/primsec
# Conflicts:
#	SimPEG/EM/FDEM/SrcFDEM.py
2016-02-10 16:15:01 -08:00
Lindsey Heagy 436bc7af95 adjoint for PrimSec Src 2015-12-21 17:21:25 -08:00
Lindsey Heagy 8664a98e09 cleaned up how I am calling srcDerivs 2015-12-11 10:43:19 -08:00
Lindsey Heagy 6d56ebef52 typo fix 2015-12-10 19:42:22 -08:00
Lindsey Heagy a152c57ceb make ePrimary a vector (TODO: this is sloppy) 2015-12-10 19:33:15 -08:00
Lindsey Heagy 493982e65d start of PrimSecSigma E-B source 2015-12-10 18:49:40 -08:00
106 changed files with 2581 additions and 9160 deletions
-4
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@@ -25,10 +25,6 @@ SimPEG
:target: https://coveralls.io/r/simpeg/simpeg?branch=master
:alt: Coverage status
.. image:: http://img.shields.io/badge/GITTER-JOIN_CHAT-brightgreen.svg?style=flat-square
:alt: gitter chat room at https://gitter.im/simpeg/simpeg
:target: https://gitter.im/simpeg/simpeg
Simulation and Parameter Estimation in Geophysics - A python package for simulation and gradient based parameter estimation in the context of geophysical applications.
The vision is to create a package for finite volume simulation with applications to geophysical imaging and subsurface flow. To enable the understanding of the many different components, this package has the following features:
+215 -324
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@@ -1,16 +1,12 @@
from SimPEG import np, Utils
from SimPEG import np
import BaseDC as DC
import BaseDC as IP
import warnings
def getActiveindfromTopo(mesh, topo):
# def genActiveindfromTopo(mesh, topo):
"""
Get active indices from topography
"""
warnings.warn(
"`getActiveindfromTopo` is deprecated and will be removed in future versions. Use `SimPEG.Utils.surface2ind_topo` instead",
FutureWarning)
from scipy.interpolate import NearestNDInterpolator
if mesh.dim==3:
nCxy = mesh.nCx*mesh.nCy
@@ -32,9 +28,6 @@ def gettopoCC(mesh, airind):
"""
Get topography from active indices of mesh.
"""
warnings.warn(
"`gettopoCC` is deprecated and will be removed in future versions. Use `SimPEG.Utils.surface2ind_topo` instead",
FutureWarning)
mesh2D = Mesh.TensorMesh([mesh.hx, mesh.hy], mesh.x0[:2])
zc = mesh.gridCC[:,2]
AIRIND = airind.reshape((mesh.vnC[0]*mesh.vnC[1],mesh.vnC[2]), order='F')
@@ -125,27 +118,34 @@ def readUBC_DC3Dobstopo(filename,mesh,topo,probType="CC"):
def readUBC_DC2DModel(fileName):
"""
Read UBC GIF 2DTensor model and generate 2D Tensor model in simpeg
Read UBC GIF 2DTensor model and generate 2D Tensor model in simpeg
:param string fileName: path to the UBC GIF 2D model file
:rtype: TensorMesh
:return: SimPEG TensorMesh 2D object
Input:
:param fileName, path to the UBC GIF 2D model file
Output:
:param SimPEG TensorMesh 2D object
:return
Created on Thu Nov 12 13:14:10 2015
@author: dominiquef
"""
from SimPEG import np, mkvc
# Open fileand skip header... assume that we know the mesh already
obsfile = np.genfromtxt(fileName, delimiter=' \n', dtype=np.str, comments='!')
obsfile = np.genfromtxt(fileName,delimiter=' \n',dtype=np.str,comments='!')
dim = np.array(obsfile[0].split(), dtype=float)
dim = np.array(obsfile[0].split(),dtype=float)
temp = np.array(obsfile[1].split(), dtype=float)
temp = np.array(obsfile[1].split(),dtype=float)
if len(temp) > 1:
model = np.zeros(dim)
for ii in range(len(obsfile)-1):
mm = np.array(obsfile[ii+1].split(), dtype=float)
mm = np.array(obsfile[ii+1].split(),dtype=float)
model[:,ii] = mm
model = model[:,::-1]
@@ -153,10 +153,10 @@ def readUBC_DC2DModel(fileName):
else:
if len(obsfile[1:])==1:
mm = np.array(obsfile[1:].split(), dtype=float)
mm = np.array(obsfile[1:].split(),dtype=float)
else:
mm = np.array(obsfile[1:], dtype=float)
mm = np.array(obsfile[1:],dtype=float)
# Permute the second dimension to flip the order
model = mm.reshape(dim[1],dim[0])
@@ -169,25 +169,32 @@ def readUBC_DC2DModel(fileName):
return model
def plot_pseudoSection(DCsurvey, axs, surveyType='dipole-dipole', unitType='volt', clim=None, cblabel=True, axlabel = True, colorbar = True, contour = None):
def plot_pseudoSection(DCsurvey, axs, stype):
"""
Read list of 2D tx-rx location and plot a speudo-section of apparent
resistivity.
Read list of 2D tx-rx location and plot a speudo-section of apparent
resistivity.
Assumes flat topo for now...
Assumes flat topo for now...
:param SurveyDC DCsurvey:
:param string surveyType: Either 'pole-dipole' | 'dipole-dipole'
:param string unitType: Either 'appResistivity' | 'appConductivity' | 'volt'
:rtype: matplotlib.plt
:return: figure scatter plot overlayed on image
Input:
:param d2D, z0
:switch stype -> Either 'pdp' (pole-dipole) | 'dpdp' (dipole-dipole)
Output:
:figure scatter plot overlayed on image
Edited Feb 17th, 2016
@author: dominiquef
"""
from SimPEG import np
from scipy.interpolate import griddata
import pylab as plt
# Set depth to 0 for now
z0 = 0.
# Pre-allocate
midx = []
midz = []
@@ -214,117 +221,69 @@ def plot_pseudoSection(DCsurvey, axs, surveyType='dipole-dipole', unitType='volt
Cmid = (Tx[0][0] + Tx[1][0])/2
Pmid = (Rx[0][:,0] + Rx[1][:,0])/2
# Change output for unitType
if unitType == 'volt':
# Compute pant leg of apparent rho
if stype == 'pdp':
leg = data * 2*np.pi * MA * ( MA + MN ) / MN
rho = np.hstack([rho,data])
leg = np.log10(abs(1/leg))
else:
elif stype == 'dpdp':
leg = data * 2*np.pi / ( 1/MA - 1/MB - 1/NB + 1/NA )
# Compute pant leg of apparent rho
if surveyType == 'pole-dipole':
leg = data * 2*np.pi * MA * ( MA + MN ) / MN
elif surveyType == 'dipole-dipole':
leg = data * 2*np.pi / ( 1/MA - 1/MB - 1/NB + 1/NA )
else:
print """unitType must be 'pole-dipole' | 'dipole-dipole' """
break
if unitType == 'appConductivity':
leg = np.log10(abs(1./leg))
rho = np.hstack([rho,leg])
elif unitType == 'appResistivity':
leg = np.log10(abs(leg))
rho = np.hstack([rho,leg])
else:
print """unitType must be 'appResistivity' | 'appConductivity' | 'volt' """
break
midx = np.hstack([midx, ( Cmid + Pmid )/2 ])
midz = np.hstack([midz, -np.abs(Cmid-Pmid)/2 + (Tx[0][2] + Tx[1][2])/2 ])
midz = np.hstack([midz, -np.abs(Cmid-Pmid)/2 + z0 ])
rho = np.hstack([rho,leg])
ax = axs
# Grid points
grid_x, grid_z = np.mgrid[np.min(midx):np.max(midx), np.min(midz):np.max(midz)]
grid_rho = griddata(np.c_[midx,midz], rho.T, (grid_x, grid_z), method='linear')
# Scale the color scheme
if clim == None:
vmin, vmax = rho.min(), rho.max()
else:
vmin, vmax = clim[0], clim[1]
# Plot data
grid_rho = np.ma.masked_where(np.isnan(grid_rho), grid_rho)
plt.imshow(grid_rho.T, extent = (np.min(midx),np.max(midx),np.min(midz),np.max(midz)), origin='lower', alpha=0.8, vmin = np.min(rho), vmax = np.max(rho))
cbar = plt.colorbar(format = '%.2f',fraction=0.04,orientation="horizontal")
cmin,cmax = cbar.get_clim()
ticks = np.linspace(cmin,cmax,3)
cbar.set_ticks(ticks)
# Plot apparent resistivity
plt.scatter(midx,midz,s=50,c=rho.T)
ph = plt.pcolormesh(grid_x[:,0],grid_z[0,:],grid_rho.T, vmin = vmin, vmax = vmax)
plt.gca().tick_params(axis='both', which='major', labelsize=8)
if contour is not None:
plt.contour(grid_x,grid_z,grid_rho,levels = contour,colors = 'r', vmin = vmin, vmax = vmax)
# Add scatter points
axs.scatter(midx,midz,s=10,c=rho.T, vmin = vmin, vmax = vmax)
if colorbar:
if unitType == 'volt':
cbar = plt.colorbar(ph, ax = axs, format="%4.1f",fraction=0.04,orientation="horizontal")
else:
cbar = plt.colorbar(ph, ax = axs, format="$10^{%.1f}$",fraction=0.04,orientation="horizontal")
cmin,cmax = cbar.get_clim()
ticks = np.linspace(cmin,cmax,3)
cbar.set_ticks(ticks)
cbar.ax.tick_params(labelsize=10)
if unitType == 'appConductivity':
cbar.set_label("App.Cond",size=12)
elif unitType == 'appResistivity':
cbar.set_label("App.Res.",size=12)
elif unitType == 'volt':
cbar.set_label("Potential (V)",size=12)
if not axlabel:
axs.set_xticklabels([])
axs.set_yticklabels([])
ax.set_xticklabels([])
ax.set_ylabel('Z')
ax.yaxis.tick_right()
ax.yaxis.set_label_position('right')
plt.gca().set_aspect('equal', adjustable='box')
return ax
return ph
def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
def gen_DCIPsurvey(endl, mesh, stype, a, b, n):
"""
Load in endpoints and survey specifications to generate Tx, Rx location
stations.
Load in endpoints and survey specifications to generate Tx, Rx location
stations.
Assumes flat topo for now...
Assumes flat topo for now...
:param numpy.array endl: input endpoints [[x1, y1] , [x2, y2]]
:param Mesh mesh: SimPEG mesh object
:param string surveyType: 'dipole-dipole' | 'pole-dipole' | 'gradient'
:param float AM_sep: transmitter (A) - receiver (M) seperation
:param float b: receiver dipole seperation
:param float nrx: pole seperation, number of rx dipoles per tx
Input:
:param endl -> input endpoints [x1, y1, z1, x2, y2, z2]
:object mesh -> SimPEG mesh object
:switch stype -> "dpdp" (dipole-dipole) | "pdp" (pole-dipole) | 'gradient'
: param a, n -> pole seperation, number of rx dipoles per tx
:rtype: DC.Survey, Src, Rx
:returns: DC survey, Source
Output:
:param Tx, Rx -> List objects for each tx location
Lines: P1x, P1y, P1z, P2x, P2y, P2z
!! Require clean up to deal with DCsurvey
Created on Wed December 9th, 2015
@author: dominiquef
!! Require clean up to deal with DCsurvey
"""
from SimPEG import np
@@ -340,17 +299,17 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
dl_x = ( endl[1,0] - endl[0,0] ) / dl_len
dl_y = ( endl[1,1] - endl[0,1] ) / dl_len
nstn = np.floor( dl_len / AM_sep )
nstn = np.floor( dl_len / a )
# Compute discrete pole location along line
stn_x = endl[0,0] + np.array(range(int(nstn)))*dl_x*AM_sep
stn_y = endl[0,1] + np.array(range(int(nstn)))*dl_y*AM_sep
stn_x = endl[0,0] + np.array(range(int(nstn)))*dl_x*a
stn_y = endl[0,1] + np.array(range(int(nstn)))*dl_y*a
# Create line of P1 locations
M = np.c_[stn_x, stn_y, np.ones(nstn).T*mesh.vectorNz[-1]]
# Create line of P2 locations
N = np.c_[stn_x+AM_sep*dl_x, stn_y+AM_sep*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
N = np.c_[stn_x+a*dl_x, stn_y+a*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
## Build list of Tx-Rx locations depending on survey type
# Dipole-dipole: Moving tx with [a] spacing -> [AB a MN1 a MN2 ... a MNn]
@@ -360,14 +319,14 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
SrcList = []
if surveyType != 'gradient':
if stype != 'gradient':
for ii in range(0, int(nstn)-1):
if surveyType == 'dipole-dipole':
if stype == 'dpdp':
tx = np.c_[M[ii,:],N[ii,:]]
elif surveyType == 'pole-dipole':
elif stype == 'pdp':
tx = np.c_[M[ii,:],M[ii,:]]
# Rx.append(np.c_[M[ii+1:indx,:],N[ii+1:indx,:]])
@@ -376,33 +335,43 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
AB = xy_2_r(tx[0,1],endl[1,0],tx[1,1],endl[1,1])
# Number of receivers to fit
nstn = np.min([np.floor( (AB - MN_sep) / AM_sep ) , nrx])
nstn = np.min([np.floor( (AB - b) / a ) , n])
# Check if there is enough space, else break the loop
if nstn <= 0:
continue
# Compute discrete pole location along line
stn_x = N[ii,0] + dl_x*MN_sep + np.array(range(int(nstn)))*dl_x*AM_sep
stn_y = N[ii,1] + dl_y*MN_sep + np.array(range(int(nstn)))*dl_y*AM_sep
stn_x = N[ii,0] + dl_x*b + np.array(range(int(nstn)))*dl_x*a
stn_y = N[ii,1] + dl_y*b + np.array(range(int(nstn)))*dl_y*a
# Create receiver poles
# Create line of P1 locations
P1 = np.c_[stn_x, stn_y, np.ones(nstn).T*mesh.vectorNz[-1]]
# Create line of P2 locations
P2 = np.c_[stn_x+AM_sep*dl_x, stn_y+AM_sep*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
P2 = np.c_[stn_x+a*dl_x, stn_y+a*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
Rx.append(np.c_[P1,P2])
rxClass = DC.RxDipole(P1, P2)
Tx.append(tx)
if surveyType == 'dipole-dipole':
if stype == 'dpdp':
srcClass = DC.SrcDipole([rxClass], M[ii,:],N[ii,:])
elif surveyType == 'pole-dipole':
elif stype == 'pdp':
srcClass = DC.SrcDipole([rxClass], M[ii,:],M[ii,:])
SrcList.append(srcClass)
elif surveyType == 'gradient':
#==============================================================================
# elif re.match(stype,'dpdp'):
#
# for ii in range(0, int(nstn)-2):
#
# indx = np.min([ii+n+1,nstn])
# Tx.append(np.c_[M[ii,:],N[ii,:]])
# Rx.append(np.c_[M[ii+2:indx,:],N[ii+2:indx,:]])
#==============================================================================
elif stype == 'gradient':
# Gradient survey only requires Tx at end of line and creates a square
# grid of receivers at in the middle at a pre-set minimum distance
@@ -410,23 +379,23 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
Tx.append(np.c_[M[0,:],N[-1,:]])
# Get the edge limit of survey area
min_x = endl[0,0] + dl_x * MN_sep
min_y = endl[0,1] + dl_y * MN_sep
min_x = endl[0,0] + dl_x * b
min_y = endl[0,1] + dl_y * b
max_x = endl[1,0] - dl_x * MN_sep
max_y = endl[1,1] - dl_y * MN_sep
max_x = endl[1,0] - dl_x * b
max_y = endl[1,1] - dl_y * b
box_l = np.sqrt( (min_x - max_x)**2 + (min_y - max_y)**2 )
box_w = box_l/2.
nstn = np.floor( box_l / AM_sep )
nstn = np.floor( box_l / a )
# Compute discrete pole location along line
stn_x = min_x + np.array(range(int(nstn)))*dl_x*AM_sep
stn_y = min_y + np.array(range(int(nstn)))*dl_y*AM_sep
stn_x = min_x + np.array(range(int(nstn)))*dl_x*a
stn_y = min_y + np.array(range(int(nstn)))*dl_y*a
# Define number of cross lines
nlin = int(np.floor( box_w / AM_sep ))
nlin = int(np.floor( box_w / a ))
lind = range(-nlin,nlin+1)
ngrad = nstn * len(lind)
@@ -435,12 +404,12 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
for ii in range( len(lind) ):
# Move line in perpendicular direction by dipole spacing
lxx = stn_x - lind[ii]*AM_sep*dl_y
lyy = stn_y + lind[ii]*AM_sep*dl_x
lxx = stn_x - lind[ii]*a*dl_y
lyy = stn_y + lind[ii]*a*dl_x
M = np.c_[ lxx, lyy , np.ones(nstn).T*mesh.vectorNz[-1]]
N = np.c_[ lxx+AM_sep*dl_x, lyy+AM_sep*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
N = np.c_[ lxx+a*dl_x, lyy+a*dl_y, np.ones(nstn).T*mesh.vectorNz[-1]]
rx[(ii*nstn):((ii+1)*nstn),:] = np.c_[M,N]
@@ -449,37 +418,37 @@ def gen_DCIPsurvey(endl, mesh, surveyType, AM_sep, MN_sep, nrx):
srcClass = DC.SrcDipole([rxClass], M[0,:], N[-1,:])
SrcList.append(srcClass)
else:
print """surveyType must be either 'pole-dipole', 'dipole-dipole' or 'gradient'. """
print """stype must be either 'pdp', 'dpdp' or 'gradient'. """
survey = DC.SurveyDC(SrcList)
return survey, Tx, Rx
def writeUBC_DCobs(fileName, DCsurvey, dim, surveyType, iptype = 0):
def writeUBC_DCobs(fileName, DCsurvey, dtype, stype):
"""
Write UBC GIF DCIP 2D or 3D observation file
:param string fileName: including path where the file is written out
:param Survey DCsurvey: DC survey class object
:param string dim: either '2D' | '3D'
:param string surveyType: either 'SURFACE' | 'GENERAL'
:rtype: file
:return: UBC2D-Data file
"""
Input:
:string fileName -> including path where the file is written out
:DCsurvey -> DC survey class object
:string dtype -> either '2D' | '3D'
:string stype -> either 'SURFACE' | 'GENERAL'
Output:
:param UBC2D-Data file
:return
Last edit: February 16th, 2016
@author: dominiquef
"""
from SimPEG import mkvc
assert (dim=='2D') | (dim=='3D'), "Data must be either '2D' | '3D'"
assert (surveyType=='SURFACE') | (surveyType=='GENERAL') | (surveyType=='SIMPLE'), "Data must be either 'SURFACE' | 'GENERAL' | 'SIMPLE'"
assert (dtype=='2D') | (dtype=='3D'), "Data must be either '2D' | '3D'"
assert (stype=='SURFACE') | (stype=='GENERAL') | (stype=='SIMPLE'), "Data must be either 'SURFACE' | 'GENERAL' | 'SIMPLE'"
fid = open(fileName,'w')
fid.write('! ' + surveyType + ' FORMAT\n')
if iptype!=0:
fid.write('IPTYPE=%i\n'%iptype)
else:
fid.write('! ' + stype + ' FORMAT\n')
fid.write('! ' + stype + ' FORMAT\n')
count = 0
@@ -494,10 +463,10 @@ def writeUBC_DCobs(fileName, DCsurvey, dim, surveyType, iptype = 0):
M = rx[0]
N = rx[1]
# Adapt source-receiver location for dim and surveyType
if dim=='2D':
# Adapt source-receiver location for dtype and stype
if dtype=='2D':
if surveyType == 'SIMPLE':
if stype == 'SIMPLE':
#fid.writelines("%e " % ii for ii in mkvc(tx[0,:]))
A = np.repeat(tx[0,0],M.shape[0],axis=0)
@@ -510,60 +479,58 @@ def writeUBC_DCobs(fileName, DCsurvey, dim, surveyType, iptype = 0):
else:
if surveyType == 'SURFACE':
if stype == 'SURFACE':
fid.writelines("%f " % ii for ii in mkvc(tx[0,:]))
fid.writelines("%e " % ii for ii in mkvc(tx[0,:]))
M = M[:,0]
N = N[:,0]
if surveyType == 'GENERAL':
# Flip sign for z-elevation to depth
tx[2::2,:] = -tx[2::2,:]
if stype == 'GENERAL':
fid.writelines("%e " % ii for ii in mkvc(tx[::2,:]))
M = M[:,0::2]
N = N[:,0::2]
# Flip sign for z-elevation to depth
M[:,1::2] = -M[:,1::2]
N[:,1::2] = -N[:,1::2]
fid.write('%i\n'% nD)
np.savetxt(fid, np.c_[ M, N , DCsurvey.dobs[count:count+nD], DCsurvey.std[count:count+nD] ], fmt='%f',delimiter=' ',newline='\n')
np.savetxt(fid, np.c_[ M, N , DCsurvey.dobs[count:count+nD], DCsurvey.std[count:count+nD] ], fmt='%e',delimiter=' ',newline='\n')
if dim=='3D':
if dtype=='3D':
if surveyType == 'SURFACE':
if stype == 'SURFACE':
fid.writelines("%e " % ii for ii in mkvc(tx[0:2,:]))
M = M[:,0:2]
N = N[:,0:2]
if surveyType == 'GENERAL':
if stype == 'GENERAL':
fid.writelines("%e " % ii for ii in mkvc(tx[0:3,:]))
fid.writelines("%e " % ii for ii in mkvc(tx))
fid.write('%i\n'% nD)
np.savetxt(fid, np.c_[ M, N , DCsurvey.dobs[count:count+nD], DCsurvey.std[count:count+nD] ], fmt='%e',delimiter=' ',newline='\n')
fid.write('\n')
count += nD
fid.close()
def convertObs_DC3D_to_2D(DCsurvey, lineID, flag='local'):
def convertObs_DC3D_to_2D(DCsurvey,lineID):
"""
Read DC survey and projects the coordinate system
according to the flag = 'Xloc' | 'Yloc' | 'local' (default)
In the 'local' system, station coordinates are referenced
to distance from the first srcLoc[0].loc[0]
Read DC survey and data and change
coordinate system to distance along line assuming
all data is acquired along line.
First transmitter pole is assumed to be at the origin
The Z value is preserved, but Y coordinates zeroed.
Assumes flat topo for now...
:param DC.Survey survey3D: 3D simpeg DC survey
:rtype: DC.Survey
:return: survey2D
Input:
:param Tx, Rx
Output:
:figure Tx2d, Rx2d
Edited Feb 17th, 2016
@author: dominiquef
"""
from SimPEG import np
@@ -603,39 +570,25 @@ def convertObs_DC3D_to_2D(DCsurvey, lineID, flag='local'):
Rx = DCsurvey.srcList[indx[ii]].rxList[0].locs
nrx = Rx[0].shape[0]
if flag == 'local':
# Find A electrode along line
vec, r = r_unit(x0,Tx[ii][0,0:2])
A = stn_id(vecTx,vec,r)
# Find A electrode along line
vec, r = r_unit(x0,Tx[ii][0,0:2])
A = stn_id(vecTx,vec,r)
# Find B electrode along line
vec, r = r_unit(x0,Tx[ii][1,0:2])
B = stn_id(vecTx,vec,r)
# Find B electrode along line
vec, r = r_unit(x0,Tx[ii][1,0:2])
B = stn_id(vecTx,vec,r)
M = np.zeros(nrx)
N = np.zeros(nrx)
for kk in range(nrx):
M = np.zeros(nrx)
N = np.zeros(nrx)
for kk in range(nrx):
# Find all M electrodes along line
vec, r = r_unit(x0,Rx[0][kk,0:2])
M[kk] = stn_id(vecTx,vec,r)
# Find all M electrodes along line
vec, r = r_unit(x0,Rx[0][kk,0:2])
M[kk] = stn_id(vecTx,vec,r)
# Find all N electrodes along line
vec, r = r_unit(x0,Rx[1][kk,0:2])
N[kk] = stn_id(vecTx,vec,r)
elif flag == 'Yloc':
""" Flip the XY axis locs"""
A = Tx[ii][0,1]
B = Tx[ii][1,1]
M = Rx[0][:,1]
N = Rx[1][:,1]
elif flag == 'Xloc':
""" Copy the rx-tx locs"""
A = Tx[ii][0,0]
B = Tx[ii][1,0]
M = Rx[0][:,0]
N = Rx[1][:,0]
# Find all N electrodes along line
vec, r = r_unit(x0,Rx[1][kk,0:2])
N[kk] = stn_id(vecTx,vec,r)
Rx = DC.RxDipole(np.c_[M,np.zeros(nrx),Rx[0][:,2]],np.c_[N,np.zeros(nrx),Rx[1][:,2]])
@@ -649,53 +602,50 @@ def convertObs_DC3D_to_2D(DCsurvey, lineID, flag='local'):
return DCsurvey2D
def readUBC_DC3Dobs(fileName, rtype = 'DC'):
def readUBC_DC3Dobs(fileName):
"""
Read UBC GIF IP 3D observation file and generate survey
Read UBC GIF DCIP 3D observation file and generate arrays for tx-rx location
:param string fileName:, path to the UBC GIF 3D obs file
:rtype: Survey
:return: DCIPsurvey
Input:
:param fileName, path to the UBC GIF 3D obs file
Output:
:param rx, tx, d, wd
:return
Created on Mon December 7th, 2015
@author: dominiquef
"""
zflag = True # Flag for z value provided
# Load file
if rtype == 'IP':
obsfile = np.genfromtxt(fileName,delimiter=' \n',dtype=np.str,comments='IPTYPE')
elif rtype == 'DC':
obsfile = np.genfromtxt(fileName,delimiter=' \n',dtype=np.str,comments='!')
else:
print "rtype must be 'DC'(default) | 'IP'"
obsfile = np.genfromtxt(fileName,delimiter=' \n',dtype=np.str,comments='!')
# Pre-allocate
srcLists = []
Rx = []
d = []
wd = []
zflag = True # Flag for z value provided
# Countdown for number of obs/tx
count = 0
for ii in range(obsfile.shape[0]):
# Skip if blank line
if not obsfile[ii]:
continue
# First line or end of a transmitter block, read transmitter info
# First line is transmitter with number of receivers
if count==0:
# Read the line
temp = (np.fromstring(obsfile[ii], dtype=float, sep=' ').T)
temp = (np.fromstring(obsfile[ii], dtype=float,sep=' ').T)
count = int(temp[-1])
# Check if z value is provided, if False -> nan
if len(temp)==5:
tx = np.r_[temp[0:2],np.nan,temp[2:4],np.nan]
zflag = False # Pass on the flag to the receiver loc
tx = np.r_[temp[0:2],np.nan,temp[0:2],np.nan]
zflag = False
else:
tx = temp[:-1]
@@ -703,16 +653,8 @@ def readUBC_DC3Dobs(fileName, rtype = 'DC'):
rx = []
continue
temp = np.fromstring(obsfile[ii], dtype=float,sep=' ') # Get the string
temp = np.fromstring(obsfile[ii], dtype=float,sep=' ')
# Filter out negative IP
# if temp[-2] < 0:
# count = count -1
# print "Negative!"
#
# else:
# If the Z-location is provided, otherwise put nan
if zflag:
rx.append(temp[:-2])
@@ -722,7 +664,7 @@ def readUBC_DC3Dobs(fileName, rtype = 'DC'):
wd.append(temp[-1])
else:
rx.append(np.r_[temp[0:2],np.nan,temp[2:4],np.nan] )
rx.append(np.r_[temp[0:2],np.nan,temp[0:2],np.nan] )
# Check if there is data with the location
if len(temp)==6:
d.append(temp[-2])
@@ -730,7 +672,7 @@ def readUBC_DC3Dobs(fileName, rtype = 'DC'):
count = count -1
# Reach the end of transmitter block, append the src, rx and continue
# Reach the end of transmitter block
if count == 0:
rx = np.asarray(rx)
Rx = DC.RxDipole(rx[:,:3],rx[:,3:])
@@ -746,12 +688,19 @@ def readUBC_DC3Dobs(fileName, rtype = 'DC'):
def readUBC_DC2Dobs(fileName):
"""
------- NEEDS TO BE UPDATED ------
Read UBC GIF 2D observation file and generate arrays for tx-rx location
:param string fileName: path to the UBC GIF 2D model file
:rtype: (DC.Src, DC.Rx, ??, ??)
:return: source_locs, rx_locs, ??, ??
Input:
:param fileName, path to the UBC GIF 2D model file
Output:
:param rx, tx
:return
Created on Thu Nov 12 13:14:10 2015
@author: dominiquef
"""
from SimPEG import np
@@ -786,78 +735,16 @@ def readUBC_DC2Dobs(fileName):
return tx, rx, d, wd
def readUBC_DC2Dpre(fileName):
"""
Read UBC GIF DCIP 2D observation file and generate arrays for tx-rx location
Input:
:param string fileName: path to the UBC GIF 3D obs file
:rtype: DC.Survey
:return: DCsurvey
Created on Mon March 9th, 2016 << Doug's 70th Birthday !! >>
@author: dominiquef
"""
# Load file
obsfile = np.genfromtxt(fileName,delimiter=' \n',dtype=np.str,comments='!')
# Pre-allocate
srcLists = []
Rx = []
d = []
zflag = True # Flag for z value provided
for ii in range(obsfile.shape[0]):
if not obsfile[ii]:
continue
# First line is transmitter with number of receivers
temp = (np.fromstring(obsfile[ii], dtype=float,sep=' ').T)
# Check if z value is provided, if False -> nan
if len(temp)==5:
tx = np.r_[temp[0],np.nan,np.nan,temp[1],np.nan,np.nan]
zflag = False
else:
tx = np.r_[temp[0],np.nan,temp[1],temp[2],np.nan,temp[3]]
if zflag:
rx = np.c_[temp[4],np.nan,temp[5],temp[6],np.nan,temp[7]]
else:
rx = np.c_[temp[2],np.nan,np.nan,temp[3],np.nan,np.nan]
# Check if there is data with the location
d.append(temp[-1])
Rx = DC.RxDipole(rx[:,:3],rx[:,3:])
srcLists.append( DC.SrcDipole( [Rx], tx[:3],tx[3:]) )
# Create survey class
survey = DC.SurveyDC(srcLists)
survey.dobs = np.asarray(d)
return {'DCsurvey':survey}
def readUBC_DC2DMesh(fileName):
"""
Read UBC GIF 2DTensor mesh and generate 2D Tensor mesh in simpeg
:param string fileName: path to the UBC GIF mesh file
:rtype: Mesh.TensorMesh
:return: SimPEG TensorMesh 2D object
Input:
:param fileName, path to the UBC GIF mesh file
Output:
:param SimPEG TensorMesh 2D object
:return
Created on Thu Nov 12 13:14:10 2015
@@ -923,9 +810,12 @@ def xy_2_lineID(DCsurvey):
they were collected. May need to generalize for random
point locations, but will be more expensive
:param numpy.array DCdict: Vectors of station location
:rtype: numpy.array
:return: LineID Vector of integers
Input:
:param DCdict Vectors of station location
Output:
:param LineID Vector of integers
:return
Created on Thu Feb 11, 2015
@@ -1038,6 +928,7 @@ def getSrc_locs(DCsurvey):
srcMat = np.zeros((DCsurvey.nSrc,2,3))
for ii in range(DCsurvey.nSrc):
print np.asarray(DCsurvey.srcList[ii].loc).shape
srcMat[ii,:,:] = np.asarray(DCsurvey.srcList[ii].loc)
return srcMat
+43 -197
View File
@@ -144,18 +144,12 @@ class BetaSchedule(InversionDirective):
if self.debug: print 'BetaSchedule is cooling Beta. Iteration: %d' % self.opt.iter
self.invProb.beta /= self.coolingFactor
class TargetMisfit(InversionDirective):
chifact = 1.
phi_d_star = None
@property
def target(self):
if getattr(self, '_target', None) is None:
if self.phi_d_star is None:
self.phi_d_star = 0.5 * self.survey.nD
self._target = self.chifact * self.phi_d_star # the factor of 0.5 is because we do phid = 0.5*|| dpred - dobs||^2
self._target = self.survey.nD*0.5
return self._target
@target.setter
def target(self, val):
@@ -222,13 +216,13 @@ class SaveOutputDictEveryIteration(_SaveEveryIteration):
# Save the data.
ms = self.reg.Ws * ( self.reg.mapping * (self.invProb.curModel - self.reg.mref) )
phi_ms = 0.5*ms.dot(ms)
if self.reg.mrefInSmooth == True:
if self.reg.smoothModel == True:
mref = self.reg.mref
else:
mref = 0
mx = self.reg.Wx * ( self.reg.mapping * (self.invProb.curModel - mref) )
phi_mx = 0.5 * mx.dot(mx)
if self.prob.mesh.dim >= 2:
if self.prob.mesh.dim==2:
my = self.reg.Wy * ( self.reg.mapping * (self.invProb.curModel - mref) )
phi_my = 0.5 * my.dot(my)
else:
@@ -243,197 +237,49 @@ class SaveOutputDictEveryIteration(_SaveEveryIteration):
# Save the file as a npz
np.savez('{:03d}-{:s}'.format(self.opt.iter,self.fileName), iter=self.opt.iter, beta=self.invProb.beta, phi_d=self.invProb.phi_d, phi_m=self.invProb.phi_m, phi_ms=phi_ms, phi_mx=phi_mx, phi_my=phi_my, phi_mz=phi_mz,f=self.opt.f, m=self.invProb.curModel,dpred=self.invProb.dpred)
class SaveOutputDictEveryIteration(_SaveEveryIteration):
"""SaveOutputDictEveryIteration
A directive that saves some relevant information from the inversion run to a numpy .npz dictionary file (see numpy.savez function for further info).
"""
def initialize(self):
print "SimPEG.SaveOutputDictEveryIteration will save your inversion progress as dictionary: '%s-###.npz'"%self.fileName
def endIter(self):
# Save the data.
ms = self.reg.Ws * ( self.reg.mapping * (self.invProb.curModel - self.reg.mref) )
phi_ms = 0.5*ms.dot(ms)
if self.reg.smoothModel == True:
mref = self.reg.mref
else:
mref = 0
mx = self.reg.Wx * ( self.reg.mapping * (self.invProb.curModel - mref) )
phi_mx = 0.5 * mx.dot(mx)
if self.prob.mesh.dim==2:
my = self.reg.Wy * ( self.reg.mapping * (self.invProb.curModel - mref) )
phi_my = 0.5 * my.dot(my)
else:
phi_my = 'NaN'
if self.prob.mesh.dim==3 and 'CYL' not in self.prob.mesh._meshType:
mz = self.reg.Wz * ( self.reg.mapping * (self.invProb.curModel - mref) )
phi_mz = 0.5 * mz.dot(mz)
else:
phi_mz = 'NaN'
# Save the file as a npz
np.savez('{:s}-{:03d}'.format(self.fileName,self.opt.iter), iter=self.opt.iter, beta=self.invProb.beta, phi_d=self.invProb.phi_d, phi_m=self.invProb.phi_m, phi_ms=phi_ms, phi_mx=phi_mx, phi_my=phi_my, phi_mz=phi_mz,f=self.opt.f, m=self.invProb.curModel,dpred=self.invProb.dpred)
# class UpdateReferenceModel(Parameter):
# mref0 = None
# def nextIter(self):
# mref = getattr(self, 'm_prev', None)
# if mref is None:
# if self.debug: print 'UpdateReferenceModel is using mref0'
# mref = self.mref0
# self.m_prev = self.invProb.m_current
# return mref
class Update_IRLS(InversionDirective):
eps_min = None
eps_p = None
eps_q = None
norms = [2.,2.,2.,2.]
factor = None
gamma = None
phi_m_last = None
phi_d_last = None
f_old = None
f_min_change = 1e-2
beta_tol = 5e-2
# Solving parameter for IRLS (mode:2)
IRLSiter = 0
minGNiter = 5
maxIRLSiter = 10
iterStart = 0
# Beta schedule
coolingFactor = 2.
coolingRate = 1
mode = 1
@property
def target(self):
if getattr(self, '_target', None) is None:
self._target = self.survey.nD*0.5
return self._target
@target.setter
def target(self, val):
self._target = val
def initialize(self):
if self.mode == 1:
self.reg.norms = [2., 2., 2., 2.]
def endIter(self):
# After reaching target misfit with l2-norm, switch to IRLS (mode:2)
if self.invProb.phi_d < self.target and self.mode == 1:
print "Convergence with smooth l2-norm regularization: Start IRLS steps..."
self.mode = 2
print self.eps_p, self.eps_q, self.norms
self.reg.eps_p = self.eps_p
self.reg.eps_q = self.eps_q
self.reg.norms = self.norms
self.coolingFactor = 1.
self.coolingRate = 1
self.iterStart = self.opt.iter
self.phi_d_last = self.invProb.phi_d
self.phi_m_last = self.invProb.phi_m_last
self.reg.l2model = self.invProb.curModel
self.reg.curModel = self.invProb.curModel
if getattr(self, 'f_old', None) is None:
self.f_old = self.reg.eval(self.invProb.curModel)#self.invProb.evalFunction(self.invProb.curModel, return_g=False, return_H=False)
# Beta Schedule
if self.opt.iter > 0 and self.opt.iter % self.coolingRate == 0:
if self.debug: print 'BetaSchedule is cooling Beta. Iteration: %d' % self.opt.iter
self.invProb.beta /= self.coolingFactor
# Only update after GN iterations
if (self.opt.iter-self.iterStart) % self.minGNiter == 0 and self.mode==2:
self.IRLSiter += 1
phim_new = self.reg.eval(self.invProb.curModel)
self.f_change = np.abs(self.f_old - phim_new) / self.f_old
print "Regularization decrease: %6.3e" % (self.f_change)
# Check for maximum number of IRLS cycles
if self.IRLSiter == self.maxIRLSiter:
print "Reach maximum number of IRLS cycles: %i" % self.maxIRLSiter
self.opt.stopNextIteration = True
return
# Check if the function has changed enough
if self.f_change < self.f_min_change and self.IRLSiter > 1:
print "Minimum decrease in regularization. End of IRLS"
self.opt.stopNextIteration = True
return
else:
self.f_old = phim_new
# Cool the threshold parameter if required
if getattr(self, 'factor', None) is not None:
eps = self.reg.eps / self.factor
if getattr(self, 'eps_min', None) is not None:
self.reg.eps = np.max([self.eps_min,eps])
else:
self.reg.eps = eps
# Get phi_m at the end of current iteration
self.phi_m_last = self.invProb.phi_m_last
# Reset the regularization matrices so that it is
# recalculated for current model
self.reg._Wsmall = None
self.reg._Wx = None
self.reg._Wy = None
self.reg._Wz = None
# Update the model used for the IRLS weights
self.reg.curModel = self.invProb.curModel
# Temporarely set gamma to 1. to get raw phi_m
self.reg.gamma = 1.
# Compute new model objective function value
phim_new = self.reg.eval(self.invProb.curModel)
# Update gamma to scale the regularization between IRLS iterations
self.reg.gamma = self.phi_m_last / phim_new
# Reset the regularization matrices again for new gamma
self.reg._Wsmall = None
self.reg._Wx = None
self.reg._Wy = None
self.reg._Wz = None
# Check if misfit is within the tolerance, otherwise scale beta
val = self.invProb.phi_d / (self.survey.nD*0.5)
if np.abs(1.-val) > self.beta_tol:
self.invProb.beta = self.invProb.beta * self.survey.nD*0.5 / self.invProb.phi_d
class Update_lin_PreCond(InversionDirective):
"""
Create a Jacobi preconditioner for the linear problem
"""
onlyOnStart=False
def initialize(self):
if getattr(self.opt, 'approxHinv', None) is None:
# Update the pre-conditioner
diagA = np.sum(self.prob.G**2.,axis=0) + self.invProb.beta*(self.reg.W.T*self.reg.W).diagonal() #* (self.reg.mapping * np.ones(self.reg.curModel.size))**2.
PC = Utils.sdiag((self.prob.mapping.deriv(None).T *diagA)**-1.)
self.opt.approxHinv = PC
def endIter(self):
# Cool the threshold parameter
if self.onlyOnStart==True:
return
if getattr(self.opt, 'approxHinv', None) is not None:
# Update the pre-conditioner
diagA = np.sum(self.prob.G**2.,axis=0) + self.invProb.beta*(self.reg.W.T*self.reg.W).diagonal() #* (self.reg.mapping * np.ones(self.reg.curModel.size))**2.
PC = Utils.sdiag((self.prob.mapping.deriv(None).T *diagA)**-1.)
self.opt.approxHinv = PC
class Update_Wj(InversionDirective):
"""
Create approx-sensitivity base weighting using the probing method
"""
k = None # Number of probing cycles
itr = None # Iteration number to update Wj, or always update if None
def endIter(self):
if self.itr is None or self.itr == self.opt.iter:
m = self.invProb.curModel
if self.k is None:
self.k = int(self.survey.nD/10)
def JtJv(v):
Jv = self.prob.Jvec(m, v)
return self.prob.Jtvec(m,Jv)
JtJdiag = Utils.diagEst(JtJv,len(m),k=self.k)
JtJdiag = JtJdiag / max(JtJdiag)
self.reg.wght = JtJdiag
-118
View File
@@ -1,118 +0,0 @@
import numpy as np
from scipy.constants import mu_0, pi
from scipy import special
def DCAnalyticHalf(txloc, rxlocs, sigma, earth_type="wholespace"):
"""
Analytic solution for electric potential from a postive pole
:param array txloc: a xyz location of A (+) electrode (np.r_[xa, ya, za])
:param list rxlocs: xyz locations of M (+) and N (-) electrodes [M, N]
e.g.
rxlocs = [M, N]
M: xyz locations of M (+) electrode (np.c_[xmlocs, ymlocs, zmlocs])
N: xyz locations of N (-) electrode (np.c_[xnlocs, ynlocs, znlocs])
:param float or complex sigma: values of conductivity
:param string earth_type: values of conductivity ("wholsespace" or "halfspace")
"""
M = rxlocs[0]
N = rxlocs[1]
rM = np.sqrt( (M[:,0]-txloc[0])**2 + (M[:,1]-txloc[1])**2 + (M[:,2]-txloc[1])**2 )
rN = np.sqrt( (N[:,0]-txloc[0])**2 + (N[:,1]-txloc[1])**2 + (N[:,2]-txloc[1])**2 )
phiM = 1./(4*np.pi*rM*sigma)
phiN = 1./(4*np.pi*rN*sigma)
phi = phiM - phiN
if earth_type == "halfspace":
phi *= 2
return phi
deg2rad = lambda deg: deg/180.*np.pi
rad2deg = lambda rad: rad*180./np.pi
def DCAnalyticSphere(txloc, rxloc, xc, radius, sigma, sigma1, \
field_type = "secondary", order=12, halfspace=False):
# def DCSpherePointCurrent(txloc, rxloc, xc, radius, rho, rho1, \
# field_type = "secondary", order=12):
"""
Parameters:
:param array txloc: A (+) current electrode location (x,y,z)
:param array xc: x center of depressed sphere
:param array rxloc: M(+) electrode locations / (Nx3 array, # of electrodes)
:param float radius: radius (float): radius of the sphere (m)
:param float rho: resistivity of the background (ohm-m)
:param float rho1: resistivity of the sphere
:param string field_type: : "secondary", "total", "primary"
(default="secondary")
"secondary": secondary potential only due to sphere
"primary": primary potential from the point source
"total": "secondary"+"primary"
:param float order: maximum order of Legendre polynomial (default=12)
Written by Seogi Kang (skang@eos.ubc.ca)
Ph.D. Candidate of University of British Columbia, Canada
"""
Pleg = []
# Compute Legendre Polynomial
for i in range(order):
Pleg.append(special.legendre(i, monic=0))
rho = 1./sigma
rho1 = 1./sigma1
# Center of the sphere should be aligned in txloc in y-direction
yc = txloc[1]
xyz = np.c_[rxloc[:,0]-xc, rxloc[:,1]-yc, rxloc[:,2]]
r = np.sqrt( (xyz**2).sum(axis=1) )
x0 = abs(txloc[0]-xc)
costheta = xyz[:,0]/r * (txloc[0]-xc)/x0
phi = np.zeros_like(r)
R = (r**2+x0**2.-2.*r*x0*costheta)**0.5
# primary potential in a whole space
prim = rho*1./(4*np.pi*R)
if field_type =="primary":
return prim
sphind = r < radius
out = np.zeros_like(r)
for n in range(order):
An, Bn = AnBnfun(n, radius, x0, rho, rho1)
dumout = An*r[~sphind]**(-n-1.)*Pleg[n](costheta[~sphind])
out[~sphind] += dumout
dumin = Bn*r[sphind]**(n)*Pleg[n](costheta[sphind])
out[sphind] += dumin
out[~sphind] += prim[~sphind]
if halfspace:
scale = 2
else:
scale = 1
if field_type == "secondary":
return scale*(out-prim)
elif field_type == "total":
return scale*out
def AnBnfun(n, radius, x0, rho, rho1, I=1.):
const = I*rho/(4*np.pi)
bunmo = n*rho + (n+1)*rho1
An = const * radius**(2*n+1) / x0 ** (n+1.) * n * \
(rho1-rho) / bunmo
Bn = const * 1. / x0 ** (n+1.) * (2*n+1) * (rho1) / bunmo
return An, Bn
-1
View File
@@ -1,4 +1,3 @@
from TDEM import hzAnalyticDipoleT
from FDEM import hzAnalyticDipoleF
from FDEMcasing import *
from DC import DCAnalyticHalf, DCAnalyticSphere
+12 -34
View File
@@ -1,14 +1,13 @@
from SimPEG import Survey, Problem, Utils, Models, Maps, PropMaps, np, sp, Solver as SimpegSolver
from scipy.constants import mu_0
class EMPropMap(Maps.PropMap):
"""
Property Map for EM Problems. The electrical conductivity (\\(\\sigma\\)) is the default inversion property, and the default value of the magnetic permeability is that of free space (\\(\\mu = 4\\pi\\times 10^{-7} \\) H/m)
"""
sigma = Maps.Property("Electrical Conductivity", defaultInvProp = True, propertyLink=('rho',Maps.ReciprocalMap))
mu = Maps.Property("Inverse Magnetic Permeability", defaultVal = mu_0, propertyLink=('mui',Maps.ReciprocalMap))
mu = Maps.Property("Magnetic Permeability", defaultVal = mu_0, propertyLink=('mui',Maps.ReciprocalMap))
rho = Maps.Property("Electrical Resistivity", propertyLink=('sigma', Maps.ReciprocalMap))
mui = Maps.Property("Inverse Magnetic Permeability", defaultVal = 1./mu_0, propertyLink=('mu', Maps.ReciprocalMap))
@@ -62,15 +61,6 @@ class BaseEMProblem(Problem.BaseProblem):
self._Me = self.mesh.getEdgeInnerProduct()
return self._Me
@property
def MeI(self):
"""
Edge inner product matrix
"""
if getattr(self, '_MeI', None) is None:
self._MeI = self.mesh.getEdgeInnerProduct(invMat=True)
return self._MeI
@property
def Mf(self):
"""
@@ -80,20 +70,6 @@ class BaseEMProblem(Problem.BaseProblem):
self._Mf = self.mesh.getFaceInnerProduct()
return self._Mf
@property
def MfI(self):
"""
Face inner product matrix
"""
if getattr(self, '_MfI', None) is None:
self._MfI = self.mesh.getFaceInnerProduct(invMat=True)
return self._MfI
@property
def Vol(self):
if getattr(self, '_Vol', None) is None:
self._Vol = Utils.sdiag(self.mesh.vol)
return self._Vol
# ----- Magnetic Permeability ----- #
@property
@@ -151,6 +127,7 @@ class BaseEMProblem(Problem.BaseProblem):
"""
return self.mesh.getEdgeInnerProductDeriv(self.curModel.sigma)(u) * self.curModel.sigmaDeriv
@property
def MeSigmaI(self):
"""
@@ -169,7 +146,10 @@ class BaseEMProblem(Problem.BaseProblem):
dMeSigmaI_dI = -self.MeSigmaI**2
dMe_dsig = self.mesh.getEdgeInnerProductDeriv(self.curModel.sigma)(u)
return dMeSigmaI_dI * ( dMe_dsig * self.curModel.sigmaDeriv )
dsig_dm = self.curModel.sigmaDeriv
return dMeSigmaI_dI * ( dMe_dsig * ( dsig_dm))
# return self.mesh.getEdgeInnerProductDeriv(self.curModel.sigma, invMat=True)(u)
@property
def MfRho(self):
@@ -185,7 +165,8 @@ class BaseEMProblem(Problem.BaseProblem):
"""
Derivative of :code:`MfRho` with respect to the model.
"""
return self.mesh.getFaceInnerProductDeriv(self.curModel.rho)(u) * self.curModel.rhoDeriv
return self.mesh.getFaceInnerProductDeriv(self.curModel.rho)(u) * (-Utils.sdiag(self.curModel.rho**2) * self.curModel.sigmaDeriv)
# self.curModel.rhoDeriv
@property
def MfRhoI(self):
@@ -202,10 +183,7 @@ class BaseEMProblem(Problem.BaseProblem):
"""
Derivative of :code:`MfRhoI` with respect to the model.
"""
dMfRhoI_dI = -self.MfRhoI**2
dMf_drho = self.mesh.getFaceInnerProductDeriv(self.curModel.rho)(u)
return dMfRhoI_dI * ( dMf_drho * self.curModel.rhoDeriv )
return self.mesh.getFaceInnerProductDeriv(self.curModel.rho, invMat=True)(u) * self.curModel.rhoDeriv
class BaseEMSurvey(Survey.BaseSurvey):
@@ -214,7 +192,7 @@ class BaseEMSurvey(Survey.BaseSurvey):
self.srcList = srcList
Survey.BaseSurvey.__init__(self, **kwargs)
def eval(self, f):
def eval(self, u):
"""
Project fields to receiver locations
:param Fields u: fields object
@@ -224,8 +202,8 @@ class BaseEMSurvey(Survey.BaseSurvey):
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.eval(src, self.mesh, f)
data[src, rx] = rx.eval(src, self.mesh, u)
return data
def evalDeriv(self, f):
def evalDeriv(self, u):
raise Exception('Use Receivers to project fields deriv.')
@@ -1,36 +1,36 @@
from SimPEG import Problem, Utils, np, sp, Solver as SimpegSolver
from scipy.constants import mu_0
from SurveyFDEM import Survey as SurveyFDEM
from FieldsFDEM import Fields, Fields3D_e, Fields3D_b, Fields3D_h, Fields3D_j
from FieldsFDEM import Fields, Fields_e, Fields_b, Fields_h, Fields_j
from SimPEG.EM.Base import BaseEMProblem
from SimPEG.EM.Utils import omega
class BaseFDEMProblem(BaseEMProblem):
"""
We start by looking at Maxwell's equations in the electric
field \\\(\\\mathbf{e}\\\) and the magnetic flux
density \\\(\\\mathbf{b}\\\)
We start by looking at Maxwell's equations in the electric
field \\\(\\\mathbf{e}\\\) and the magnetic flux
density \\\(\\\mathbf{b}\\\)
.. math ::
.. math ::
\mathbf{C} \mathbf{e} + i \omega \mathbf{b} = \mathbf{s_m} \\\\
{\mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} - \mathbf{M_{\sigma}^e} \mathbf{e} = \mathbf{s_e}}
\mathbf{C} \mathbf{e} + i \omega \mathbf{b} = \mathbf{s_m} \\\\
{\mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} - \mathbf{M_{\sigma}^e} \mathbf{e} = \mathbf{s_e}}
if using the E-B formulation (:code:`Problem3D_e`
or :code:`Problem3D_b`). Note that in this case, :math:`\mathbf{s_e}` is an integrated quantity.
if using the E-B formulation (:code:`Problem_e`
or :code:`Problem_b`). Note that in this case, :math:`\mathbf{s_e}` is an integrated quantity.
If we write Maxwell's equations in terms of
\\\(\\\mathbf{h}\\\) and current density \\\(\\\mathbf{j}\\\)
If we write Maxwell's equations in terms of
\\\(\\\mathbf{h}\\\) and current density \\\(\\\mathbf{j}\\\)
.. math ::
.. math ::
\mathbf{C}^{\\top} \mathbf{M_{\\rho}^f} \mathbf{j} + i \omega \mathbf{M_{\mu}^e} \mathbf{h} = \mathbf{s_m} \\\\
\mathbf{C} \mathbf{h} - \mathbf{j} = \mathbf{s_e}
\mathbf{C}^{\\top} \mathbf{M_{\\rho}^f} \mathbf{j} + i \omega \mathbf{M_{\mu}^e} \mathbf{h} = \mathbf{s_m} \\\\
\mathbf{C} \mathbf{h} - \mathbf{j} = \mathbf{s_e}
if using the H-J formulation (:code:`Problem3D_j` or :code:`Problem3D_h`). Note that here, :math:`\mathbf{s_m}` is an integrated quantity.
if using the H-J formulation (:code:`Problem_j` or :code:`Problem_h`). Note that here, :math:`\mathbf{s_m}` is an integrated quantity.
The problem performs the elimination so that we are solving the system for \\\(\\\mathbf{e},\\\mathbf{b},\\\mathbf{j} \\\) or \\\(\\\mathbf{h}\\\)
The problem performs the elimination so that we are solving the system for \\\(\\\mathbf{e},\\\mathbf{b},\\\mathbf{j} \\\) or \\\(\\\mathbf{h}\\\)
"""
surveyPair = SurveyFDEM
@@ -87,7 +87,7 @@ class BaseFDEMProblem(BaseEMProblem):
du_dm_v = Ainv * ( - dA_dm_v + dRHS_dm_v )
for rx in src.rxList:
df_dmFun = getattr(f, '_{0}Deriv'.format(rx.projField), None)
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v = df_dmFun(src, du_dm_v, v, adjoint=False)
Jv[src, rx] = rx.evalDeriv(src, self.mesh, f, df_dm_v)
Ainv.clean()
@@ -125,7 +125,7 @@ class BaseFDEMProblem(BaseEMProblem):
for rx in src.rxList:
PTv = rx.evalDeriv(src, self.mesh, f, v[src, rx], adjoint=True) # wrt f, need possibility wrt m
df_duTFun = getattr(f, '_{0}Deriv'.format(rx.projField), None)
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_duT, df_dmT = df_duTFun(src, None, PTv, adjoint=True)
ATinvdf_duT = ATinv * df_duT
@@ -137,9 +137,10 @@ class BaseFDEMProblem(BaseEMProblem):
df_dmT = df_dmT + du_dmT
# TODO: this should be taken care of by the reciever?
if rx.component is 'real':
real_or_imag = rx.projComp
if real_or_imag is 'real':
Jtv += np.array(df_dmT, dtype=complex).real
elif rx.component is 'imag':
elif real_or_imag is 'imag':
Jtv += - np.array(df_dmT, dtype=complex).real
else:
raise Exception('Must be real or imag')
@@ -166,7 +167,6 @@ class BaseFDEMProblem(BaseEMProblem):
for i, src in enumerate(Srcs):
smi, sei = src.eval(self)
#Why are you adding?
s_m[:,i] = s_m[:,i] + smi
s_e[:,i] = s_e[:,i] + sei
@@ -177,7 +177,7 @@ class BaseFDEMProblem(BaseEMProblem):
################################ E-B Formulation #########################################
##########################################################################################
class Problem3D_e(BaseFDEMProblem):
class Problem_e(BaseFDEMProblem):
"""
By eliminating the magnetic flux density using
@@ -199,11 +199,22 @@ class Problem3D_e(BaseFDEMProblem):
_solutionType = 'eSolution'
_formulation = 'EB'
fieldsPair = Fields3D_e
fieldsPair = Fields_e
def __init__(self, mesh, **kwargs):
BaseFDEMProblem.__init__(self, mesh, **kwargs)
def _GLoc(self, fieldType):
if fieldType == 'e':
return 'E'
elif fieldType == 'b':
return 'F'
elif (fieldType == 'h') or (fieldType == 'j'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def getA(self, freq):
"""
System matrix
@@ -283,12 +294,11 @@ class Problem3D_e(BaseFDEMProblem):
if adjoint:
dRHS = MfMui * (C * v)
return s_mDeriv(dRHS) - 1j * omega(freq) * s_eDeriv(v)
else:
return C.T * (MfMui * s_mDeriv(v)) -1j * omega(freq) * s_eDeriv(v)
class Problem3D_b(BaseFDEMProblem):
class Problem_b(BaseFDEMProblem):
"""
We eliminate :math:`\mathbf{e}` using
@@ -310,11 +320,21 @@ class Problem3D_b(BaseFDEMProblem):
_solutionType = 'bSolution'
_formulation = 'EB'
fieldsPair = Fields3D_b
fieldsPair = Fields_b
def __init__(self, mesh, **kwargs):
BaseFDEMProblem.__init__(self, mesh, **kwargs)
def _GLoc(self, fieldType):
if fieldType == 'e':
return 'E'
elif fieldType == 'b':
return 'F'
elif (fieldType == 'h') or (fieldType == 'j'):
return'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def getA(self, freq):
"""
System matrix
@@ -436,7 +456,7 @@ class Problem3D_b(BaseFDEMProblem):
##########################################################################################
class Problem3D_j(BaseFDEMProblem):
class Problem_j(BaseFDEMProblem):
"""
We eliminate \\\(\\\mathbf{h}\\\) using
@@ -458,11 +478,21 @@ class Problem3D_j(BaseFDEMProblem):
_solutionType = 'jSolution'
_formulation = 'HJ'
fieldsPair = Fields3D_j
fieldsPair = Fields_j
def __init__(self, mesh, **kwargs):
BaseFDEMProblem.__init__(self, mesh, **kwargs)
def _GLoc(self, fieldType):
if fieldType == 'h':
return 'E'
elif fieldType == 'j':
return 'F'
elif (fieldType == 'e') or (fieldType == 'b'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def getA(self, freq):
"""
System matrix
@@ -577,7 +607,7 @@ class Problem3D_j(BaseFDEMProblem):
class Problem3D_h(BaseFDEMProblem):
class Problem_h(BaseFDEMProblem):
"""
We eliminate \\\(\\\mathbf{j}\\\) using
@@ -596,11 +626,22 @@ class Problem3D_h(BaseFDEMProblem):
_solutionType = 'hSolution'
_formulation = 'HJ'
fieldsPair = Fields3D_h
fieldsPair = Fields_h
def __init__(self, mesh, **kwargs):
BaseFDEMProblem.__init__(self, mesh, **kwargs)
def _GLoc(self, fieldType):
if fieldType == 'h':
return 'E'
elif fieldType == 'j':
return 'F'
elif (fieldType == 'e') or (fieldType == 'b'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def getA(self, freq):
"""
System matrix
+9 -81
View File
@@ -60,20 +60,6 @@ class Fields(SimPEG.Problem.Fields):
return self._bPrimary(solution, srcList) + self._bSecondary(solution, srcList)
def _bSecondary(self, solution, srcList):
"""
Total magnetic flux density is sum of primary and secondary
:param numpy.ndarray solution: field we solved for
:param list srcList: list of sources
:rtype: numpy.ndarray
:return: total magnetic flux density
"""
if getattr(self, '_bSecondary', None) is None:
raise NotImplementedError ('Getting b from %s is not implemented' %self.knownFields.keys()[0])
return self._bSecondary(solution, srcList)
def _h(self, solution, srcList):
"""
Total magnetic field is sum of primary and secondary
@@ -138,21 +124,6 @@ class Fields(SimPEG.Problem.Fields):
return self._bDeriv_u(src, v, adjoint), self._bDeriv_m(src, v, adjoint)
return np.array(self._bDeriv_u(src, du_dm_v, adjoint) + self._bDeriv_m(src, v, adjoint), dtype = complex)
def _bSecondaryDeriv(self, src, du_dm_v, v, adjoint = False):
"""
Total derivative of b with respect to the inversion model. Returns :math:`d\mathbf{b}/d\mathbf{m}` for forward and (:math:`d\mathbf{b}/d\mathbf{u}`, :math:`d\mathb{u}/d\mathbf{m}`) for the adjoint
:param Src src: sorce
:param numpy.ndarray du_dm_v: derivative of the solution vector with respect to the model times a vector (is None for adjoint)
:param numpy.ndarray v: vector to take sensitivity product with
:param bool adjoint: adjoint?
:rtype: numpy.ndarray
:return: derivative times a vector (or tuple for adjoint)
"""
# TODO: modify when primary field is dependent on m
return self._bDeriv(src, du_dm_v, v, adjoint = adjoint)
def _hDeriv(self, src, du_dm_v, v, adjoint = False):
"""
Total derivative of h with respect to the inversion model. Returns :math:`d\mathbf{h}/d\mathbf{m}` for forward and (:math:`d\mathbf{h}/d\mathbf{u}`, :math:`d\mathb{u}/d\mathbf{m}`) for the adjoint
@@ -189,9 +160,9 @@ class Fields(SimPEG.Problem.Fields):
return self._jDeriv_u(src, v, adjoint), self._jDeriv_m(src, v, adjoint)
return np.array(self._jDeriv_u(src, du_dm_v, adjoint) + self._jDeriv_m(src, v, adjoint), dtype = complex)
class Fields3D_e(Fields):
class Fields_e(Fields):
"""
Fields object for Problem3D_e.
Fields object for Problem_e.
:param Mesh mesh: mesh
:param Survey survey: survey
@@ -210,7 +181,7 @@ class Fields3D_e(Fields):
}
def __init__(self, mesh, survey, **kwargs):
Fields.__init__(self, mesh, survey, **kwargs)
Fields.__init__(self,mesh,survey,**kwargs)
def startup(self):
self.prob = self.survey.prob
@@ -222,16 +193,6 @@ class Fields3D_e(Fields):
self._MeSigmaDeriv = self.survey.prob.MeSigmaDeriv
self._MfMui = self.survey.prob.MfMui
def _GLoc(self, fieldType):
if fieldType == 'e':
return 'E'
elif fieldType == 'b':
return 'F'
elif (fieldType == 'h') or (fieldType == 'j'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def _ePrimary(self, eSolution, srcList):
"""
@@ -455,9 +416,9 @@ class Fields3D_e(Fields):
class Fields3D_b(Fields):
class Fields_b(Fields):
"""
Fields object for Problem3D_b.
Fields object for Problem_b.
:param Mesh mesh: mesh
:param Survey survey: survey
@@ -494,19 +455,6 @@ class Fields3D_b(Fields):
self._nC = self.survey.prob.mesh.nC
def _GLoc(self,fieldType):
if fieldType == 'e':
return 'E'
elif fieldType == 'b':
return 'F'
elif fieldType == 'bSecondary':
return 'F'
elif (fieldType == 'h') or (fieldType == 'j'):
return'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def _bPrimary(self, bSolution, srcList):
"""
Primary magnetic flux density from source
@@ -724,9 +672,9 @@ class Fields3D_b(Fields):
return Zero()
class Fields3D_j(Fields):
class Fields_j(Fields):
"""
Fields object for Problem3D_j.
Fields object for Problem_j.
:param Mesh mesh: mesh
:param Survey survey: survey
@@ -760,16 +708,6 @@ class Fields3D_j(Fields):
self._aveE2CCV = self.survey.prob.mesh.aveE2CCV
self._nC = self.survey.prob.mesh.nC
def _GLoc(self,fieldType):
if fieldType == 'h':
return 'E'
elif fieldType == 'j':
return 'F'
elif (fieldType == 'e') or (fieldType == 'b'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def _jPrimary(self, jSolution, srcList):
"""
Primary current density from source
@@ -1019,9 +957,9 @@ class Fields3D_j(Fields):
return 1./(1j * omega(src.freq)) * VI * (self._aveE2CCV * ( s_mDeriv(v) - self._edgeCurl.T * ( self._MfRhoDeriv(jSolution) * v ) ) )
class Fields3D_h(Fields):
class Fields_h(Fields):
"""
Fields object for Problem3D_h.
Fields object for Problem_h.
:param Mesh mesh: mesh
:param Survey survey: survey
@@ -1055,16 +993,6 @@ class Fields3D_h(Fields):
self._aveE2CCV = self.survey.prob.mesh.aveE2CCV
self._nC = self.survey.prob.mesh.nC
def _GLoc(self,fieldType):
if fieldType == 'h':
return 'E'
elif fieldType == 'j':
return 'F'
elif (fieldType == 'e') or (fieldType == 'b'):
return 'CCV'
else:
raise Exception('Field type must be e, b, h, j')
def _hPrimary(self, hSolution, srcList):
"""
Primary magnetic field from source
-139
View File
@@ -1,139 +0,0 @@
import SimPEG
from SimPEG import sp
class BaseRx(SimPEG.Survey.BaseRx):
"""
Frequency domain receiver base class
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
assert(orientation in ['x','y','z']), "Orientation %s not known. Orientation must be in 'x', 'y', 'z'. Arbitrary orientations have not yet been implemented."%orientation
assert(component in ['real', 'imag']), "'component' must be 'real' or 'imag', not %s"%component
self.projComp = orientation
self.component = component
SimPEG.Survey.BaseRx.__init__(self, locs, rxType=None) #TODO: remove rxType from baseRx
def projGLoc(self, u):
"""Grid Location projection (e.g. Ex Fy ...)"""
return u._GLoc(self.projField) + self.projComp
def eval(self, src, mesh, f):
"""
Project fields to recievers to get data.
:param Source src: FDEM source
:param Mesh mesh: mesh used
:param Fields f: fields object
:rtype: numpy.ndarray
:return: fields projected to recievers
"""
P = self.getP(mesh, self.projGLoc(f))
f_part_complex = f[src, self.projField]
f_part = getattr(f_part_complex, self.component) # get the real or imag component
return P*f_part
def evalDeriv(self, src, mesh, f, v, adjoint=False):
"""
Derivative of projected fields with respect to the inversion model times a vector.
:param Source src: FDEM source
:param Mesh mesh: mesh used
:param Fields f: fields object
:param numpy.ndarray v: vector to multiply
:rtype: numpy.ndarray
:return: fields projected to recievers
"""
P = self.getP(mesh, self.projGLoc(f))
if not adjoint:
Pv_complex = P * v
Pv = getattr(Pv_complex, self.component)
elif adjoint:
Pv_real = P.T * v
if self.component == 'imag':
Pv = 1j*Pv_real
elif self.component == 'real':
Pv = Pv_real.astype(complex)
else:
raise NotImplementedError('must be real or imag')
return Pv
class Point_e(BaseRx):
"""
Electric field FDEM receiver
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
self.projField = 'e'
super(Point_e, self).__init__(locs, orientation, component)
class Point_b(BaseRx):
"""
Magnetic flux FDEM receiver
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
self.projField = 'b'
super(Point_b, self).__init__(locs, orientation, component)
class Point_bSecondary(BaseRx):
"""
Magnetic flux FDEM receiver
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
self.projField = 'bSecondary'
super(Point_bSecondary, self).__init__(locs, orientation, component)
class Point_h(BaseRx):
"""
Magnetic field FDEM receiver
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
self.projField = 'h'
super(Point_h, self).__init__(locs, orientation, component)
class Point_j(BaseRx):
"""
Current density FDEM receiver
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string orientation: receiver orientation 'x', 'y' or 'z'
:param string component: real or imaginary component 'real' or 'imag'
"""
def __init__(self, locs, orientation=None, component=None):
self.projField = 'j'
super(Point_j, self).__init__(locs, orientation, component)
+237 -22
View File
@@ -10,16 +10,13 @@ class BaseSrc(Survey.BaseSrc):
freq = None
integrate = False
_ePrimary = None
_bPrimary = None
_hPrimary = None
_jPrimary = None
def __init__(self, rxList, **kwargs):
Survey.BaseSrc.__init__(self, rxList, **kwargs)
def eval(self, prob):
"""
Evaluate the source terms.
- :math:`s_m` : magnetic source term
- :math:`s_e` : electric source term
@@ -56,9 +53,7 @@ class BaseSrc(Survey.BaseSrc):
:rtype: numpy.ndarray
:return: primary magnetic flux density
"""
if self._bPrimary is None:
return Zero()
return self._bPrimary
return Zero()
def hPrimary(self, prob):
"""
@@ -68,9 +63,7 @@ class BaseSrc(Survey.BaseSrc):
:rtype: numpy.ndarray
:return: primary magnetic field
"""
if self._hPrimary is None:
return Zero()
return self._hPrimary
return Zero()
def ePrimary(self, prob):
"""
@@ -80,9 +73,7 @@ class BaseSrc(Survey.BaseSrc):
:rtype: numpy.ndarray
:return: primary electric field
"""
if self._ePrimary is None:
return Zero()
return self._ePrimary
return Zero()
def jPrimary(self, prob):
"""
@@ -92,9 +83,7 @@ class BaseSrc(Survey.BaseSrc):
:rtype: numpy.ndarray
:return: primary current density
"""
if self._jPrimary is None:
return Zero()
return self._jPrimary
return Zero()
def s_m(self, prob):
"""
@@ -116,7 +105,7 @@ class BaseSrc(Survey.BaseSrc):
"""
return Zero()
def s_mDeriv(self, prob, v, adjoint = False):
def s_mDeriv(self, prob, v, adjoint=False):
"""
Derivative of magnetic source term with respect to the inversion model
@@ -129,7 +118,7 @@ class BaseSrc(Survey.BaseSrc):
return Zero()
def s_eDeriv(self, prob, v, adjoint = False):
def s_eDeriv(self, prob, v, adjoint=False):
"""
Derivative of electric source term with respect to the inversion model
@@ -152,11 +141,11 @@ class RawVec_e(BaseSrc):
:param bool integrate: Integrate the source term (multiply by Me) [False]
"""
def __init__(self, rxList, freq, s_e, **kwargs):
def __init__(self, rxList, freq, s_e):
self._s_e = np.array(s_e, dtype=complex)
self.freq = float(freq)
BaseSrc.__init__(self, rxList, **kwargs)
BaseSrc.__init__(self, rxList)
def s_e(self, prob):
"""
@@ -181,11 +170,11 @@ class RawVec_m(BaseSrc):
:param bool integrate: Integrate the source term (multiply by Me) [False]
"""
def __init__(self, rxList, freq, s_m, **kwargs): #ePrimary=Zero(), bPrimary=Zero(), hPrimary=Zero(), jPrimary=Zero()):
def __init__(self, rxList, freq, s_m, integrate=True): #ePrimary=Zero(), bPrimary=Zero(), hPrimary=Zero(), jPrimary=Zero()):
self._s_m = np.array(s_m, dtype=complex)
self.freq = float(freq)
BaseSrc.__init__(self, rxList, **kwargs)
BaseSrc.__init__(self, rxList)
def s_m(self, prob):
"""
@@ -614,5 +603,231 @@ class CircularLoop(BaseSrc):
return -C.T * (MMui_s * self.bPrimary(prob))
class PrimSec(BaseSrc):
"""
Primary-Secondary source in the physical properties. A primary problem is
first solved, and the fields from this problem are used to construct a
source term for the secondary problem. Either a mesh and
fields need to be provided or a prob and a survey.
For the EB formulation, we start the derivation from Maxwell's equations:
.. math::
\\nabla \\times \\vec{E} + i \omega \\vec{B} = \\vec{s_m} \\\\
\\nabla \\times \\mu^{-1} \\vec{B} - \sigma \\vec{E} = \\vec{s_e}
we consider the physical properties, fields, and fluxes to be composed of
two parts, a primary and a secondary:
- :math:`\sigma = \sigma_p + \sigma_s`
- :math:`\mu^{-1} = \mu^{-1}_p + \mu^{-1}_s`
- :math:`\\vec{E} = \\vec{E_p} + \\vec{E_s}`
- :math:`\\vec{B} = \\vec{B_p} + \\vec{B_s}`
and choose our primary such that
.. math::
\\nabla \\times \\vec{E}_p + i \omega \\vec{B}_p = \\vec{s_m} \\\\
\\nabla \\times \\mu^{-1}_p \\vec{B}_p - \sigma_p \\vec{E}_p = \\vec{s_e}_p
so the secondary problem is then
.. math::
\\nabla \\times \\vec{E}_s + i \omega \\vec{B}_s = 0 \\\\
\\nabla \\times \\mu^{-1} \\vec{B}_s - \sigma \\vec{E}_s = - \\nabla \\times \\mu^{-1}_s \\vec{B}_p + \sigma_s \\vec{E}_p
If instead, HJ formulation is considered, then we start off with
.. math::
\\nabla \\times \\rho \\vec{J} + i \omega \\mu \\vec{H} = \\vec{s_m} \\\\
\\nabla \\times \\vec{H} - \\vec{J} = \\vec{s_e}
and we define the primary secondary problem in terms of
- :math:`\\rho = \\rho_p + \\rho_s`
- :math:`\mu = \mu_p + \mu_s`
- :math:`\\vec{J} = \\vec{J_p} + \\vec{J_s}`
- :math:`\\vec{H} = \\vec{H_p} + \\vec{H_s}`
with the primary being defined by
.. math::
\\nabla \\times \\rho_p \\vec{J}_p + i \omega \\mu_p \\vec{H}_p = \\vec{s_m} \\\\
\\nabla \\times \\vec{H}_p - \\vec{J}_p = \\vec{s_e}
so the secondary problem is given by
.. math::
\\nabla \\times \\rho \\vec{J}_s + i \omega \\mu \\vec{H} = - \\nabla \\times \\rho_s \\vec{J}_p - i \omega \\mu_s \\vec{H}_p \\
\\nabla \\times \\vec{H}_p - \\vec{J}_p = 0
Note: if different meshes are employed for the primary and secondary
problems, then we need to interpolate the fields from the primary mesh to
the secondary mesh. We do this by always interpolating the field and
computing a flux if need be in order to ensure that fluxes remain
numerically divergence free.
:param list rxList: Receiver list
:param float freq: frequency
:param numpy.array m: primary model
:param Problem prob: primary problem
:param Survey survey: primary survey
"""
def __init__(self, rxList, freq, m, prob, survey):
self.freq = float(freq)
self.m = m
self.prob = prob
self.survey = survey
self.fields = None
if self.survey.ispaired:
if self.survey.prob is not self.prob:
raise Exception('The survey object is already paired to a problem. Use survey.unpair()')
else:
self.prob.pair(self.survey)
self.mesh = self.prob.mesh
self.prob.curModel = self.m
BaseSrc.__init__(self, rxList)
def MeSigma(self, prob):
if getattr(self, '_MeSigma', None) is None:
sigmaprimary = self.prob.curModel.sigma
if self.mesh != prob.mesh:
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType='CC')
sigmaprimary = P * sigmaprimary
self._MeSigma = prob.mesh.getEdgeInnerProduct(sigmaprimary)
return self._MeSigma
def MfMui(self, prob):
if getattr(self, '_MfMui', None) is None:
muiprimary = self.prob.curModel.mui
if self.mesh != prob.mesh and not isinstance(muiprimary,float): # if different meshes and mu is a vector --> need to interpolate
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType='CC')
muiprimary = P * muiprimary
self._MfMui = prob.mesh.getFaceInnerProduct(muiprimary)
return self._MfMui
def MfRho(self, prob):
if getattr(self, '_MfRho', None) is None:
rhoprimary = self.prob.curModel.rho
if self.mesh != prob.mesh:
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType='CC')
rhoprimary = P * rhoprimary
self._MfRho = prob.mesh.getFaceInnerProduct(rhoprimary)
return self._MfRho
def MeMu(self, prob):
if getattr(self, '_MeMu', None) is None:
muprimary = self.prob.curModel.mu
if self.mesh != prob.mesh and not isinstance(muiprimary,float): # if different meshes and mu is a vector --> need to interpolate
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType='CC')
muprimary = P * muprimary
self._MeMu = prob.mesh.getEdgeInnerProduct(muprimary)
return self._MeMu
# note if you switch from one formulation to another, but are using the same mesh, this will break
def ePrimary(self,prob):
if getattr(self, '_ePrimary', None) is None:
if self.fields is None:
self.fields = self.prob.fields(self.m)
ePrimary = self.fields[:,'e']
if self.mesh != prob.mesh:
if self.prob._formulation == 'HJ':
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType=prob._GLoc('e'), locTypeFrom='CCV')
else:
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType=prob._GLoc('e'))
ePrimary = Utils.mkvc(P * ePrimary)
self._ePrimary = Utils.mkvc(ePrimary)
return self._ePrimary
# note if you switch from one formulation to another, but are using the same mesh, this will break
def bPrimary(self, prob):
if getattr(self, '_bPrimary', None) is None:
if self.fields is None:
self.fields = self.prob.fields(self.m)
if self.mesh == prob.mesh:
bPrimary = self.fields[:,'b']
else:
bPrimary = prob.mesh.edgeCurl * self.ePrimary(prob)
self._bPrimary = Utils.mkvc(bPrimary)
return self._bPrimary
# note if you switch from one formulation to another, but are using the same mesh, this will break
def hPrimary(self, prob):
if getattr(self, '_hPrimary', None) is None:
if self.fields is None:
self.fields = self.prob.fields(self.m)
hPrimary = self.fields[:,'h']
if self.mesh != prob.mesh:
if self.prob._formulation == 'EB':
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType=prob._GLoc('h'), locTypeFrom='CCV')
else:
P = self.mesh.getInterpolationMatMesh2Mesh(prob.mesh, locType=prob._GLoc('h'))
print P.shape, hPrimary.shape, prob._GLoc('h')
hPrimary = Utils.mkvc(P * hPrimary)
self._hPrimary = Utils.mkvc(hPrimary)
return self._hPrimary
# note if you switch from one formulation to another, but are using the same mesh, this will break
def jPrimary(self, prob):
if getattr(self, '_jPrimary', None) is None:
if self.fields is None:
self.fields = self.prob.fields(self.m)
if self.mesh == prob.mesh:
jPrimary = self.fields[:,'j']
else:
jPrimary = prob.mesh.edgeCurl * self.hPrimary(prob)
self._jPrimary = Utils.mkvc(jPrimary)
return self._jPrimary
def s_e(self,prob):
if prob._formulation == 'EB':
# - \\nabla \\times \\mu^{-1}_s \\vec{B}_p + \sigma_s \\vec{E}_p
s_e = -prob.mesh.edgeCurl.T * ((prob.MfMui - self.MfMui(prob)) * self.bPrimary(prob)) + (prob.MeSigma - self.MeSigma(prob)) * self.ePrimary(prob)
return Utils.mkvc(s_e)
else:
return Zero()
def s_eDeriv(self, prob, v, adjoint=False):
if prob._formulation == 'EB':
if adjoint is True:
return prob.MeSigmaDeriv(self.ePrimary(prob)).T * v
return prob.MeSigmaDeriv(self.ePrimary(prob)) * v
else:
return Zero()
def s_m(self,prob):
if prob._formulation == 'HJ':
# - \\nabla \\times \\rho_s \\vec{J}_p - i \omega \\mu_s \\vec{H}_p
s_m = - prob.mesh.edgeCurl.T * (prob.MfRho - self.MfRho(prob)) * self.jPrimary(prob) - 1j * omega(self.freq) * ((prob.MeMu - self.MeMu(prob)) * self.hPrimary(prob))
return s_m
else:
return Zero()
def s_mDeriv(self, prob, v, adjoint=False):
if prob._formulation == 'HJ':
if adjoint is True:
return - prob.MfRhoDeriv(self.jPrimary(prob)).T * (prob.mesh.edgeCurl * v)
return - prob.mesh.edgeCurl.T * (prob.MfRhoDeriv(self.jPrimary(prob)) * v)
else:
return Zero()
+117 -2
View File
@@ -4,9 +4,124 @@ from SimPEG.EM.Base import BaseEMSurvey
from scipy.constants import mu_0
from SimPEG.Utils import Zero, Identity
import SrcFDEM as Src
import RxFDEM as Rx
from SimPEG import sp
####################################################
# Receivers
####################################################
class Rx(SimPEG.Survey.BaseRx):
"""
Frequency domain receivers
:param numpy.ndarray locs: receiver locations (ie. :code:`np.r_[x,y,z]`)
:param string rxType: reciever type from knownRxTypes
"""
knownRxTypes = {
'exr':['e', 'x', 'real'],
'eyr':['e', 'y', 'real'],
'ezr':['e', 'z', 'real'],
'exi':['e', 'x', 'imag'],
'eyi':['e', 'y', 'imag'],
'ezi':['e', 'z', 'imag'],
'bxr':['b', 'x', 'real'],
'byr':['b', 'y', 'real'],
'bzr':['b', 'z', 'real'],
'bxi':['b', 'x', 'imag'],
'byi':['b', 'y', 'imag'],
'bzi':['b', 'z', 'imag'],
'jxr':['j', 'x', 'real'],
'jyr':['j', 'y', 'real'],
'jzr':['j', 'z', 'real'],
'jxi':['j', 'x', 'imag'],
'jyi':['j', 'y', 'imag'],
'jzi':['j', 'z', 'imag'],
'hxr':['h', 'x', 'real'],
'hyr':['h', 'y', 'real'],
'hzr':['h', 'z', 'real'],
'hxi':['h', 'x', 'imag'],
'hyi':['h', 'y', 'imag'],
'hzi':['h', 'z', 'imag'],
}
radius = None
def __init__(self, locs, rxType):
SimPEG.Survey.BaseRx.__init__(self, locs, rxType)
@property
def projField(self):
"""Field Type projection (e.g. e b ...)"""
return self.knownRxTypes[self.rxType][0]
@property
def projComp(self):
"""Component projection (real/imag)"""
return self.knownRxTypes[self.rxType][2]
def projGLoc(self, u):
"""Grid Location projection (e.g. Ex Fy ...)"""
return u.prob._GLoc(self.rxType[0]) + self.knownRxTypes[self.rxType][1]
def eval(self, src, mesh, f):
"""
Project fields to recievers to get data.
:param Source src: FDEM source
:param Mesh mesh: mesh used
:param Fields f: fields object
:rtype: numpy.ndarray
:return: fields projected to recievers
"""
P = self.getP(mesh, self.projGLoc(f))
f_part_complex = f[src, self.projField]
# get the real or imag component
real_or_imag = self.projComp
f_part = getattr(f_part_complex, real_or_imag)
return P*f_part
def evalDeriv(self, src, mesh, f, v, adjoint=False):
"""
Derivative of projected fields with respect to the inversion model times a vector.
:param Source src: FDEM source
:param Mesh mesh: mesh used
:param Fields f: fields object
:param numpy.ndarray v: vector to multiply
:rtype: numpy.ndarray
:return: fields projected to recievers
"""
P = self.getP(mesh, self.projGLoc(f))
if not adjoint:
Pv_complex = P * v
real_or_imag = self.projComp
Pv = getattr(Pv_complex, real_or_imag)
elif adjoint:
Pv_real = P.T * v
real_or_imag = self.projComp
if real_or_imag == 'imag':
Pv = 1j*Pv_real
elif real_or_imag == 'real':
Pv = Pv_real.astype(complex)
else:
raise NotImplementedError('must be real or imag')
return Pv
####################################################
# Survey
####################################################
class Survey(BaseEMSurvey):
"""
Frequency domain electromagnetic survey
@@ -15,7 +130,7 @@ class Survey(BaseEMSurvey):
"""
srcPair = Src.BaseSrc
rxPair = Rx.BaseRx
rxPair = Rx
def __init__(self, srcList, **kwargs):
# Sort these by frequency
+3 -5
View File
@@ -1,5 +1,3 @@
from SurveyFDEM import Survey
import SrcFDEM as Src
import RxFDEM as Rx
from ProblemFDEM import Problem3D_e, Problem3D_b, Problem3D_j, Problem3D_h
from FieldsFDEM import Fields3D_e, Fields3D_b, Fields3D_j, Fields3D_h
from SurveyFDEM import Rx, Src, Survey
from FDEM import BaseFDEMProblem, Problem_e, Problem_b, Problem_j, Problem_h
from FieldsFDEM import *
-160
View File
@@ -1,160 +0,0 @@
import numpy as np
def getxBCyBC_CC(mesh, alpha, beta, gamma):
# def getxBCyBC(mesh, alpha, beta, gamma):
"""
This is a subfunction generating mixed-boundary condition:
.. math::
\nabla \cdot \vec{j} = -\nabla \cdot \vec{j}_s = q
\rho \vec{j} = -\nabla \phi \phi
\alpha \phi + \beta \frac{\partial \phi}{\partial r} = \gamma \ at \ r = \partial \Omega
xBC = f_1(\alpha, \beta, \gamma)
yBC = f(\alpha, \beta, \gamma)
Computes xBC and yBC for cell-centered discretizations
"""
if mesh.dim == 1: #1D
if (len(alpha) != 2 or len(beta) != 2 or len(gamma) != 2):
raise Exception("Lenght of list, alpha should be 2")
fCCxm,fCCxp = mesh.cellBoundaryInd
nBC = fCCxm.sum()+fCCxp.sum()
h_xm, h_xp = mesh.gridCC[fCCxm], mesh.gridCC[fCCxp]
alpha_xm, beta_xm, gamma_xm = alpha[0], beta[0], gamma[0]
alpha_xp, beta_xp, gamma_xp = alpha[1], beta[1], gamma[1]
# h_xm, h_xp = mesh.gridCC[fCCxm], mesh.gridCC[fCCxp]
h_xm, h_xp = mesh.hx[0], mesh.hx[-1]
a_xm = gamma_xm/(0.5*alpha_xm-beta_xm/h_xm)
b_xm = (0.5*alpha_xm+beta_xm/h_xm)/(0.5*alpha_xm-beta_xm/h_xm)
a_xp = gamma_xp/(0.5*alpha_xp-beta_xp/h_xp)
b_xp = (0.5*alpha_xp+beta_xp/h_xp)/(0.5*alpha_xp-beta_xp/h_xp)
xBC_xm = 0.5*a_xm
xBC_xp = 0.5*a_xp/b_xp
yBC_xm = 0.5*(1.-b_xm)
yBC_xp = 0.5*(1.-1./b_xp)
xBC = np.r_[xBC_xm, xBC_xp]
yBC = np.r_[yBC_xm, yBC_xp]
elif mesh.dim == 2: #2D
if (len(alpha) != 4 or len(beta) != 4 or len(gamma) != 4):
raise Exception("Lenght of list, alpha should be 4")
fxm,fxp,fym,fyp = mesh.faceBoundaryInd
nBC = fxm.sum()+fxp.sum()+fxm.sum()+fxp.sum()
alpha_xm, beta_xm, gamma_xm = alpha[0], beta[0], gamma[0]
alpha_xp, beta_xp, gamma_xp = alpha[1], beta[1], gamma[1]
alpha_ym, beta_ym, gamma_ym = alpha[2], beta[2], gamma[2]
alpha_yp, beta_yp, gamma_yp = alpha[3], beta[3], gamma[3]
# h_xm, h_xp = mesh.gridCC[fCCxm,0], mesh.gridCC[fCCxp,0]
# h_ym, h_yp = mesh.gridCC[fCCym,1], mesh.gridCC[fCCyp,1]
h_xm, h_xp = mesh.hx[0]*np.ones_like(alpha_xm), mesh.hx[-1]*np.ones_like(alpha_xp)
h_ym, h_yp = mesh.hy[0]*np.ones_like(alpha_ym), mesh.hy[-1]*np.ones_like(alpha_yp)
a_xm = gamma_xm/(0.5*alpha_xm-beta_xm/h_xm)
b_xm = (0.5*alpha_xm+beta_xm/h_xm)/(0.5*alpha_xm-beta_xm/h_xm)
a_xp = gamma_xp/(0.5*alpha_xp-beta_xp/h_xp)
b_xp = (0.5*alpha_xp+beta_xp/h_xp)/(0.5*alpha_xp-beta_xp/h_xp)
a_ym = gamma_ym/(0.5*alpha_ym-beta_ym/h_ym)
b_ym = (0.5*alpha_ym+beta_ym/h_ym)/(0.5*alpha_ym-beta_ym/h_ym)
a_yp = gamma_yp/(0.5*alpha_yp-beta_yp/h_yp)
b_yp = (0.5*alpha_yp+beta_yp/h_yp)/(0.5*alpha_yp-beta_yp/h_yp)
xBC_xm = 0.5*a_xm
xBC_xp = 0.5*a_xp/b_xp
yBC_xm = 0.5*(1.-b_xm)
yBC_xp = 0.5*(1.-1./b_xp)
xBC_ym = 0.5*a_ym
xBC_yp = 0.5*a_yp/b_yp
yBC_ym = 0.5*(1.-b_ym)
yBC_yp = 0.5*(1.-1./b_yp)
sortindsfx = np.argsort(np.r_[np.arange(mesh.nFx)[fxm], np.arange(mesh.nFx)[fxp]])
sortindsfy = np.argsort(np.r_[np.arange(mesh.nFy)[fym], np.arange(mesh.nFy)[fyp]])
xBC_x = np.r_[xBC_xm, xBC_xp][sortindsfx]
xBC_y = np.r_[xBC_ym, xBC_yp][sortindsfy]
yBC_x = np.r_[yBC_xm, yBC_xp][sortindsfx]
yBC_y = np.r_[yBC_ym, yBC_yp][sortindsfy]
xBC = np.r_[xBC_x, xBC_y]
yBC = np.r_[yBC_x, yBC_y]
elif mesh.dim == 3: #3D
if (len(alpha) != 6 or len(beta) != 6 or len(gamma) != 6):
raise Exception("Lenght of list, alpha should be 6")
# fCCxm,fCCxp,fCCym,fCCyp,fCCzm,fCCzp = mesh.cellBoundaryInd
fxm,fxp,fym,fyp,fzm,fzp = mesh.faceBoundaryInd
nBC = fxm.sum()+fxp.sum()+fxm.sum()+fxp.sum()
alpha_xm, beta_xm, gamma_xm = alpha[0], beta[0], gamma[0]
alpha_xp, beta_xp, gamma_xp = alpha[1], beta[1], gamma[1]
alpha_ym, beta_ym, gamma_ym = alpha[2], beta[2], gamma[2]
alpha_yp, beta_yp, gamma_yp = alpha[3], beta[3], gamma[3]
alpha_zm, beta_zm, gamma_zm = alpha[4], beta[4], gamma[4]
alpha_zp, beta_zp, gamma_zp = alpha[5], beta[5], gamma[5]
# h_xm, h_xp = mesh.gridCC[fCCxm,0], mesh.gridCC[fCCxp,0]
# h_ym, h_yp = mesh.gridCC[fCCym,1], mesh.gridCC[fCCyp,1]
# h_zm, h_zp = mesh.gridCC[fCCzm,2], mesh.gridCC[fCCzp,2]
h_xm, h_xp = mesh.hx[0]*np.ones_like(alpha_xm), mesh.hx[-1]*np.ones_like(alpha_xp)
h_ym, h_yp = mesh.hy[0]*np.ones_like(alpha_ym), mesh.hy[-1]*np.ones_like(alpha_yp)
h_zm, h_zp = mesh.hz[0]*np.ones_like(alpha_zm), mesh.hz[-1]*np.ones_like(alpha_zp)
a_xm = gamma_xm/(0.5*alpha_xm-beta_xm/h_xm)
b_xm = (0.5*alpha_xm+beta_xm/h_xm)/(0.5*alpha_xm-beta_xm/h_xm)
a_xp = gamma_xp/(0.5*alpha_xp-beta_xp/h_xp)
b_xp = (0.5*alpha_xp+beta_xp/h_xp)/(0.5*alpha_xp-beta_xp/h_xp)
a_ym = gamma_ym/(0.5*alpha_ym-beta_ym/h_ym)
b_ym = (0.5*alpha_ym+beta_ym/h_ym)/(0.5*alpha_ym-beta_ym/h_ym)
a_yp = gamma_yp/(0.5*alpha_yp-beta_yp/h_yp)
b_yp = (0.5*alpha_yp+beta_yp/h_yp)/(0.5*alpha_yp-beta_yp/h_yp)
a_zm = gamma_zm/(0.5*alpha_zm-beta_zm/h_zm)
b_zm = (0.5*alpha_zm+beta_zm/h_zm)/(0.5*alpha_zm-beta_zm/h_zm)
a_zp = gamma_zp/(0.5*alpha_zp-beta_zp/h_zp)
b_zp = (0.5*alpha_zp+beta_zp/h_zp)/(0.5*alpha_zp-beta_zp/h_zp)
xBC_xm = 0.5*a_xm
xBC_xp = 0.5*a_xp/b_xp
yBC_xm = 0.5*(1.-b_xm)
yBC_xp = 0.5*(1.-1./b_xp)
xBC_ym = 0.5*a_ym
xBC_yp = 0.5*a_yp/b_yp
yBC_ym = 0.5*(1.-b_ym)
yBC_yp = 0.5*(1.-1./b_yp)
xBC_zm = 0.5*a_zm
xBC_zp = 0.5*a_zp/b_zp
yBC_zm = 0.5*(1.-b_zm)
yBC_zp = 0.5*(1.-1./b_zp)
sortindsfx = np.argsort(np.r_[np.arange(mesh.nFx)[fxm], np.arange(mesh.nFx)[fxp]])
sortindsfy = np.argsort(np.r_[np.arange(mesh.nFy)[fym], np.arange(mesh.nFy)[fyp]])
sortindsfz = np.argsort(np.r_[np.arange(mesh.nFz)[fzm], np.arange(mesh.nFz)[fzp]])
xBC_x = np.r_[xBC_xm, xBC_xp][sortindsfx]
xBC_y = np.r_[xBC_ym, xBC_yp][sortindsfy]
xBC_z = np.r_[xBC_zm, xBC_zp][sortindsfz]
yBC_x = np.r_[yBC_xm, yBC_xp][sortindsfx]
yBC_y = np.r_[yBC_ym, yBC_yp][sortindsfy]
yBC_z = np.r_[yBC_zm, yBC_zp][sortindsfz]
xBC = np.r_[xBC_x, xBC_y, xBC_z]
yBC = np.r_[yBC_x, yBC_y, yBC_z]
return xBC, yBC
-148
View File
@@ -1,148 +0,0 @@
import SimPEG
from SimPEG.Utils import Identity, Zero
import numpy as np
from scipy.constants import epsilon_0
class Fields(SimPEG.Problem.Fields):
knownFields = {}
dtype = float
def _phiDeriv(self, src, du_dm_v, v, adjoint=False):
if getattr(self, '_phiDeriv_u', None) is None or getattr(self, '_phiDeriv_m', None) is None:
raise NotImplementedError ('Getting phiDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._phiDeriv_u(src, v, adjoint=adjoint), self._phiDeriv_m(src, v, adjoint=adjoint)
return np.array(self._phiDeriv_u(src, du_dm_v, adjoint) + self._phiDeriv_m(src, v, adjoint), dtype = float)
def _eDeriv(self, src, du_dm_v, v, adjoint=False):
if getattr(self, '_eDeriv_u', None) is None or getattr(self, '_eDeriv_m', None) is None:
raise NotImplementedError ('Getting eDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._eDeriv_u(src, v, adjoint), self._eDeriv_m(src, v, adjoint)
return np.array(self._eDeriv_u(src, du_dm_v, adjoint) + self._eDeriv_m(src, v, adjoint), dtype = float)
def _jDeriv(self, src, du_dm_v, v, adjoint=False):
if getattr(self, '_jDeriv_u', None) is None or getattr(self, '_jDeriv_m', None) is None:
raise NotImplementedError ('Getting jDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._jDeriv_u(src, v, adjoint), self._jDeriv_m(src, v, adjoint)
return np.array(self._jDeriv_u(src, du_dm_v, adjoint) + self._jDeriv_m(src, v, adjoint), dtype = float)
class Fields_CC(Fields):
knownFields = {'phiSolution':'CC'}
aliasFields = {
'phi': ['phiSolution','CC','_phi'],
'j' : ['phiSolution','F','_j'],
'e' : ['phiSolution','F','_e'],
'charge' : ['phiSolution','CC','_charge'],
}
# primary - secondary
# CC variables
def __init__(self, mesh, survey, **kwargs):
Fields.__init__(self, mesh, survey, **kwargs)
mesh.setCellGradBC("neumann")
cellGrad = mesh.cellGrad
def startup(self):
self.prob = self.survey.prob
def _GLoc(self, fieldType):
if fieldType == 'phi':
return 'CC'
elif fieldType == 'e' or fieldType == 'j':
return 'F'
else:
raise Exception('Field type must be phi, e, j')
def _phi(self, phiSolution, srcList):
return phiSolution
def _phiDeriv_u(self, src, v, adjoint = False):
return Identity()*v
def _phiDeriv_m(self, src, v, adjoint = False):
return Zero()
def _j(self, phiSolution, srcList):
"""
.. math::
\mathbf{j} = \mathbf{M}^{f \ -1}_{\rho} \mathbf{G} \phi
"""
return self.prob.MfRhoI*self.prob.Grad*phiSolution
def _e(self, phiSolution, srcList):
"""
In HJ formulation e is not well-defined!!
.. math::
\vec{e} = -\nabla \phi
"""
return -self.mesh.cellGrad*phiSolution
def _charge(self, phiSolution, srcList):
"""
.. math::
\int \nabla \codt \vec{e} = \int \frac{\rho_v }{\epsillon_0}
"""
return epsilon_0*self.prob.Vol*(self.mesh.faceDiv*self._e(phiSolution, srcList))
class Fields_N(Fields):
knownFields = {'phiSolution':'N'}
aliasFields = {
'phi': ['phiSolution','N','_phi'],
'j' : ['phiSolution','E','_j'],
'e' : ['phiSolution','E','_e'],
'charge' : ['phiSolution','N','_charge'],
}
# primary - secondary
# N variables
def __init__(self, mesh, survey, **kwargs):
Fields.__init__(self, mesh, survey, **kwargs)
def startup(self):
self.prob = self.survey.prob
def _GLoc(self, fieldType):
if fieldType == 'phi':
return 'N'
elif fieldType == 'e' or fieldType == 'j':
return 'E'
else:
raise Exception('Field type must be phi, e, j')
def _phi(self, phiSolution, srcList):
return phiSolution
def _phiDeriv_u(self, src, v, adjoint = False):
return Identity()*v
def _phiDeriv_m(self, src, v, adjoint = False):
return Zero()
def _j(self, phiSolution, srcList):
"""
In EB formulation j is not well-defined!!
.. math::
\mathbf{j} = - \mathbf{M}^{e}_{\sigma} \mathbf{G} \phi
"""
return self.prob.MeSigma * self._e(phiSolution, srcList)
def _e(self, phiSolution, srcList):
"""
In HJ formulation e is not well-defined!!
.. math::
\vec{e} = -\nabla \phi
"""
return -self.mesh.nodalGrad * phiSolution
def _charge(self, phiSolution, srcList):
"""
.. math::
\int \nabla \codt \vec{e} = \int \frac{\rho_v }{\epsillon_0}
"""
return - epsilon_0*(self.mesh.nodalGrad.T*self.mesh.getEdgeInnerProduct()*self._e(phiSolution, srcList))
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import SimPEG
from SimPEG.Utils import Identity, Zero
import numpy as np
class Fields_ky(SimPEG.Problem.TimeFields):
"""
Fancy Field Storage for a 2.5D code.
u[:,'phi', kyInd] = phi
print u[src0,'phi']
Only one field type is stored for
each problem, the rest are computed. The fields obejct acts like an array and is indexed by
.. code-block:: python
f = problem.fields(m)
e = f[srcList,'e']
j = f[srcList,'j']
If accessing all sources for a given field, use the :code:`:`
.. code-block:: python
f = problem.fields(m)
phi = f[:,'phi']
e = f[:,'e']
b = f[:,'b']
The array returned will be size (nE or nF, nSrcs :math:`\\times` nFrequencies)
"""
knownFields = {}
dtype = float
def _phiDeriv(self,kyInd, src, du_dm_v, v, adjoint=False):
if getattr(self, '_phiDeriv_u', None) is None or getattr(self, '_phiDeriv_m', None) is None:
raise NotImplementedError ('Getting phiDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._phiDeriv_u(kyInd, src, v, adjoint=adjoint), self._phiDeriv_m(kyInd, src, v, adjoint=adjoint)
return np.array(self._phiDeriv_u(kyInd, src, du_dm_v, adjoint) + self._phiDeriv_m(kyInd, src, v, adjoint), dtype = float)
def _eDeriv(self,kyInd, src, du_dm_v, v, adjoint=False):
if getattr(self, '_eDeriv_u', None) is None or getattr(self, '_eDeriv_m', None) is None:
raise NotImplementedError ('Getting eDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._eDeriv_u(kyInd, src, v, adjoint), self._eDeriv_m(kyInd, src, v, adjoint)
return np.array(self._eDeriv_u(kyInd, src, du_dm_v, adjoint) + self._eDeriv_m(kyInd, src, v, adjoint), dtype = float)
def _jDeriv(self,kyInd, src, du_dm_v, v, adjoint=False):
if getattr(self, '_jDeriv_u', None) is None or getattr(self, '_jDeriv_m', None) is None:
raise NotImplementedError ('Getting jDerivs from %s is not implemented' %self.knownFields.keys()[0])
if adjoint:
return self._jDeriv_u(kyInd, src, v, adjoint), self._jDeriv_m(kyInd, src, v, adjoint)
return np.array(self._jDeriv_u(kyInd, src, du_dm_v, adjoint) + self._jDeriv_m(kyInd, src, v, adjoint), dtype = float)
# def _eDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
# if adjoint is True:
# return self._eDeriv_u(tInd, src, v, adjoint), self._eDeriv_m(tInd, src, v, adjoint)
# return self._eDeriv_u(tInd, src, dun_dm_v) + self._eDeriv_m(tInd, src, v)
# def _bDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
# if adjoint is True:
# return self._bDeriv_u(tInd, src, v, adjoint), self._bDeriv_m(tInd, src, v, adjoint)
# return self._bDeriv_u(tInd, src, dun_dm_v) + self._bDeriv_m(tInd, src, v)
class Fields_ky_CC(Fields_ky):
knownFields = {'phiSolution':'CC'}
aliasFields = {
'phi': ['phiSolution','CC','_phi'],
'j' : ['phiSolution','F','_j'],
'e' : ['phiSolution','F','_e'],
}
# primary - secondary
# CC variables
def __init__(self, mesh, survey, **kwargs):
Fields_ky.__init__(self, mesh, survey, **kwargs)
def startup(self):
self.prob = self.survey.prob
def _GLoc(self, fieldType):
if fieldType == 'phi':
return 'CC'
elif fieldType == 'e' or fieldType == 'j':
return 'F'
else:
raise Exception('Field type must be phi, e, j')
def _phi(self, phiSolution, src, kyInd):
return phiSolution
def _phiDeriv_u(self, kyInd, src, v, adjoint = False):
return Identity()*v
def _phiDeriv_m(self, kyInd, src, v, adjoint = False):
return Zero()
def _j(self, phiSolution, srcList):
raise NotImplementedError
def _e(self, phiSolution, srcList):
raise NotImplementedError
class Fields_ky_N(Fields_ky):
knownFields = {'phiSolution':'N'}
aliasFields = {
'phi': ['phiSolution','N','_phi'],
'j' : ['phiSolution','E','_j'],
'e' : ['phiSolution','E','_e'],
}
# primary - secondary
# CC variables
def __init__(self, mesh, survey, **kwargs):
Fields_ky.__init__(self, mesh, survey, **kwargs)
def startup(self):
self.prob = self.survey.prob
def _GLoc(self, fieldType):
if fieldType == 'phi':
return 'N'
elif fieldType == 'e' or fieldType == 'j':
return 'E'
else:
raise Exception('Field type must be phi, e, j')
def _phi(self, phiSolution, src, kyInd):
return phiSolution
def _phiDeriv_u(self, kyInd, src, v, adjoint = False):
return Identity()*v
def _phiDeriv_m(self, kyInd, src, v, adjoint = False):
return Zero()
def _j(self, phiSolution, srcList):
raise NotImplementedError
def _e(self, phiSolution, srcList):
raise NotImplementedError
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from SimPEG import Problem, Utils
from SimPEG.EM.Base import BaseEMProblem
from SurveyDC import Survey
from FieldsDC import Fields, Fields_CC, Fields_N
from SimPEG.Utils import sdiag
import numpy as np
from SimPEG.Utils import Zero
from BoundaryUtils import getxBCyBC_CC
class BaseDCProblem(BaseEMProblem):
surveyPair = Survey
fieldsPair = Fields
Ainv = None
def fields(self, m):
self.curModel = m
if not self.Ainv == None:
self.Ainv.clean()
f = self.fieldsPair(self.mesh, self.survey)
A = self.getA()
self.Ainv = self.Solver(A, **self.solverOpts)
RHS = self.getRHS()
u = self.Ainv * RHS
Srcs = self.survey.srcList
f[Srcs, self._solutionType] = u
return f
def Jvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
Jv = self.dataPair(self.survey) #same size as the data
A = self.getA()
for src in self.survey.srcList:
u_src = f[src, self._solutionType] # solution vector
dA_dm_v = self.getADeriv(u_src, v)
dRHS_dm_v = self.getRHSDeriv(src, v)
du_dm_v = self.Ainv * ( - dA_dm_v + dRHS_dm_v )
for rx in src.rxList:
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v = df_dmFun(src, du_dm_v, v, adjoint=False)
Jv[src, rx] = rx.evalDeriv(src, self.mesh, f, df_dm_v)
return Utils.mkvc(Jv)
def Jtvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
# Ensure v is a data object.
if not isinstance(v, self.dataPair):
v = self.dataPair(self.survey, v)
Jtv = np.zeros(m.size)
AT = self.getA()
for src in self.survey.srcList:
u_src = f[src, self._solutionType]
for rx in src.rxList:
PTv = rx.evalDeriv(src, self.mesh, f, v[src, rx], adjoint=True) # wrt f, need possibility wrt m
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_duT, df_dmT = df_duTFun(src, None, PTv, adjoint=True)
ATinvdf_duT = self.Ainv * df_duT
dA_dmT = self.getADeriv(u_src, ATinvdf_duT, adjoint=True)
dRHS_dmT = self.getRHSDeriv(src, ATinvdf_duT, adjoint=True)
du_dmT = -dA_dmT + dRHS_dmT
Jtv += (df_dmT + du_dmT).astype(float)
return Utils.mkvc(Jtv)
def getSourceTerm(self):
"""
takes concept of source and turns it into a matrix
"""
"""
Evaluates the sources, and puts them in matrix form
:rtype: (numpy.ndarray, numpy.ndarray)
:return: q (nC or nN, nSrc)
"""
Srcs = self.survey.srcList
if self._formulation is 'EB':
n = self.mesh.nN
# return NotImplementedError
elif self._formulation is 'HJ':
n = self.mesh.nC
q = np.zeros((n, len(Srcs)))
for i, src in enumerate(Srcs):
q[:,i] = src.eval(self)
return q
class Problem3D_CC(BaseDCProblem):
_solutionType = 'phiSolution'
_formulation = 'HJ' # CC potentials means J is on faces
fieldsPair = Fields_CC
def __init__(self, mesh, **kwargs):
BaseDCProblem.__init__(self, mesh, **kwargs)
self.setBC()
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = D MfRhoI G
"""
D = self.Div
G = self.Grad
MfRhoI = self.MfRhoI
A = D * MfRhoI * G
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return V.T * A
return A
def getADeriv(self, u, v, adjoint= False):
D = self.Div
G = self.Grad
MfRhoIDeriv = self.MfRhoIDeriv
if adjoint:
return(MfRhoIDeriv( G * u ).T) * ( D.T * v)
return D * (MfRhoIDeriv( G * u ) * v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
def setBC(self):
if self.mesh.dim==3:
fxm,fxp,fym,fyp,fzm,fzp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
gBFzm = self.mesh.gridFz[fzm,:]
gBFzp = self.mesh.gridFz[fzp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
temp_zm, temp_zp = np.ones_like(gBFzm[:,2]), np.ones_like(gBFzp[:,2])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
alpha_zm, alpha_zp = temp_zm*0., temp_zp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
beta_zm, beta_zp = temp_zm, temp_zp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
gamma_zm, gamma_zp = temp_zm*0., temp_zp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp, alpha_zm, alpha_zp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp, beta_zm, beta_zp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp, gamma_zm, gamma_zp]
elif self.mesh.dim==2:
fxm,fxp,fym,fyp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp]
x_BC, y_BC = getxBCyBC_CC(self.mesh, alpha, beta, gamma)
V = self.Vol
self.Div = V * self.mesh.faceDiv
P_BC, B = self.mesh.getBCProjWF_simple()
M = B*self.mesh.aveCC2F
self.Grad = self.Div.T - P_BC*Utils.sdiag(y_BC)*M
class Problem3D_N(BaseDCProblem):
_solutionType = 'phiSolution'
_formulation = 'EB' # N potentials means B is on faces
fieldsPair = Fields_N
def __init__(self, mesh, **kwargs):
BaseDCProblem.__init__(self, mesh, **kwargs)
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = G.T MeSigma G
"""
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
A = Grad.T * MeSigma * Grad
# Handling Null space of A
A[0,0] = A[0,0] + 1.
return A
def getADeriv(self, u, v, adjoint=False):
"""
Product of the derivative of our system matrix with respect to the model and a vector
"""
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
if not adjoint:
return Grad.T*(self.MeSigmaDeriv(Grad*u)*v)
elif adjoint:
return self.MeSigmaDeriv(Grad*u).T * (Grad*v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
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from SimPEG import Problem, Utils
from SimPEG.EM.Base import BaseEMProblem
from SurveyDC import Survey, Survey_ky
from FieldsDC_2D import Fields_ky, Fields_ky_CC, Fields_ky_N
from SimPEG.Utils import sdiag
import numpy as np
from SimPEG.Utils import Zero
from BoundaryUtils import getxBCyBC_CC
class BaseDCProblem_2D(BaseEMProblem):
surveyPair = Survey_ky
fieldsPair = Fields_ky
nky = 15
kys = np.logspace(-4, 1, nky)
Ainv = [None for i in range(nky)]
nT = nky # Only for using TimeFields
def fields(self, m):
self.curModel = m
if not self.Ainv[0] == None:
for i in range(self.nky):
self.Ainv[i].clean()
f = self.fieldsPair(self.mesh, self.survey)
Srcs = self.survey.srcList
for iky in range(self.nky):
ky = self.kys[iky]
A = self.getA(ky)
self.Ainv[iky] = self.Solver(A, **self.solverOpts)
RHS = self.getRHS(ky)
u = self.Ainv[iky] * RHS
f[Srcs, self._solutionType, iky] = u
return f
def Jvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
Jv = self.dataPair(self.survey) #same size as the data
Jv0 = self.dataPair(self.survey)
# Assume y=0.
# This needs some thoughts to implement in general when src is dipole
dky = np.diff(self.kys)
dky = np.r_[dky[0], dky]
y = 0.
#TODO: this loop is pretty slow .. (Parellize)
for iky in range(self.nky):
ky = self.kys[iky]
A = self.getA(ky)
for src in self.survey.srcList:
u_src = f[src, self._solutionType, iky] # solution vector
dA_dm_v = self.getADeriv(ky, u_src, v)
dRHS_dm_v = self.getRHSDeriv(ky, src, v)
du_dm_v = self.Ainv[iky] * ( - dA_dm_v + dRHS_dm_v )
for rx in src.rxList:
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v = df_dmFun(iky, src, du_dm_v, v, adjoint=False)
# Trapezoidal intergration
Jv1_temp = 1./np.pi*rx.evalDeriv(ky, src, self.mesh, f, df_dm_v)
if iky==0:
#First assigment
Jv[src, rx] = Jv1_temp*dky[iky]*np.cos(ky*y)
else:
Jv[src, rx] += Jv1_temp*dky[iky] /2.*np.cos(ky*y)
Jv[src, rx] += Jv0[src, rx]*dky[iky]/2.*np.cos(ky*y)
Jv0[src, rx] = Jv1_temp.copy()
return Utils.mkvc(Jv)
def Jtvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
# Ensure v is a data object.
if not isinstance(v, self.dataPair):
v = self.dataPair(self.survey, v)
Jtv = np.zeros(m.size, dtype=float)
# Assume y=0.
# This needs some thoughts to implement in general when src is dipole
dky = np.diff(self.kys)
dky = np.r_[dky[0], dky]
y = 0.
for src in self.survey.srcList:
for rx in src.rxList:
Jtv_temp1 = np.zeros(m.size, dtype=float)
Jtv_temp0 = np.zeros(m.size, dtype=float)
#TODO: this loop is pretty slow .. (Parellize)
for iky in range(self.nky):
u_src = f[src, self._solutionType, iky]
ky = self.kys[iky]
AT = self.getA(ky)
PTv = rx.evalDeriv(ky, src, self.mesh, f, v[src, rx], adjoint=True) # wrt f, need possibility wrt m
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_duT, df_dmT = df_duTFun(iky, src, None, PTv, adjoint=True)
ATinvdf_duT = self.Ainv[iky] * df_duT
dA_dmT = self.getADeriv(ky, u_src, ATinvdf_duT, adjoint=True)
dRHS_dmT = self.getRHSDeriv(ky, src, ATinvdf_duT, adjoint=True)
du_dmT = -dA_dmT + dRHS_dmT
Jtv_temp1 = 1./np.pi*(df_dmT + du_dmT).astype(float)
# Trapezoidal intergration
if iky==0:
#First assigment
Jtv += Jtv_temp1*dky[iky]*np.cos(ky*y)
else:
Jtv += Jtv_temp1*dky[iky]/2.*np.cos(ky*y)
Jtv += Jtv_temp0*dky[iky]/2.*np.cos(ky*y)
Jtv_temp0 = Jtv_temp1.copy()
return Utils.mkvc(Jtv)
def getSourceTerm(self, ky):
"""
takes concept of source and turns it into a matrix
"""
"""
Evaluates the sources, and puts them in matrix form
:rtype: (numpy.ndarray, numpy.ndarray)
:return: q (nC or nN, nSrc)
"""
Srcs = self.survey.srcList
if self._formulation is 'EB':
n = self.mesh.nN
# return NotImplementedError
elif self._formulation is 'HJ':
n = self.mesh.nC
q = np.zeros((n, len(Srcs)))
for i, src in enumerate(Srcs):
q[:,i] = src.eval(self)
return q
class Problem2D_CC(BaseDCProblem_2D):
_solutionType = 'phiSolution'
_formulation = 'HJ' # CC potentials means J is on faces
fieldsPair = Fields_ky_CC
def __init__(self, mesh, **kwargs):
BaseDCProblem_2D.__init__(self, mesh, **kwargs)
self.setBC()
def getA(self, ky):
"""
Make the A matrix for the cell centered DC resistivity problem
A = D MfRhoI G
"""
D = self.Div
G = self.Grad
vol = self.mesh.vol
MfRhoI = self.MfRhoI
# Get resistivity rho
rho = self.curModel.rho
A = D * MfRhoI * G + Utils.sdiag(ky**2*vol/rho)
return A
def getADeriv(self, ky, u, v, adjoint= False):
D = self.Div
G = self.Grad
vol = self.mesh.vol
MfRhoIDeriv = self.MfRhoIDeriv
rho = self.curModel.rho
if adjoint:
return(MfRhoIDeriv( G * u ).T) * ( D.T * v) + ky**2*Utils.sdiag(u.flatten()*vol*(-1./rho**2))*v
return D * ((MfRhoIDeriv( G * u )) * v) + ky**2*Utils.sdiag(u.flatten()*vol*(-1./rho**2))*v
def getRHS(self, ky):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm(ky)
return RHS
def getRHSDeriv(self, ky, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, ky, adjoint=adjoint)
# return qDeriv
return Zero()
def setBC(self):
if self.mesh.dim==3:
fxm,fxp,fym,fyp,fzm,fzp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
gBFzm = self.mesh.gridFz[fzm,:]
gBFzp = self.mesh.gridFz[fzp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
temp_zm, temp_zp = np.ones_like(gBFzm[:,2]), np.ones_like(gBFzp[:,2])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
alpha_zm, alpha_zp = temp_zm*0., temp_zp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
beta_zm, beta_zp = temp_zm, temp_zp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
gamma_zm, gamma_zp = temp_zm*0., temp_zp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp, alpha_zm, alpha_zp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp, beta_zm, beta_zp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp, gamma_zm, gamma_zp]
elif self.mesh.dim==2:
fxm,fxp,fym,fyp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp]
x_BC, y_BC = getxBCyBC_CC(self.mesh, alpha, beta, gamma)
V = self.Vol
self.Div = V * self.mesh.faceDiv
P_BC, B = self.mesh.getBCProjWF_simple()
M = B*self.mesh.aveCC2F
self.Grad = self.Div.T - P_BC*Utils.sdiag(y_BC)*M
class Problem2D_N(BaseDCProblem_2D):
_solutionType = 'phiSolution'
_formulation = 'EB' # CC potentials means J is on faces
fieldsPair = Fields_ky_N
def __init__(self, mesh, **kwargs):
BaseDCProblem_2D.__init__(self, mesh, **kwargs)
# self.setBC()
@property
def MnSigma(self):
"""
Node inner product matrix for \\(\\sigma\\). Used in the E-B formulation
"""
# TODO: only works isotropic sigma
sigma = self.curModel.sigma
vol = self.mesh.vol
MnSigma = Utils.sdiag(self.mesh.aveN2CC.T*(Utils.sdiag(vol)*sigma))
return MnSigma
def MnSigmaDeriv(self, u):
"""
Derivative of MnSigma with respect to the model
"""
sigma = self.curModel.sigma
sigmaderiv = self.curModel.sigmaDeriv
vol = self.mesh.vol
return Utils.sdiag(u)*self.mesh.aveN2CC.T*Utils.sdiag(vol) * self.curModel.sigmaDeriv
def getA(self, ky):
"""
Make the A matrix for the cell centered DC resistivity problem
A = D MfRhoI G
"""
MeSigma = self.MeSigma
MnSigma = self.MnSigma
Grad = self.mesh.nodalGrad
# Get conductivity sigma
sigma = self.curModel.sigma
A = Grad.T * MeSigma * Grad + ky**2*MnSigma
# Handling Null space of A
A[0,0] = A[0,0] + 1.
return A
def getADeriv(self, ky, u, v, adjoint= False):
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
sigma = self.curModel.sigma
vol = self.mesh.vol
if adjoint:
return self.MeSigmaDeriv(Grad*u).T * (Grad*v) + ky**2*self.MnSigmaDeriv(u).T*v
return Grad.T*(self.MeSigmaDeriv(Grad*u)*v) + ky**2*self.MnSigmaDeriv(u)*v
def getRHS(self, ky):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm(ky)
return RHS
def getRHSDeriv(self, ky, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, ky, adjoint=adjoint)
# return qDeriv
return Zero()
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import SimPEG
import numpy as np
from SimPEG.Utils import Zero, closestPoints
class BaseRx(SimPEG.Survey.BaseRx):
locs = None
rxType = None
knownRxTypes = {
'phi':['phi',None],
'ex':['e','x'],
'ey':['e','y'],
'ez':['e','z'],
'jx':['j','x'],
'jy':['j','y'],
'jz':['j','z'],
}
def __init__(self, locs, rxType, **kwargs):
SimPEG.Survey.BaseRx.__init__(self, locs, rxType, **kwargs)
@property
def projField(self):
"""Field Type projection (e.g. e b ...)"""
return self.knownRxTypes[self.rxType][0]
def projGLoc(self, f):
"""Grid Location projection (e.g. Ex Fy ...)"""
comp = self.knownRxTypes[self.rxType][1]
if comp is not None:
return f._GLoc(self.rxType) + comp
return f._GLoc(self.rxType)
def eval(self, src, mesh, f):
P = self.getP(mesh, self.projGLoc(f))
return P*f[src, self.projField]
def evalDeriv(self, src, mesh, f, v, adjoint=False):
P = self.getP(mesh, self.projGLoc(f))
if not adjoint:
return P*v
elif adjoint:
return P.T*v
# DC.Rx.Dipole(locs)
class Dipole(BaseRx):
def __init__(self, locsM, locsN, rxType = 'phi', **kwargs):
assert locsM.shape == locsN.shape, 'locsM and locsN need to be the same size'
locs = [locsM, locsN]
# We may not need this ...
BaseRx.__init__(self, locs, rxType)
@property
def nD(self):
"""Number of data in the receiver."""
return self.locs[0].shape[0]
# Not sure why ...
# return int(self.locs[0].size / 2)
def getP(self, mesh, Gloc):
if mesh in self._Ps:
return self._Ps[mesh]
P0 = mesh.getInterpolationMat(self.locs[0], Gloc)
P1 = mesh.getInterpolationMat(self.locs[1], Gloc)
P = P0 - P1
if self.storeProjections:
self._Ps[mesh] = P
return P
class Dipole_ky(BaseRx):
def __init__(self, locsM, locsN, rxType = 'phi', **kwargs):
assert locsM.shape == locsN.shape, 'locsM and locsN need to be the same size'
locs = [locsM, locsN]
# We may not need this ...
BaseRx.__init__(self, locs, rxType)
@property
def nD(self):
"""Number of data in the receiver."""
return self.locs[0].shape[0]
# Not sure why ...
# return int(self.locs[0].size / 2)
def getP(self, mesh, Gloc):
if mesh in self._Ps:
return self._Ps[mesh]
P0 = mesh.getInterpolationMat(self.locs[0], Gloc)
P1 = mesh.getInterpolationMat(self.locs[1], Gloc)
P = P0 - P1
if self.storeProjections:
self._Ps[mesh] = P
return P
def eval(self, kys, src, mesh, f):
P = self.getP(mesh, self.projGLoc(f))
Pf = P*f[src, self.projField,:]
return self.IntTrapezoidal(kys, Pf, y=0.)
def evalDeriv(self, ky, src, mesh, f, v, adjoint=False):
P = self.getP(mesh, self.projGLoc(f))
if not adjoint:
return P*v
elif adjoint:
return P.T*v
def IntTrapezoidal(self, kys, Pf, y=0.):
phi = np.zeros(Pf.shape[0])
nky = kys.size
dky = np.diff(kys)
dky = np.r_[dky[0], dky]
phi0 = 1./np.pi*Pf[:,0]
for iky in range(nky):
phi1 = 1./np.pi*Pf[:,iky]
phi += phi1*dky[iky]/2.*np.cos(kys[iky]*y)
phi += phi0*dky[iky]/2.*np.cos(kys[iky]*y)
phi0 = phi1.copy()
return phi
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import SimPEG
# from SimPEG.EM.Base import BaseEMSurvey
from SimPEG.Utils import Zero, closestPoints, mkvc
import numpy as np
class BaseSrc(SimPEG.Survey.BaseSrc):
current = 1.0
loc = None
def __init__(self, rxList, **kwargs):
SimPEG.Survey.BaseSrc.__init__(self, rxList, **kwargs)
def eval(self, prob):
raise NotImplementedError
def evalDeriv(self, prob):
return Zero()
class Dipole(BaseSrc):
def __init__(self, rxList, locA, locB, **kwargs):
assert locA.shape == locB.shape, 'Shape of locA and locB should be the same'
self.loc = [locA, locB]
BaseSrc.__init__(self, rxList, **kwargs)
def eval(self, prob):
if prob._formulation == 'HJ':
inds = closestPoints(prob.mesh, self.loc, gridLoc='CC')
q = np.zeros(prob.mesh.nC)
q[inds] = self.current * np.r_[1., -1.]
elif prob._formulation == 'EB':
qa = prob.mesh.getInterpolationMat(self.loc[0], locType='N').todense()
qb = -prob.mesh.getInterpolationMat(self.loc[1], locType='N').todense()
q = self.current * mkvc(qa+qb)
return q
class Pole(BaseSrc):
def __init__(self, rxList, loc, **kwargs):
BaseSrc.__init__(self, rxList, loc=loc, **kwargs)
def eval(self, prob):
if prob._formulation == 'HJ':
inds = closestPoints(prob.mesh, self.loc)
q = np.zeros(prob.mesh.nC)
q[inds] = self.current * np.r_[1.]
elif prob._formulation == 'EB':
q = prob.mesh.getInterpolationMat(self.loc, locType='N').todense()
q = self.current * mkvc(q)
return q
# class Dipole_ky(BaseSrc):
# def __init__(self, rxList, locA, locB, **kwargs):
# assert locA.shape == locB.shape, 'Shape of locA and locB should be the same'
# self.loc = [locA[[0,2]], locB[[0,2]]]
# BaseSrc.__init__(self, rxList, **kwargs)
# def eval(self, prob):
# if prob._formulation == 'HJ':
# inds = closestPoints(prob.mesh, self.loc, gridLoc='CC')
# q = np.zeros(prob.mesh.nC)
# q[inds] = self.current * np.r_[1., -1.]
# elif prob._formulation == 'EB':
# qa = prob.mesh.getInterpolationMat(self.loc[0], locType='N').todense()
# qb = -prob.mesh.getInterpolationMat(self.loc[1], locType='N').todense()
# q = self.current * mkvc(qa+qb)
# return q
# class Pole_ky(BaseSrc):
# def __init__(self, rxList, loc, **kwargs):
# BaseSrc.__init__(self, rxList, loc=loc, **kwargs)
# def eval(self, prob):
# if prob._formulation == 'HJ':
# inds = closestPoints(prob.mesh, self.loc[[0,2]])
# q = np.zeros(prob.mesh.nC)
# q[inds] = self.current * np.r_[1.]
# elif prob._formulation == 'EB':
# q = prob.mesh.getInterpolationMat(self.loc[[0,2]], locType='N').todense()
# q = self.current * mkvc(q)
# return q
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import SimPEG
from SimPEG.EM.Base import BaseEMSurvey
from SimPEG import sp, Survey
from SimPEG.Utils import Zero, Identity
from RxDC import BaseRx
from SrcDC import BaseSrc
class Survey(BaseEMSurvey):
rxPair = BaseRx
srcPair = BaseSrc
def __init__(self, srcList, **kwargs):
self.srcList = srcList
BaseEMSurvey.__init__(self, srcList, **kwargs)
class Survey_ky(BaseEMSurvey):
rxPair = BaseRx
srcPair = BaseSrc
def __init__(self, srcList, **kwargs):
self.srcList = srcList
BaseEMSurvey.__init__(self, srcList, **kwargs)
def eval(self, f):
"""
Project fields to receiver locations
:param Fields u: fields object
:rtype: numpy.ndarray
:return: data
"""
data = SimPEG.Survey.Data(self)
kys = self.prob.kys
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.eval(kys, src, self.mesh, f)
return data
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import numpy as np
def WennerSrcList(nElecs, aSpacing, in2D=False, plotIt=False):
import SimPEG.EM.Static.DC as DC
elocs = np.arange(0,aSpacing*nElecs,aSpacing)
elocs -= (nElecs*aSpacing - aSpacing)/2
space = 1
WENNER = np.zeros((0,),dtype=int)
for ii in range(nElecs):
for jj in range(nElecs):
test = np.r_[jj,jj+space,jj+space*2,jj+space*3]
if np.any(test >= nElecs):
break
WENNER = np.r_[WENNER, test]
space += 1
WENNER = WENNER.reshape((-1,4))
if plotIt:
for i, s in enumerate('rbkg'):
plt.plot(elocs[WENNER[:,i]],s+'.')
plt.show()
# Create sources and receivers
i = 0
if in2D:
getLoc = lambda ii, abmn: np.r_[elocs[WENNER[ii,abmn]],0]
else:
getLoc = lambda ii, abmn: np.r_[elocs[WENNER[ii,abmn]],0, 0]
srcList = []
for i in range(WENNER.shape[0]):
rx = DC.Rx.Dipole(getLoc(i,1).reshape([1,-1]),getLoc(i,2).reshape([1,-1]))
src = DC.Src.Dipole([rx], getLoc(i,0),getLoc(i,3))
srcList += [src]
return srcList
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from ProblemDC import Problem3D_CC, Problem3D_N
from ProblemDC_2D import Problem2D_CC, Problem2D_N
from SurveyDC import Survey, Survey_ky
import SrcDC as Src #Pole
import RxDC as Rx
from FieldsDC import Fields_CC
from BoundaryUtils import getxBCyBC_CC
import Utils
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from SimPEG import Problem, Utils, Maps, Mesh
from SimPEG.EM.Base import BaseEMProblem
from SimPEG.EM.Static.DC.FieldsDC import Fields, Fields_CC, Fields_N
from SimPEG.Utils import sdiag
import numpy as np
from SimPEG.Utils import Zero
from SimPEG.EM.Static.DC import getxBCyBC_CC
from SurveyIP import Survey
class IPPropMap(Maps.PropMap):
"""
Property Map for IP Problems. The electrical chargeability,
(\\(\\eta\\)) is the default inversion property
"""
eta = Maps.Property("Electrical Chargeability", defaultInvProp = True)
class BaseIPProblem(BaseEMProblem):
surveyPair = Survey
fieldsPair = Fields
PropMap = IPPropMap
Ainv = None
sigma = None
rho = None
f = None
Ainv = None
def fields(self, m):
self.curModel = m
if self.f is None:
self.f = self.fieldsPair(self.mesh, self.survey)
if self.Ainv == None:
A = self.getA()
self.Ainv = self.Solver(A, **self.solverOpts)
RHS = self.getRHS()
u = self.Ainv * RHS
Srcs = self.survey.srcList
self.f[Srcs, self._solutionType] = u
return self.f
def Jvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
Jv = self.dataPair(self.survey) #same size as the data
A = self.getA()
for src in self.survey.srcList:
u_src = f[src, self._solutionType] # solution vector
dA_dm_v = self.getADeriv(u_src, v)
dRHS_dm_v = self.getRHSDeriv(src, v)
du_dm_v = self.Ainv * ( - dA_dm_v + dRHS_dm_v )
for rx in src.rxList:
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v = df_dmFun(src, du_dm_v, v, adjoint=False)
Jv[src, rx] = rx.evalDeriv(src, self.mesh, f, df_dm_v)
# Conductivity (d u / d log sigma)
if self._formulation is 'EB':
return -Utils.mkvc(Jv)
# Conductivity (d u / d log rho)
if self._formulation is 'HJ':
return Utils.mkvc(Jv)
def Jtvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
# Ensure v is a data object.
if not isinstance(v, self.dataPair):
v = self.dataPair(self.survey, v)
Jtv = np.zeros(m.size)
AT = self.getA()
for src in self.survey.srcList:
u_src = f[src, self._solutionType]
for rx in src.rxList:
PTv = rx.evalDeriv(src, self.mesh, f, v[src, rx], adjoint=True) # wrt f, need possibility wrt m
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_duT, df_dmT = df_duTFun(src, None, PTv, adjoint=True)
ATinvdf_duT = self.Ainv * df_duT
dA_dmT = self.getADeriv(u_src, ATinvdf_duT, adjoint=True)
dRHS_dmT = self.getRHSDeriv(src, ATinvdf_duT, adjoint=True)
du_dmT = -dA_dmT + dRHS_dmT
Jtv += (df_dmT + du_dmT).astype(float)
# Conductivity ((d u / d log sigma).T)
if self._formulation is 'EB':
return -Utils.mkvc(Jtv)
# Conductivity ((d u / d log rho).T)
if self._formulation is 'HJ':
return Utils.mkvc(Jtv)
def getSourceTerm(self):
"""
takes concept of source and turns it into a matrix
"""
"""
Evaluates the sources, and puts them in matrix form
:rtype: (numpy.ndarray, numpy.ndarray)
:return: q (nC or nN, nSrc)
"""
Srcs = self.survey.srcList
if self._formulation is 'EB':
n = self.mesh.nN
# return NotImplementedError
elif self._formulation is 'HJ':
n = self.mesh.nC
q = np.zeros((n, len(Srcs)))
for i, src in enumerate(Srcs):
q[:,i] = src.eval(self)
return q
@property
def deleteTheseOnModelUpdate(self):
toDelete = []
return toDelete
# assume log rho or log cond
@property
def MeSigma(self):
"""
Edge inner product matrix for \\(\\sigma\\). Used in the E-B formulation
"""
if getattr(self, '_MeSigma', None) is None:
self._MeSigma = self.mesh.getEdgeInnerProduct(self.sigma)
return self._MeSigma
@property
def MfRhoI(self):
"""
Inverse of :code:`MfRho`
"""
if getattr(self, '_MfRhoI', None) is None:
self._MfRhoI = self.mesh.getFaceInnerProduct(self.rho, invMat=True)
return self._MfRhoI
def MfRhoIDeriv(self,u):
"""
Derivative of :code:`MfRhoI` with respect to the model.
"""
dMfRhoI_dI = -self.MfRhoI**2
dMf_drho = self.mesh.getFaceInnerProductDeriv(self.rho)(u)
drho_dlogrho = Utils.sdiag(self.rho)*self.curModel.etaDeriv
return dMfRhoI_dI * ( dMf_drho * ( drho_dlogrho))
# TODO: This should take a vector
def MeSigmaDeriv(self, u):
"""
Derivative of MeSigma with respect to the model
"""
dsigma_dlogsigma = Utils.sdiag(self.sigma)*self.curModel.etaDeriv
return self.mesh.getEdgeInnerProductDeriv(self.sigma)(u) * dsigma_dlogsigma
class Problem3D_CC(BaseIPProblem):
_solutionType = 'phiSolution'
_formulation = 'HJ' # CC potentials means J is on faces
fieldsPair = Fields_CC
def __init__(self, mesh, **kwargs):
BaseIPProblem.__init__(self, mesh, **kwargs)
self.setBC()
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = D MfRhoI G
"""
D = self.Div
G = self.Grad
MfRhoI = self.MfRhoI
A = D * MfRhoI * G
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return V.T * A
return A
def getADeriv(self, u, v, adjoint= False):
D = self.Div
G = self.Grad
MfRhoIDeriv = self.MfRhoIDeriv
if adjoint:
# if self._makeASymmetric is True:
# v = V * v
return(MfRhoIDeriv( G * u ).T) * ( D.T * v)
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return V.T * ( D * ( MfRhoIDeriv( D.T * ( V * u ) ) * v ) )
return D * (MfRhoIDeriv( G * u ) * v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return self.Vol.T * RHS
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
def setBC(self):
if self.mesh.dim==3:
fxm,fxp,fym,fyp,fzm,fzp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
gBFzm = self.mesh.gridFz[fzm,:]
gBFzp = self.mesh.gridFz[fzp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
temp_zm, temp_zp = np.ones_like(gBFzm[:,2]), np.ones_like(gBFzp[:,2])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
alpha_zm, alpha_zp = temp_zm*0., temp_zp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
beta_zm, beta_zp = temp_zm, temp_zp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
gamma_zm, gamma_zp = temp_zm*0., temp_zp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp, alpha_zm, alpha_zp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp, beta_zm, beta_zp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp, gamma_zm, gamma_zp]
elif self.mesh.dim==2:
fxm,fxp,fym,fyp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp]
x_BC, y_BC = getxBCyBC_CC(self.mesh, alpha, beta, gamma)
V = self.Vol
self.Div = V * self.mesh.faceDiv
P_BC, B = self.mesh.getBCProjWF_simple()
M = B*self.mesh.aveCC2F
self.Grad = self.Div.T - P_BC*Utils.sdiag(y_BC)*M
class Problem3D_N(BaseIPProblem):
_solutionType = 'phiSolution'
_formulation = 'EB' # N potentials means B is on faces
fieldsPair = Fields_N
def __init__(self, mesh, **kwargs):
BaseIPProblem.__init__(self, mesh, **kwargs)
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = G.T MeSigma G
"""
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
A = Grad.T * MeSigma * Grad
# Handling Null space of A
A[0,0] = A[0,0] + 1.
return A
def getADeriv(self, u, v, adjoint=False):
"""
Product of the derivative of our system matrix with respect to the model and a vector
"""
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
if not adjoint:
return Grad.T*(self.MeSigmaDeriv(Grad*u)*v)
elif adjoint:
return self.MeSigmaDeriv(Grad*u).T * (Grad*v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
if __name__ == '__main__':
cs = 12.5
hx = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hz = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
sigma = np.ones(mesh.nC)
prob = BaseIPProblem(mesh, sigma=sigma)
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import SimPEG
from SimPEG.EM.Base import BaseEMSurvey
from SimPEG import sp, Survey
from SimPEG.Utils import Zero, Identity
from SimPEG.EM.Static.DC.SrcDC import BaseSrc
from SimPEG.EM.Static.DC.RxDC import BaseRx
class Survey(BaseEMSurvey):
rxPair = BaseRx
srcPair = BaseSrc
def __init__(self, srcList, **kwargs):
self.srcList = srcList
BaseEMSurvey.__init__(self, srcList, **kwargs)
def dpred(self, m, f=None):
"""
Predicted data.
.. math::
d_\\text{pred} = Pf(m)
"""
return self.prob.Jvec(m, m, f=f)
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from ProblemIP import Problem3D_CC, Problem3D_N
from SurveyIP import Survey
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from SimPEG import Problem, Utils, Maps, Mesh
from SimPEG.EM.Base import BaseEMProblem
from SimPEG.EM.Static.DC.FieldsDC import Fields, Fields_CC, Fields_N
from SimPEG.Utils import sdiag
import numpy as np
from SimPEG.Utils import Zero
from SimPEG.EM.Static.DC import getxBCyBC_CC
from SurveySIP import Survey, Data
class ColeColePropMap(Maps.PropMap):
"""
Property Map for EM Problems. The electrical conductivity (\\(\\sigma\\)) is the default inversion property, and the default value of the magnetic permeability is that of free space (\\(\\mu = 4\\pi\\times 10^{-7} \\) H/m)
"""
eta = Maps.Property("Electrical Conductivity", defaultInvProp=True)
tau = Maps.Property("Electrical Conductivity", defaultVal=0.1, propertyLink=('taui', Maps.ReciprocalMap))
taui = Maps.Property("Electrical Conductivity", defaultVal=1., propertyLink=('tau', Maps.ReciprocalMap))
c = Maps.Property("Electrical Conductivity", defaultVal=1.)
class BaseSIPProblem(BaseEMProblem):
surveyPair = Survey
fieldsPair = Fields
dataPair = Data
PropMap = ColeColePropMap
Ainv = None
sigma = None
rho = None
f = None
Ainv = None
def DebyeTime(self, t):
peta = self.curModel.eta*np.exp(-self.curModel.taui*t)
return peta
def EtaDeriv(self, t, v, adjoint=False):
v = np.array(v, dtype=float)
if adjoint:
return self.curModel.etaDeriv.T * (np.exp(-self.curModel.taui*t)*v)
else:
return np.exp(-self.curModel.taui*t) * (self.curModel.etaDeriv*v)
def TauiDeriv(self, t, v, adjoint=False):
v = np.array(v, dtype=float)
if adjoint:
return -self.curModel.tauiDeriv.T * (self.curModel.eta*t*np.exp(-self.curModel.taui*t)*v)
else:
return -self.curModel.eta*t*np.exp(-self.curModel.taui*t) * (self.curModel.tauiDeriv*v)
def fields(self, m):
self.curModel = m
if self.f is None:
self.f = self.fieldsPair(self.mesh, self.survey)
if self.Ainv == None:
A = self.getA()
self.Ainv = self.Solver(A, **self.solverOpts)
RHS = self.getRHS()
u = self.Ainv * RHS
Srcs = self.survey.srcList
self.f[Srcs, self._solutionType] = u
return self.f
def forward(self, m, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
Jv = self.dataPair(self.survey) #same size as the data
# A = self.getA()
JvAll = []
for tind in range(len(self.survey.times)):
#Pseudo-chareability
t = self.survey.times[tind]
v = self.DebyeTime(t)
for src in self.survey.srcList:
u_src = f[src, self._solutionType] # solution vector
dA_dm_v = self.getADeriv(u_src, v)
dRHS_dm_v = self.getRHSDeriv(src, v)
du_dm_v = self.Ainv * ( - dA_dm_v + dRHS_dm_v )
for rx in src.rxList:
timeindex = rx.getTimeP(self.survey.times)
if timeindex[tind]:
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v = df_dmFun(src, du_dm_v, v, adjoint=False)
Jv[src, rx, t] = rx.evalDeriv(src, self.mesh, f, df_dm_v)
# Conductivity (d u / d log sigma)
if self._formulation is 'EB':
return -Utils.mkvc(Jv)
# Resistivity (d u / d log rho)
if self._formulation is 'HJ':
return Utils.mkvc(Jv)
def Jvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
Jv = self.dataPair(self.survey) #same size as the data
# A = self.getA()
JvAll = []
#Assume only eta and tau (eta first then tau)
# v = [2*Mx1]
v = v.reshape((int(v.size/2), 2), order='F')
for tind in range(len(self.survey.times)):
t = self.survey.times[tind]
v0 = self.EtaDeriv(t, v[:,0])
v1 = self.TauiDeriv(t, v[:,1])
for src in self.survey.srcList:
u_src = f[src, self._solutionType] # solution vector
dA_dm_v0 = self.getADeriv(u_src, v0)
dRHS_dm_v0 = self.getRHSDeriv(src, v0)
du_dm_v0 = self.Ainv * ( - dA_dm_v0 + dRHS_dm_v0 )
dA_dm_v1 = self.getADeriv(u_src, v1)
dRHS_dm_v1 = self.getRHSDeriv(src, v1)
du_dm_v1 = self.Ainv * ( - dA_dm_v1 + dRHS_dm_v1 )
for rx in src.rxList:
timeindex = rx.getTimeP(self.survey.times)
if timeindex[tind]:
df_dmFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_dm_v0 = df_dmFun(src, du_dm_v0, v0, adjoint=False)
df_dm_v1 = df_dmFun(src, du_dm_v1, v1, adjoint=False)
Jv[src, rx, t] = rx.evalDeriv(src, self.mesh, f, df_dm_v0)
Jv[src, rx, t] += rx.evalDeriv(src, self.mesh, f, df_dm_v1)
# Conductivity (d u / d log sigma)
if self._formulation is 'EB':
return -Jv.tovec()
# Resistivity (d u / d log rho)
if self._formulation is 'HJ':
return Jv.tovec()
def Jtvec(self, m, v, f=None):
if f is None:
f = self.fields(m)
self.curModel = m
# Ensure v is a data object.
if not isinstance(v, self.dataPair):
v = self.dataPair(self.survey, v)
Jtv= np.zeros(m.size)
for tind in range(len(self.survey.times)):
t = self.survey.times[tind]
for src in self.survey.srcList:
u_src = f[src, self._solutionType]
for rx in src.rxList:
timeindex = rx.getTimeP(self.survey.times)
if timeindex[tind]:
PTv = rx.evalDeriv(src, self.mesh, f, v[src, rx, t], adjoint=True) # wrt f, need possibility wrt m
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
df_duT, df_dmT = df_duTFun(src, None, PTv, adjoint=True)
ATinvdf_duT = self.Ainv * df_duT
dA_dmT = self.getADeriv(u_src, ATinvdf_duT, adjoint=True)
dRHS_dmT = self.getRHSDeriv(src, ATinvdf_duT, adjoint=True)
du_dmT = -dA_dmT + dRHS_dmT
Jtv += np.r_[self.EtaDeriv(self.survey.times[tind], du_dmT, adjoint=True), self.TauiDeriv(self.survey.times[tind], du_dmT, adjoint=True)]
# Conductivity ((d u / d log sigma).T)
if self._formulation is 'EB':
return -Jtv
# Conductivity ((d u / d log rho).T)
if self._formulation is 'HJ':
return Jtv
def getSourceTerm(self):
"""
takes concept of source and turns it into a matrix
"""
"""
Evaluates the sources, and puts them in matrix form
:rtype: (numpy.ndarray, numpy.ndarray)
:return: q (nC or nN, nSrc)
"""
Srcs = self.survey.srcList
if self._formulation is 'EB':
n = self.mesh.nN
# return NotImplementedError
elif self._formulation is 'HJ':
n = self.mesh.nC
q = np.zeros((n, len(Srcs)))
for i, src in enumerate(Srcs):
q[:,i] = src.eval(self)
return q
@property
def deleteTheseOnModelUpdate(self):
toDelete = []
return toDelete
# assume log rho or log cond
@property
def MeSigma(self):
"""
Edge inner product matrix for \\(\\sigma\\). Used in the E-B formulation
"""
if getattr(self, '_MeSigma', None) is None:
self._MeSigma = self.mesh.getEdgeInnerProduct(self.sigma)
return self._MeSigma
@property
def MfRhoI(self):
"""
Inverse of :code:`MfRho`
"""
if getattr(self, '_MfRhoI', None) is None:
self._MfRhoI = self.mesh.getFaceInnerProduct(self.rho, invMat=True)
return self._MfRhoI
def MfRhoIDeriv(self,u):
"""
Derivative of :code:`MfRhoI` with respect to the model.
"""
dMfRhoI_dI = -self.MfRhoI**2
dMf_drho = self.mesh.getFaceInnerProductDeriv(self.rho)(u)
drho_dlogrho = Utils.sdiag(self.rho)
return dMfRhoI_dI * ( dMf_drho * ( drho_dlogrho))
# TODO: This should take a vector
def MeSigmaDeriv(self, u):
"""
Derivative of MeSigma with respect to the model
"""
dsigma_dlogsigma = Utils.sdiag(self.sigma)
return self.mesh.getEdgeInnerProductDeriv(self.sigma)(u) * dsigma_dlogsigma
class Problem3D_CC(BaseSIPProblem):
_solutionType = 'phiSolution'
_formulation = 'HJ' # CC potentials means J is on faces
fieldsPair = Fields_CC
def __init__(self, mesh, **kwargs):
BaseSIPProblem.__init__(self, mesh, **kwargs)
self.setBC()
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = D MfRhoI G
"""
D = self.Div
G = self.Grad
# TODO: this won't work for full anisotropy
MfRhoI = self.MfRhoI
A = D * MfRhoI * G
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return V.T * A
return A
def getADeriv(self, u, v, adjoint= False):
D = self.Div
G = self.Grad
MfRhoIDeriv = self.MfRhoIDeriv
if adjoint:
# if self._makeASymmetric is True:
# v = V * v
return(MfRhoIDeriv( G * u ).T) * ( D.T * v)
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return V.T * ( D * ( MfRhoIDeriv( D.T * ( V * u ) ) * v ) )
return D * (MfRhoIDeriv( G * u ) * v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
# I think we should deprecate this for DC problem.
# if self._makeASymmetric is True:
# return self.Vol.T * RHS
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
def setBC(self):
if self.mesh.dim==3:
fxm,fxp,fym,fyp,fzm,fzp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
gBFzm = self.mesh.gridFz[fzm,:]
gBFzp = self.mesh.gridFz[fzp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
temp_zm, temp_zp = np.ones_like(gBFzm[:,2]), np.ones_like(gBFzp[:,2])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
alpha_zm, alpha_zp = temp_zm*0., temp_zp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
beta_zm, beta_zp = temp_zm, temp_zp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
gamma_zm, gamma_zp = temp_zm*0., temp_zp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp, alpha_zm, alpha_zp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp, beta_zm, beta_zp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp, gamma_zm, gamma_zp]
elif self.mesh.dim==2:
fxm,fxp,fym,fyp = self.mesh.faceBoundaryInd
gBFxm = self.mesh.gridFx[fxm,:]
gBFxp = self.mesh.gridFx[fxp,:]
gBFym = self.mesh.gridFy[fym,:]
gBFyp = self.mesh.gridFy[fyp,:]
# Setup Mixed B.C (alpha, beta, gamma)
temp_xm, temp_xp = np.ones_like(gBFxm[:,0]), np.ones_like(gBFxp[:,0])
temp_ym, temp_yp = np.ones_like(gBFym[:,1]), np.ones_like(gBFyp[:,1])
alpha_xm, alpha_xp = temp_xm*0., temp_xp*0.
alpha_ym, alpha_yp = temp_ym*0., temp_yp*0.
beta_xm, beta_xp = temp_xm, temp_xp
beta_ym, beta_yp = temp_ym, temp_yp
gamma_xm, gamma_xp = temp_xm*0., temp_xp*0.
gamma_ym, gamma_yp = temp_ym*0., temp_yp*0.
alpha = [alpha_xm, alpha_xp, alpha_ym, alpha_yp]
beta = [beta_xm, beta_xp, beta_ym, beta_yp]
gamma = [gamma_xm, gamma_xp, gamma_ym, gamma_yp]
x_BC, y_BC = getxBCyBC_CC(self.mesh, alpha, beta, gamma)
V = self.Vol
self.Div = V * self.mesh.faceDiv
P_BC, B = self.mesh.getBCProjWF_simple()
M = B*self.mesh.aveCC2F
self.Grad = self.Div.T - P_BC*Utils.sdiag(y_BC)*M
class Problem3D_N(BaseSIPProblem):
_solutionType = 'phiSolution'
_formulation = 'EB' # N potentials means B is on faces
fieldsPair = Fields_N
def __init__(self, mesh, **kwargs):
BaseSIPProblem.__init__(self, mesh, **kwargs)
def getA(self):
"""
Make the A matrix for the cell centered DC resistivity problem
A = G.T MeSigma G
"""
# TODO: this won't work for full anisotropy
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
A = Grad.T * MeSigma * Grad
# Handling Null space of A
A[0,0] = A[0,0] + 1.
return A
def getADeriv(self, u, v, adjoint=False):
"""
Product of the derivative of our system matrix with respect to the model and a vector
"""
MeSigma = self.MeSigma
Grad = self.mesh.nodalGrad
if not adjoint:
return Grad.T*(self.MeSigmaDeriv(Grad*u)*v)
elif adjoint:
return self.MeSigmaDeriv(Grad*u).T * (Grad*v)
def getRHS(self):
"""
RHS for the DC problem
q
"""
RHS = self.getSourceTerm()
return RHS
def getRHSDeriv(self, src, v, adjoint=False):
"""
Derivative of the right hand side with respect to the model
"""
# TODO: add qDeriv for RHS depending on m
# qDeriv = src.evalDeriv(self, adjoint=adjoint)
# return qDeriv
return Zero()
if __name__ == '__main__':
cs = 12.5
hx = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hz = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
sigma = np.ones(mesh.nC)
prob = BaseSIPProblem(mesh, sigma=sigma)
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from SimPEG import Utils, Maps, Mesh, sp, np
from SimPEG.Regularization import BaseRegularization, Simple
class MultiRegularization(Simple):
"""
**MultiRegularization Class**
This is used to regularize the model space
having multiple models [m1, m2, m3, ...] ::
reg = Regularization(mesh)
"""
nModels = None # Number of models
ratios = None # Ratio for different models
crossgrad = False # Use cross gradient or not
betacross = 1.
wx = []
wy = []
wz = []
def __init__(self, mesh, mapping=None, indActive=None, **kwargs):
BaseRegularization.__init__(self, mesh, mapping=mapping, indActive=indActive, **kwargs)
if self.nModels == None:
raise Exception("Put nModels as a initial input!")
if self.ratios == None:
self.ratios = [1. for imodel in range(self.nModels)]
@property
def Wsmall(self):
"""Regularization matrix Wsmall"""
if getattr(self,'_Wsmall', None) is None:
vecs = []
for imodel in range(self.nModels):
vecs.append((self.regmesh.vol*self.alpha_s*self.wght*self.ratios[imodel])**0.5)
self._Wsmall = Utils.sdiag(np.hstack(vecs))
return self._Wsmall
@property
def Wx(self):
"""Regularization matrix Wx"""
if getattr(self, '_Wx', None) is None:
mats = []
for imodel in range(self.nModels):
self.wx.append(Utils.sdiag((self.regmesh.aveCC2Fx * self.regmesh.vol*self.alpha_x*self.ratios[imodel]*(self.regmesh.aveCC2Fx*self.wght))**0.5))
mats.append(self.wx[imodel]*self.regmesh.cellDiffxStencil)
self._Wx = sp.block_diag(mats)
return self._Wx
@property
def Wy(self):
"""Regularization matrix Wy"""
if getattr(self, '_Wy', None) is None:
mats = []
for imodel in range(self.nModels):
self.wy.append(Utils.sdiag((self.regmesh.aveCC2Fy * self.regmesh.vol*self.alpha_y*self.ratios[imodel]*(self.regmesh.aveCC2Fy*self.wght))**0.5))
mats.append(self.wy[imodel]*self.regmesh.cellDiffyStencil)
self._Wy = sp.block_diag(mats)
return self._Wy
@property
def Wz(self):
"""Regularization matrix Wz"""
if getattr(self, '_Wz', None) is None:
mats = []
for imodel in range(self.nModels):
self.wz.append(Utils.sdiag((self.regmesh.aveCC2Fz * self.regmesh.vol*self.alpha_z*self.ratios[imodel]*(self.regmesh.aveCC2Fz*self.wght))**0.5))
mats.append(self.wz[imodel]*self.regmesh.cellDiffzStencil)
self._Wz = sp.block_diag(mats)
return self._Wz
@property
def Wsmooth(self):
"""Full smoothness regularization matrix W"""
if getattr(self, '_Wsmooth', None) is None:
wlist = (self.Wx,)
if self.regmesh.dim > 1:
wlist += (self.Wy,)
if self.regmesh.dim > 2:
wlist += (self.Wz,)
self._Wsmooth = sp.vstack(wlist)
return self._Wsmooth
@property
def W(self):
"""Full regularization matrix W"""
if getattr(self, '_W', None) is None:
wlist = (self.Wsmall, self.Wsmooth)
self._W = sp.vstack(wlist)
return self._W
@Utils.timeIt
def eval(self, m):
return self._evalSmall(m) + self._evalSmooth(m)
@Utils.timeIt
def _evalSmall(self, m):
r = self.Wsmall * ( self.mapping * (m - self.mref) )
return 0.5 * r.dot(r)
@Utils.timeIt
def _evalSmooth(self, m):
if self.mrefInSmooth == True:
r = self.Wsmooth * ( self.mapping * (m - self.mref) )
elif self.mrefInSmooth == False:
r = self.Wsmooth * ( self.mapping * m)
return 0.5 * r.dot(r)
def cross(a,b):
ax, ay, az = a[0], a[1], a[2]
bx, by, bz = b[0], b[1], b[2]
cx = ay*bz - az*by
cy = az*bx - ax*bz
cz = ax*by - ay*bx
return [cx, cy, cz]
# TODO: Implement Cross Gradients..
@Utils.timeIt
def _evalCross(self, m):
if self.crossgrad == False:
return 0.
elif self.crossgrad == True:
M = (self.mapping * m).reshape((self.regmesh.nC, self.nModels), order="F")
ax = self.regmesh.aveFx2CC*self.regmesh.wx[0]*M[:,0]
ay = self.regmesh.aveFy2CC*self.regmesh.wy[0]*M[:,0]
az = self.regmesh.aveFz2CC*self.regmesh.wz[0]*M[:,0]
bx = self.regmesh.aveFx2CC*self.regmesh.wx[1]*M[:,1]
by = self.regmesh.aveFy2CC*self.regmesh.wy[1]*M[:,1]
bz = self.regmesh.aveFz2CC*self.regmesh.wz[1]*M[:,1]
#ab
out_ab = cross([ax, ay, az], [bx, by, bz])
r = np.r_[out_ab[0], out_ab[1], out_ab[2]]*np.sqrt(self.betacross)
if self.nModels == 3:
cx = self.regmesh.aveFx2CC*self.regmesh.wx[1]*M[:,1]
cy = self.regmesh.aveFy2CC*self.regmesh.wy[1]*M[:,1]
cz = self.regmesh.aveFz2CC*self.regmesh.wz[1]*M[:,1]
#ac
out_ac = cross([ax, ay, az], [cx, cy, cz])
#bc
out_bc = cross([bx, by, bz], [cx, cy, cz])
r = np.r_[r, np.hstack(out_ac)*np.sqrt(self.betacross), np.hstack(out_bc)*np.sqrt(self.betacross)]
return 0.5 * r.dot(r)
@Utils.timeIt
def evalDeriv(self, m):
"""
The regularization is:
.. math::
R(m) = \\frac{1}{2}\mathbf{(m-m_\\text{ref})^\\top W^\\top W(m-m_\\text{ref})}
So the derivative is straight forward:
.. math::
R(m) = \mathbf{W^\\top W (m-m_\\text{ref})}
"""
deriv = self._evalSmallDeriv(m) + self._evalSmoothDeriv(m)
if self.crossgrad==True:
deriv += self._evalCrossDeriv(m)
return deriv
@Utils.timeIt
def _evalCrossDeriv(self,m):
r = self.Wsmall * ( self.mapping * (m - self.mref) )
return r.T * ( self.Wsmall * self.mapping.deriv(m - self.mref) )
@Utils.timeIt
def eval2Deriv(self, m, v=None):
"""
Second derivative
:param numpy.array m: geophysical model
:param numpy.array v: vector to multiply
:rtype: scipy.sparse.csr_matrix or numpy.ndarray
:return: WtW or WtW*v
The regularization is:
.. math::
R(m) = \\frac{1}{2}\mathbf{(m-m_\\text{ref})^\\top W^\\top W(m-m_\\text{ref})}
So the second derivative is straight forward:
.. math::
R(m) = \mathbf{W^\\top W}
"""
mD = self.mapping.deriv(m - self.mref)
if v is None:
return mD.T * self.W.T * self.W * mD
return mD.T * ( self.W.T * ( self.W * ( mD * v) ) )
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import SimPEG
import numpy as np
from SimPEG.Utils import Zero, closestPoints
class BaseRx(SimPEG.Survey.BaseTimeRx):
locs = None
rxType = None
knownRxTypes = {
'phi':['phi',None],
'ex':['e','x'],
'ey':['e','y'],
'ez':['e','z'],
'jx':['j','x'],
'jy':['j','y'],
'jz':['j','z'],
}
def __init__(self, locs, times, rxType, **kwargs):
SimPEG.Survey.BaseTimeRx.__init__(self, locs, times, rxType, **kwargs)
@property
def projField(self):
"""Field Type projection (e.g. e b ...)"""
return self.knownRxTypes[self.rxType][0]
def projGLoc(self, f):
"""Grid Location projection (e.g. Ex Fy ...)"""
comp = self.knownRxTypes[self.rxType][1]
if comp is not None:
return f._GLoc(self.rxType) + comp
return f._GLoc(self.rxType)
def getTimeP(self, timesall):
"""
Returns the time projection matrix.
.. note::
This is not stored in memory, but is created on demand.
"""
time_inds = np.in1d(timesall, self.times)
return time_inds
def evalDeriv(self, src, mesh, f, v, adjoint=False):
P = self.getP(mesh, self.projGLoc(f))
if not adjoint:
return P*v
elif adjoint:
return P.T*v
# DC.Rx.Dipole(locs)
class Dipole(BaseRx):
def __init__(self, locsM, locsN, times, rxType = 'phi', **kwargs):
assert locsM.shape == locsN.shape, 'locsM and locsN need to be the same size'
locs = [locsM, locsN]
# We may not need this ...
BaseRx.__init__(self, locs, times, rxType)
@property
def nD(self):
"""Number of data in the receiver."""
# return self.locs[0].shape[0] * len(self.times)
return self.locs[0].shape[0]
@property
def nRx(self):
"""Number of data in the receiver."""
return self.locs[0].shape[0]
# Not sure why ...
# return int(self.locs[0].size / 2)
def getP(self, mesh, Gloc):
if mesh in self._Ps:
return self._Ps[mesh]
P0 = mesh.getInterpolationMat(self.locs[0], Gloc)
P1 = mesh.getInterpolationMat(self.locs[1], Gloc)
P = P0 - P1
if self.storeProjections:
self._Ps[mesh] = P
return P
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import SimPEG
# from SimPEG.EM.Base import BaseEMSurvey
from SimPEG.Utils import Zero, closestPoints, mkvc
import numpy as np
class BaseSrc(SimPEG.Survey.BaseSrc):
current = 1.0
loc = None
def __init__(self, rxList, **kwargs):
SimPEG.Survey.BaseSrc.__init__(self, rxList, **kwargs)
def eval(self, prob):
raise NotImplementedError
def evalDeriv(self, prob):
return Zero()
@property
def nD(self):
"""Number of data"""
return self.vnD.sum()
@property
def vnD(self):
"""Vector number of data"""
return np.array([rx.nD*len(rx.times) for rx in self.rxList])
class Dipole(BaseSrc):
def __init__(self, rxList, locA, locB, **kwargs):
assert locA.shape == locB.shape, 'Shape of locA and locB should be the same'
self.loc = [locA, locB]
BaseSrc.__init__(self, rxList, **kwargs)
def eval(self, prob):
if prob._formulation == 'HJ':
inds = closestPoints(prob.mesh, self.loc, gridLoc='CC')
q = np.zeros(prob.mesh.nC)
q[inds] = self.current * np.r_[1., -1.]
elif prob._formulation == 'EB':
qa = prob.mesh.getInterpolationMat(self.loc[0], locType='N').todense()
qb = -prob.mesh.getInterpolationMat(self.loc[1], locType='N').todense()
q = self.current * mkvc(qa+qb)
return q
class Pole(BaseSrc):
def __init__(self, rxList, loc, **kwargs):
BaseSrc.__init__(self, rxList, loc=loc, **kwargs)
def eval(self, prob):
if prob._formulation == 'HJ':
inds = closestPoints(prob.mesh, self.loc)
q = np.zeros(prob.mesh.nC)
q[inds] = self.current * np.r_[1.]
elif prob._formulation == 'EB':
q = prob.mesh.getInterpolationMat(self.loc, locType='N').todense()
q = self.current * mkvc(q)
return q
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import SimPEG
from SimPEG.EM.Base import BaseEMSurvey
from SimPEG import np, sp, Survey, Utils
from SimPEG.Utils import Zero, Identity
from SimPEG.EM.Static.SIP.SrcSIP import BaseSrc
from SimPEG.EM.Static.SIP.RxSIP import BaseRx
import uuid
class Survey(BaseEMSurvey):
rxPair = BaseRx
srcPair = BaseSrc
times = None
def __init__(self, srcList, **kwargs):
self.srcList = srcList
BaseEMSurvey.__init__(self, srcList, **kwargs)
self.getUniqueTimes()
def getUniqueTimes(self):
time_rx = []
for src in self.srcList:
for rx in src.rxList:
time_rx.append(rx.times)
self.times = np.unique(np.hstack(time_rx))
def dpred(self, m, f=None):
"""
Predicted data.
.. math::
d_\\text{pred} = Pf(m)
"""
return self.prob.forward(m, f=f)
class Data(SimPEG.Survey.Data):
"""Fancy data storage by Src and Rx"""
def __init__(self, survey, v=None):
self.uid = str(uuid.uuid4())
self.survey = survey
self._dataDict = {}
for src in self.survey.srcList:
self._dataDict[src] = {}
for rx in src.rxList:
self._dataDict[src][rx] = {}
if v is not None:
self.fromvec(v)
def _ensureCorrectKey(self, key):
if type(key) is tuple:
if len(key) is not 3:
raise KeyError('Key must be [Src, Rx, tInd]')
if key[0] not in self.survey.srcList:
raise KeyError('Src Key must be a source in the survey.')
if key[1] not in key[0].rxList:
raise KeyError('Rx Key must be a receiver for the source.')
return key
elif isinstance(key, self.survey.srcPair):
if key not in self.survey.srcList:
raise KeyError('Key must be a source in the survey.')
return key, None, None
else:
raise KeyError('Key must be [Src] or [Src,Rx] or [Src, Rx, tInd]')
def __setitem__(self, key, value):
src, rx, t = self._ensureCorrectKey(key)
assert rx is not None, 'set data using [Src, Rx]'
assert isinstance(value, np.ndarray), 'value must by ndarray'
assert value.size == rx.nD, "value must have the same number of data as the source."
self._dataDict[src][rx][t] = Utils.mkvc(value)
def __getitem__(self, key):
src, rx, t = self._ensureCorrectKey(key)
if rx is not None:
if rx not in self._dataDict[src]:
raise Exception('Data for receiver has not yet been set.')
return self._dataDict[src][rx][t]
return np.concatenate([self[src,rx, t] for rx in src.rxList])
def tovec(self):
val = []
for src in self.survey.srcList:
for rx in src.rxList:
for t in rx.times:
val.append(self[src, rx, t])
return np.concatenate(val)
def fromvec(self, v):
v = Utils.mkvc(v)
assert v.size == self.survey.nD, 'v must have the correct number of data.'
indBot, indTop = 0, 0
for src in self.survey.srcList:
for rx in src.rxList:
for t in rx.times:
indTop += rx.nRx
self[src, rx, t] = v[indBot:indTop]
indBot += rx.nRx
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from ProblemSIP import Problem3D_CC, Problem3D_N
from SurveySIP import Survey, Data
import SrcSIP as Src #Pole
import RxSIP as Rx
from Regularization import MultiRegularization
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from SimPEG import np
from SimPEG.EM.Static import DC, IP
def plot_pseudoSection(DCsurvey, axs, stype='dpdp', dtype="appc", clim=None):
"""
Read list of 2D tx-rx location and plot a speudo-section of apparent
resistivity.
Assumes flat topo for now...
Input:
:param d2D, z0
:switch stype -> Either 'pdp' (pole-dipole) | 'dpdp' (dipole-dipole)
:switch dtype=-> Either 'appr' (app. res) | 'appc' (app. con) | 'volt' (potential)
Output:
:figure scatter plot overlayed on image
Edited Feb 17th, 2016
@author: dominiquef
"""
from SimPEG import np
from scipy.interpolate import griddata
import pylab as plt
# Set depth to 0 for now
z0 = 0.
# Pre-allocate
midx = []
midz = []
rho = []
LEG = []
count = 0 # Counter for data
for ii in range(DCsurvey.nSrc):
Tx = DCsurvey.srcList[ii].loc
Rx = DCsurvey.srcList[ii].rxList[0].locs
nD = DCsurvey.srcList[ii].rxList[0].nD
data = DCsurvey.dobs[count:count+nD]
count += nD
# Get distances between each poles A-B-M-N
if stype == 'pdp':
MA = np.abs(Tx[0] - Rx[0][:,0])
NA = np.abs(Tx[0] - Rx[1][:,0])
MN = np.abs(Rx[1][:,0] - Rx[0][:,0])
# Create mid-point location
Cmid = Tx[0]
Pmid = (Rx[0][:,0] + Rx[1][:,0])/2
if DCsurvey.mesh.dim == 2:
zsrc = Tx[1]
elif DCsurvey.mesh.dim ==3:
zsrc = Tx[2]
elif stype == 'dpdp':
MA = np.abs(Tx[0][0] - Rx[0][:,0])
MB = np.abs(Tx[1][0] - Rx[0][:,0])
NA = np.abs(Tx[0][0] - Rx[1][:,0])
NB = np.abs(Tx[1][0] - Rx[1][:,0])
# Create mid-point location
Cmid = (Tx[0][0] + Tx[1][0])/2
Pmid = (Rx[0][:,0] + Rx[1][:,0])/2
if DCsurvey.mesh.dim == 2:
zsrc = (Tx[0][1] + Tx[1][1])/2
elif DCsurvey.mesh.dim ==3:
zsrc = (Tx[0][2] + Tx[1][2])/2
# Change output for dtype
if dtype == 'volt':
rho = np.hstack([rho,data])
else:
# Compute pant leg of apparent rho
if stype == 'pdp':
leg = data * 2*np.pi * MA * ( MA + MN ) / MN
elif stype == 'dpdp':
leg = data * 2*np.pi / ( 1/MA - 1/MB + 1/NB - 1/NA )
LEG.append(1./(2*np.pi) *( 1/MA - 1/MB + 1/NB - 1/NA ))
else:
print """dtype must be 'pdp'(pole-dipole) | 'dpdp' (dipole-dipole) """
break
if dtype == 'appc':
leg = np.log10(abs(1./leg))
rho = np.hstack([rho,leg])
elif dtype == 'appr':
leg = np.log10(abs(leg))
rho = np.hstack([rho,leg])
else:
print """dtype must be 'appr' | 'appc' | 'volt' """
break
midx = np.hstack([midx, ( Cmid + Pmid )/2 ])
if DCsurvey.mesh.dim==3:
midz = np.hstack([midz, -np.abs(Cmid-Pmid)/2 + zsrc ])
elif DCsurvey.mesh.dim==2:
midz = np.hstack([midz, -np.abs(Cmid-Pmid)/2 + zsrc ])
ax = axs
# Grid points
grid_x, grid_z = np.mgrid[np.min(midx):np.max(midx), np.min(midz):np.max(midz)]
grid_rho = griddata(np.c_[midx,midz], rho.T, (grid_x, grid_z), method='linear')
if clim == None:
vmin, vmax = rho.min(), rho.max()
else:
vmin, vmax = clim[0], clim[1]
grid_rho = np.ma.masked_where(np.isnan(grid_rho), grid_rho)
ph = plt.pcolormesh(grid_x[:,0],grid_z[0,:],grid_rho.T, clim=(vmin, vmax), vmin=vmin, vmax=vmax)
cbar = plt.colorbar(format="$10^{%.1f}$",fraction=0.04,orientation="horizontal")
cmin,cmax = cbar.get_clim()
ticks = np.linspace(cmin,cmax,3)
cbar.set_ticks(ticks)
cbar.ax.tick_params(labelsize=10)
if dtype == 'appc':
cbar.set_label("App.Cond",size=12)
elif dtype == 'appr':
cbar.set_label("App.Res.",size=12)
elif dtype == 'volt':
cbar.set_label("Potential (V)",size=12)
# Plot apparent resistivity
ax.scatter(midx,midz,s=10,c=rho.T, vmin =vmin, vmax = vmax, clim=(vmin, vmax))
#ax.set_xticklabels([])
#ax.set_yticklabels([])
plt.gca().set_aspect('equal', adjustable='box')
return ph, LEG
def gen_DCIPsurvey(endl, mesh, stype, a, b, n):
"""
Load in endpoints and survey specifications to generate Tx, Rx location
stations.
Assumes flat topo for now...
Input:
:param endl -> input endpoints [x1, y1, z1, x2, y2, z2]
:object mesh -> SimPEG mesh object
:switch stype -> "dpdp" (dipole-dipole) | "pdp" (pole-dipole) | 'gradient'
: param a, n -> pole seperation, number of rx dipoles per tx
Output:
:param Tx, Rx -> List objects for each tx location
Lines: P1x, P1y, P1z, P2x, P2y, P2z
Created on Wed December 9th, 2015
@author: dominiquef
!! Require clean up to deal with DCsurvey
"""
from SimPEG import np
def xy_2_r(x1,x2,y1,y2):
r = np.sqrt( np.sum((x2 - x1)**2 + (y2 - y1)**2) )
return r
## Evenly distribute electrodes and put on surface
# Mesure survey length and direction
dl_len = xy_2_r(endl[0,0],endl[1,0],endl[0,1],endl[1,1])
dl_x = ( endl[1,0] - endl[0,0] ) / dl_len
dl_y = ( endl[1,1] - endl[0,1] ) / dl_len
nstn = np.floor( dl_len / a )
# Compute discrete pole location along line
stn_x = endl[0,0] + np.array(range(int(nstn)))*dl_x*a
stn_y = endl[0,1] + np.array(range(int(nstn)))*dl_y*a
if mesh.dim==2:
ztop = mesh.vectorNy[-1]
# Create line of P1 locations
M = np.c_[stn_x, np.ones(nstn).T*ztop]
# Create line of P2 locations
N = np.c_[stn_x+a*dl_x, np.ones(nstn).T*ztop]
elif mesh.dim==3:
ztop = mesh.vectorNz[-1]
# Create line of P1 locations
M = np.c_[stn_x, stn_y, np.ones(nstn).T*ztop]
# Create line of P2 locations
N = np.c_[stn_x+a*dl_x, stn_y+a*dl_y, np.ones(nstn).T*ztop]
## Build list of Tx-Rx locations depending on survey type
# Dipole-dipole: Moving tx with [a] spacing -> [AB a MN1 a MN2 ... a MNn]
# Pole-dipole: Moving pole on one end -> [A a MN1 a MN2 ... MNn a B]
SrcList = []
if stype != 'gradient':
for ii in range(0, int(nstn)-1):
if stype == 'dpdp':
tx = np.c_[M[ii,:],N[ii,:]]
elif stype == 'pdp':
tx = np.c_[M[ii,:],M[ii,:]]
# Rx.append(np.c_[M[ii+1:indx,:],N[ii+1:indx,:]])
# Current elctrode seperation
AB = xy_2_r(tx[0,1],endl[1,0],tx[1,1],endl[1,1])
# Number of receivers to fit
nstn = np.min([np.floor( (AB - b) / a ) , n])
# Check if there is enough space, else break the loop
if nstn <= 0:
continue
# Compute discrete pole location along line
stn_x = N[ii,0] + dl_x*b + np.array(range(int(nstn)))*dl_x*a
stn_y = N[ii,1] + dl_y*b + np.array(range(int(nstn)))*dl_y*a
# Create receiver poles
if mesh.dim==3:
# Create line of P1 locations
P1 = np.c_[stn_x, stn_y, np.ones(nstn).T*ztop]
# Create line of P2 locations
P2 = np.c_[stn_x+a*dl_x, stn_y+a*dl_y, np.ones(nstn).T*ztop]
rxClass = DC.Rx.Dipole(P1, P2)
elif mesh.dim==2:
# Create line of P1 locations
P1 = np.c_[stn_x, np.ones(nstn).T*ztop]
# Create line of P2 locations
P2 = np.c_[stn_x+a*dl_x, np.ones(nstn).T*ztop]
rxClass = DC.Rx.Dipole_ky(P1, P2)
if stype == 'dpdp':
srcClass = DC.Src.Dipole([rxClass], M[ii,:],N[ii,:])
elif stype == 'pdp':
srcClass = DC.Src.Pole([rxClass], M[ii,:])
SrcList.append(srcClass)
elif stype == 'gradient':
# Gradient survey only requires Tx at end of line and creates a square
# grid of receivers at in the middle at a pre-set minimum distance
# Get the edge limit of survey area
min_x = endl[0,0] + dl_x * b
min_y = endl[0,1] + dl_y * b
max_x = endl[1,0] - dl_x * b
max_y = endl[1,1] - dl_y * b
box_l = np.sqrt( (min_x - max_x)**2 + (min_y - max_y)**2 )
box_w = box_l/2.
nstn = np.floor( box_l / a )
# Compute discrete pole location along line
stn_x = min_x + np.array(range(int(nstn)))*dl_x*a
stn_y = min_y + np.array(range(int(nstn)))*dl_y*a
# Define number of cross lines
nlin = int(np.floor( box_w / a ))
lind = range(-nlin,nlin+1)
ngrad = nstn * len(lind)
rx = np.zeros([ngrad,6])
for ii in range( len(lind) ):
# Move line in perpendicular direction by dipole spacing
lxx = stn_x - lind[ii]*a*dl_y
lyy = stn_y + lind[ii]*a*dl_x
M = np.c_[ lxx, lyy , np.ones(nstn).T*ztop]
N = np.c_[ lxx+a*dl_x, lyy+a*dl_y, np.ones(nstn).T*ztop]
rx[(ii*nstn):((ii+1)*nstn),:] = np.c_[M,N]
if mesh.dim==3:
rxClass = DC.Rx.Dipole(rx[:,:3], rx[:,3:])
elif mesh.dim==2:
M = M[:,[0,2]]
N = N[:,[0,2]]
rxClass = DC.Rx.Dipole_ky(rx[:,[0,2]], rx[:,[3,5]])
srcClass = DC.Src.Dipole([rxClass], M[0,:], N[-1,:])
SrcList.append(srcClass)
else:
print """stype must be either 'pdp', 'dpdp' or 'gradient'. """
return SrcList
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from StaticUtils import *
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import DC
import IP
import SIP
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import numpy as np
import scipy.sparse as sp
import SimPEG
from SimPEG import Utils
from SimPEG.EM.Utils import omega
from SimPEG.Utils import Zero, Identity
class Fields(SimPEG.Problem.TimeFields):
"""
Fancy Field Storage for a TDEM survey. Only one field type is stored for
each problem, the rest are computed. The fields obejct acts like an array and is indexed by
.. code-block:: python
f = problem.fields(m)
e = f[srcList,'e']
b = f[srcList,'b']
If accessing all sources for a given field, use the :code:`:`
.. code-block:: python
f = problem.fields(m)
e = f[:,'e']
b = f[:,'b']
The array returned will be size (nE or nF, nSrcs :math:`\\times` nFrequencies)
"""
knownFields = {}
dtype = float
def _eDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
if adjoint is True:
return self._eDeriv_u(tInd, src, v, adjoint), self._eDeriv_m(tInd, src, v, adjoint)
return self._eDeriv_u(tInd, src, dun_dm_v) + self._eDeriv_m(tInd, src, v)
def _bDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
if adjoint is True:
return self._bDeriv_u(tInd, src, v, adjoint), self._bDeriv_m(tInd, src, v, adjoint)
return self._bDeriv_u(tInd, src, dun_dm_v) + self._bDeriv_m(tInd, src, v)
class Fields_Derivs(Fields):
knownFields = {
'bDeriv': 'F',
'eDeriv': 'E',
'hDeriv': 'E',
'jDeriv': 'F'
}
class Fields_b(Fields):
"""Fancy Field Storage for a TDEM survey."""
knownFields = {'bSolution': 'F'}
aliasFields = {
'b': ['bSolution', 'F', '_b'],
'e': ['bSolution', 'E', '_e'],
}
def startup(self):
self.MeSigmaI = self.survey.prob.MeSigmaI
self.MeSigmaIDeriv = self.survey.prob.MeSigmaIDeriv
self.edgeCurl = self.survey.prob.mesh.edgeCurl
self.MfMui = self.survey.prob.MfMui
def _b(self, bSolution, srcList, tInd):
return bSolution
def _bDeriv_u(self, tInd, src, dun_dm_v, adjoint=False):
return Identity()*dun_dm_v
def _bDeriv_m(self, tInd, src, v, adjoint=False):
return Zero()
# def _bDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
# if adjoint is True:
# return self._bDeriv_u(tInd, src, v, adjoint), self._bDeriv_m(tInd, src, v, adjoint)
# return self._bDeriv_u(tInd, src, dun_dm_v) + self._bDeriv_m(tInd, src, v)
def _e(self, bSolution, srcList, tInd):
e = self.MeSigmaI * ( self.edgeCurl.T * ( self.MfMui * bSolution ) )
for i, src in enumerate(srcList):
_, S_e = src.eval(self.survey.prob, self.survey.prob.times[tInd])
e[:,i] = e[:,i] - self.MeSigmaI * S_e
return e
def _eDeriv_u(self, tInd, src, dun_dm_v, adjoint = False):
if adjoint is True:
return self.MfMui.T * ( self.edgeCurl * ( self.MeSigmaI.T * dun_dm_v ) )
return self.MeSigmaI * ( self.edgeCurl.T * ( self.MfMui * dun_dm_v ) )
def _eDeriv_m(self, tInd, src, v, adjoint = False):
_, S_e = src.eval(self.survey.prob, self.survey.prob.times[tInd])
bSolution = self[[src],'bSolution',tInd]
_, S_eDeriv = src.evalDeriv(self.survey.prob.times[tInd], self, adjoint=adjoint)
if adjoint is True:
return self.MeSigmaIDeriv(-S_e + self.edgeCurl.T * ( self.MfMui * bSolution ) ).T * v - S_eDeriv(self.MeSigmaI.T * v)
return self.MeSigmaIDeriv(-S_e + self.edgeCurl.T * ( self.MfMui * bSolution)) * v - self.MeSigmaI * S_eDeriv(v)
class Fields_e(Fields):
"""Fancy Field Storage for a TDEM survey."""
knownFields = {'eSolution': 'E'}
aliasFields = {
'e': ['eSolution', 'E', '_e'],
'b': ['eSolution', 'F', '_b'],
}
def startup(self):
self.MeSigmaI = self.survey.prob.MeSigmaI
self.MeSigmaIDeriv = self.survey.prob.MeSigmaIDeriv
self.edgeCurl = self.survey.prob.mesh.edgeCurl
self.MfMui = self.survey.prob.MfMui
def _e(self, eSolution, srcList, tInd):
return eSolution
def _eDeriv_u(self, tInd, src, dun_dm_v, adjoint = False):
return dun_dm_v
def _eDeriv_m(self, tInd, src, v, adjoint = False):
return Zero()
def _b(self, eSolution, srcList, tInd):
raise NotImplementedError
def _bDeriv_u(self, tInd, src, dun_dm_v, adjoint=False):
raise NotImplementedError
def _bDeriv_m(self, tInd, src, v, adjoint=False):
raise NotImplementedError
# def _bDeriv(self, tInd, src, dun_dm_v, v, adjoint=False):
# if adjoint is True:
# return self._bDeriv_u(tInd, src, v, adjoint), self._bDeriv_m(tInd, src, v, adjoint)
# return self._bDeriv_u(tInd, src, dun_dm_v) + self._bDeriv_m(tInd, src, v)
-246
View File
@@ -1,246 +0,0 @@
import SimPEG
from SimPEG import np, Utils
from SimPEG.Utils import Zero, Identity
from scipy.constants import mu_0
from SimPEG.EM.Utils import *
####################################################
# Sources
####################################################
class BaseWaveform(object):
def __init__(self, offTime=0., hasInitialFields=False):
self.offTime = offTime
self.hasInitialFields = hasInitialFields
def _assertMatchesPair(self, pair):
assert (isinstance(self, pair)
), "Waveform object must be an instance of a %s BaseWaveform class."%(pair.__name__)
def eval(self, time):
raise NotImplementedError
def evalDeriv(self, time):
raise NotImplementedError # needed for E-formulation
class StepOffWaveform(BaseWaveform):
def __init__(self, offTime=0.):
BaseWaveform.__init__(self, offTime, hasInitialFields=True)
def eval(self, time):
return 0.
class RawWaveform(BaseWaveform):
def __init__(self, offTime=0.):
BaseWaveform.__init__(self, offTime, hasInitialFields=True)
def eval(self, time):
raise NotImplementedError('RawWaveform has not been implemented, you should write it!')
class TriangularWaveform(BaseWaveform):
def __init__(self, offTime=0.):
BaseWaveform.__init__(self, offTime, hasInitialFields=True)
def eval(self, time):
raise NotImplementedError('TriangularWaveform has not been implemented, you should write it!')
class BaseSrc(SimPEG.Survey.BaseSrc):
# rxPair = Rx
integrate = True
waveformPair = BaseWaveform
@property
def waveform(self):
"A waveform instance is not None"
return getattr(self, '_waveform', None)
@waveform.setter
def waveform(self, val):
if self.waveform is None:
val._assertMatchesPair(self.waveformPair)
self._mapping = val
else:
self._mapping = self.PropMap(val)
def __init__(self, rxList, waveform = StepOffWaveform(), **kwargs):
self.waveform = waveform
SimPEG.Survey.BaseSrc.__init__(self, rxList, **kwargs)
def bInitial(self, prob):
return Zero()
def bInitialDeriv(self, prob, v=None, adjoint=False):
return Zero()
def eInitial(self, prob):
return Zero()
def eInitialDeriv(self, prob, v=None, adjoint=False):
return Zero()
def eval(self, prob, time):
S_m = self.S_m(prob, time)
S_e = self.S_e(prob, time)
return S_m, S_e
def evalDeriv(self, prob, time, v=None, adjoint=False):
if v is not None:
return self.S_mDeriv(prob, time, v, adjoint), self.S_eDeriv(prob, time, v, adjoint)
else:
return lambda v: self.S_mDeriv(prob, time, v, adjoint), lambda v: self.S_eDeriv(prob, time, v, adjoint)
def S_m(self, prob, time):
return Zero()
def S_e(self, prob, time):
return Zero()
def S_mDeriv(self, prob, time, v=None, adjoint=False):
return Zero()
def S_eDeriv(self, prob, time, v=None, adjoint=False):
return Zero()
class MagDipole(BaseSrc):
waveform = None
loc = None
orientation = 'Z'
moment = 1.
mu = mu_0
def __init__(self, rxList, **kwargs):
assert self.orientation in ['X','Y','Z'], "Orientation (right now) doesn't actually do anything! The methods in SrcUtils should take care of this..."
self.integrate = False
BaseSrc.__init__(self, rxList, **kwargs)
def _bfromVectorPotential(self, prob):
if prob._eqLocs is 'FE':
gridX = prob.mesh.gridEx
gridY = prob.mesh.gridEy
gridZ = prob.mesh.gridEz
C = prob.mesh.edgeCurl
elif prob._eqLocs is 'EF':
gridX = prob.mesh.gridFx
gridY = prob.mesh.gridFy
gridZ = prob.mesh.gridFz
C = prob.mesh.edgeCurl.T
if prob.mesh._meshType is 'CYL':
if not prob.mesh.isSymmetric:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
a = MagneticDipoleVectorPotential(self.loc, gridY, 'y', mu=self.mu, moment=self.moment)
else:
srcfct = MagneticDipoleVectorPotential
ax = srcfct(self.loc, gridX, 'x', mu=self.mu, moment=self.moment)
ay = srcfct(self.loc, gridY, 'y', mu=self.mu, moment=self.moment)
az = srcfct(self.loc, gridZ, 'z', mu=self.mu, moment=self.moment)
a = np.concatenate((ax, ay, az))
return C*a
def bInitial(self, prob):
if self.waveform.hasInitialFields is False:
return Zero()
return self._bfromVectorPotential(prob)
def eInitial(self, prob):
if self.waveform.hasInitialFields is False:
return Zero()
b = self.bInitial(prob)
MeSigmaI = prob.MeSigmaI
MfMui = prob.MfMui
C = prob.mesh.edgeCurl
return MeSigmaI * (C.T * (MfMui * b))
def eInitialDeriv(self, prob, v=None, adjoint=False):
if self.waveform.hasInitialFields is False:
return Zero()
b = self.bInitial(prob)
MeSigmaIDeriv = prob.MeSigmaIDeriv
MfMui = prob.MfMui
C = prob.mesh.edgeCurl
S_e = self.S_e(prob, prob.t0)
# S_e doesn't depend on the model
if adjoint:
return MeSigmaIDeriv( -S_e + C.T * ( MfMui * b ) ).T * v
return MeSigmaIDeriv( -S_e + C.T * ( MfMui * b ) ) * v
def S_m(self, prob, time):
if self.waveform.hasInitialFields is False:
raise NotImplementedError
return Zero()
def S_e(self, prob, time):
if self.waveform.hasInitialFields is False:
raise NotImplementedError
return Zero()
class CircularLoop(MagDipole):
waveform = None
loc = None
orientation = 'Z'
radius = None
mu = mu_0
def __init__(self, rxList, **kwargs):
assert self.orientation in ['X','Y','Z'], "Orientation (right now) doesn't actually do anything! The methods in SrcUtils should take care of this..."
self.integrate = False
BaseSrc.__init__(self, rxList, **kwargs)
def _bfromVectorPotential(self, prob):
if prob._eqLocs is 'FE':
gridX = prob.mesh.gridEx
gridY = prob.mesh.gridEy
gridZ = prob.mesh.gridEz
C = prob.mesh.edgeCurl
elif prob._eqLocs is 'EF':
gridX = prob.mesh.gridFx
gridY = prob.mesh.gridFy
gridZ = prob.mesh.gridFz
C = prob.mesh.edgeCurl.T
if prob.mesh._meshType is 'CYL':
if not prob.mesh.isSymmetric:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
a = MagneticLoopVectorPotential(self.loc, gridY, 'y', radius=self.radius, mu=self.mu)
else:
srcfct = MagneticLoopVectorPotential
ax = srcfct(self.loc, gridX, 'x', mu=self.mu, radius=self.radius)
ay = srcfct(self.loc, gridY, 'y', mu=self.mu, radius=self.radius)
az = srcfct(self.loc, gridZ, 'z', mu=self.mu, radius=self.radius)
a = np.concatenate((ax, ay, az))
return C*a
+123 -45
View File
@@ -1,16 +1,10 @@
import SimPEG
from SimPEG import np, Utils
from SimPEG.Utils import Zero, Identity
from scipy.constants import mu_0
from SimPEG import Utils, Survey, np
from SimPEG.Survey import BaseSurvey
from SimPEG.EM.Utils import *
import SrcTDEM as Src
from BaseTDEM import FieldsTDEM
####################################################
# Receivers
####################################################
class Rx(SimPEG.Survey.BaseTimeRx):
class RxTDEM(Survey.BaseTimeRx):
knownRxTypes = {
'ex':['e', 'Ex', 'N'],
@@ -27,7 +21,7 @@ class Rx(SimPEG.Survey.BaseTimeRx):
}
def __init__(self, locs, times, rxType):
SimPEG.Survey.BaseTimeRx.__init__(self, locs, times, rxType)
Survey.BaseTimeRx.__init__(self, locs, times, rxType)
@property
def projField(self):
@@ -62,60 +56,144 @@ class Rx(SimPEG.Survey.BaseTimeRx):
u_part = Utils.mkvc(u[src, self.projField, :])
return P*u_part
def evalDeriv(self, src, mesh, timeMesh, v, adjoint=False):
def evalDeriv(self, src, mesh, timeMesh, u, v, adjoint=False):
P = self.getP(mesh, timeMesh)
if not adjoint:
return P * v #Utils.mkvc(v[src, self.projField+'Deriv', :])
return P * Utils.mkvc(v[src, self.projField, :])
elif adjoint:
# dP_dF_T = P.T * v #[src, self]
# newshape = (len(dP_dF_T)/timeMesh.nN, timeMesh.nN )
return P.T * v #np.reshape(dP_dF_T, newshape, order='F')
return P.T * v[src, self]
####################################################
# Survey
####################################################
class SrcTDEM(Survey.BaseSrc):
rxPair = RxTDEM
radius = None
class Survey(SimPEG.Survey.BaseSurvey):
def getInitialFields(self, mesh):
F0 = getattr(self, '_getInitialFields_' + self.srcType)(mesh)
return F0
def getJs(self, mesh, time):
return None
class SrcTDEM_VMD_MVP(SrcTDEM):
def __init__(self,rxList,loc,waveformType="STEPOFF"):
self.loc = loc
self.waveformType = waveformType
SrcTDEM.__init__(self,rxList)
def getInitialFields(self, mesh):
"""Vertical magnetic dipole, magnetic vector potential"""
if self.waveformType == "STEPOFF":
print ">> Step waveform: Non-zero initial condition"
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticDipoleVectorPotential(self.loc, mesh, 'Ey')
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticDipoleVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'])
else:
raise Exception('Unknown mesh for VMD')
return {"b": mesh.edgeCurl*MVP}
elif self.waveformType == "GENERAL":
print ">> General waveform: Zero initial condition"
return {"b": np.zeros(mesh.nF)}
else:
raise NotImplementedError("Only use STEPOFF or GENERAL")
def getMeS(self, mesh, MfMui):
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticDipoleVectorPotential(self.loc, mesh, 'Ey')
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticDipoleVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'])
else:
raise Exception('Unknown mesh for VMD')
return mesh.edgeCurl.T*MfMui*mesh.edgeCurl*MVP
class SrcTDEM_CircularLoop_MVP(SrcTDEM):
def __init__(self,rxList,loc,radius,waveformType="STEPOFF"):
self.loc = loc
self.radius = radius
self.waveformType = waveformType
SrcTDEM.__init__(self,rxList)
def getInitialFields(self, mesh):
"""Circular Loop, magnetic vector potential"""
if self.waveformType == "STEPOFF":
print ">> Step waveform: Non-zero initial condition"
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticLoopVectorPotential(self.loc, mesh, 'Ey', self.radius)
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticLoopVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'], self.radius)
else:
raise Exception('Unknown mesh for CircularLoop')
return {"b": mesh.edgeCurl*MVP}
elif self.waveformType == "GENERAL":
print ">> General waveform: Zero initial condition"
return {"b": np.zeros(mesh.nF)}
else:
raise NotImplementedError("Only use STEPOFF or GENERAL")
def getMeS(self, mesh, MfMui):
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticLoopVectorPotential(self.loc, mesh, 'Ey', self.radius)
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticLoopVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'], self.radius)
else:
raise Exception('Unknown mesh for CircularLoop')
return mesh.edgeCurl.T*MfMui*mesh.edgeCurl*MVP
class SurveyTDEM(Survey.BaseSurvey):
"""
Time domain electromagnetic survey
docstring for SurveyTDEM
"""
srcPair = Src.BaseSrc
rxPair = Rx
srcPair = SrcTDEM
def __init__(self, srcList, **kwargs):
# Sort these by frequency
self.srcList = srcList
SimPEG.Survey.BaseSurvey.__init__(self, **kwargs)
Survey.BaseSurvey.__init__(self, **kwargs)
def eval(self, u):
data = SimPEG.Survey.Data(self)
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.eval(src, self.mesh, self.prob.timeMesh, u)
return data
def evalDeriv(self, u, v=None, adjoint=False):
raise Exception('Use Receivers to project fields deriv.')
# assert v is not None, 'v to multiply must be provided.'
assert v is not None, 'v to multiply must be provided.'
# if not adjoint:
# data = SimPEG.Survey.Data(self)
# for src in self.srcList:
# for rx in src.rxList:
# data[src, rx] = rx.evalDeriv(src, self.mesh, self.prob.timeMesh, u, v)
# return data
# else:
# f = FieldsTDEM(self.mesh, self)
# for src in self.srcList:
# for rx in src.rxList:
# Ptv = rx.evalDeriv(src, self.mesh, self.prob.timeMesh, u, v, adjoint=True)
# Ptv = Ptv.reshape((-1, self.prob.timeMesh.nN), order='F')
# if rx.projField not in f: # first time we are projecting
# f[src, rx.projField, :] = Ptv
# else: # there are already fields, so let's add to them!
# f[src, rx.projField, :] += Ptv
# return f
if not adjoint:
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.evalDeriv(src, self.mesh, self.prob.timeMesh, u, v)
return data
else:
f = FieldsTDEM(self.mesh, self)
for src in self.srcList:
for rx in src.rxList:
Ptv = rx.evalDeriv(src, self.mesh, self.prob.timeMesh, u, v, adjoint=True)
Ptv = Ptv.reshape((-1, self.prob.timeMesh.nN), order='F')
if rx.projField not in f: # first time we are projecting
f[src, rx.projField, :] = Ptv
else: # there are already fields, so let's add to them!
f[src, rx.projField, :] += Ptv
return f
-553
View File
@@ -1,553 +0,0 @@
from SimPEG import Problem, Utils, np, sp, Solver as SimpegSolver
from SimPEG.EM.Base import BaseEMProblem
from SimPEG.EM.TDEM.SurveyTDEM import Survey as SurveyTDEM
from SimPEG.EM.TDEM.FieldsTDEM import *
from scipy.constants import mu_0
import time
class BaseTDEMProblem(Problem.BaseTimeProblem, BaseEMProblem):
"""
We start with the first order form of Maxwell's equations
"""
surveyPair = SurveyTDEM
fieldsPair = Fields
def __init__(self, mesh, mapping=None, **kwargs):
Problem.BaseTimeProblem.__init__(self, mesh, mapping=mapping, **kwargs)
def fields(self, m):
"""
Solve the forward problem for the fields.
:param numpy.array m: inversion model (nP,)
:rtype numpy.array:
:return F: fields
"""
tic = time.time()
self.curModel = m
F = self.fieldsPair(self.mesh, self.survey)
# set initial fields
F[:,self._fieldType+'Solution',0] = self.getInitialFields()
# timestep to solve forward
if self.verbose: print '%s\nCalculating fields(m)\n%s'%('*'*50,'*'*50)
Ainv = None
for tInd, dt in enumerate(self.timeSteps):
if Ainv is not None and (tInd > 0 and dt != self.timeSteps[tInd - 1]):# keep factors if dt is the same as previous step b/c A will be the same
Ainv.clean()
Ainv = None
if Ainv is None:
A = self.getAdiag(tInd)
if self.verbose: print 'Factoring... (dt = %e)'%dt
Ainv = self.Solver(A, **self.solverOpts)
if self.verbose: print 'Done'
rhs = self.getRHS(tInd+1) # this is on the nodes of the time mesh
Asubdiag = self.getAsubdiag(tInd)
if self.verbose: print (' Solving... (tInd = %i)')% (tInd+1)
sol = Ainv * (rhs - Asubdiag * F[:,self._fieldType+'Solution',tInd]) # taking a step
if self.verbose: print ' Done...'
if sol.ndim == 1:
sol.shape = (sol.size,1)
F[:,self._fieldType+'Solution',tInd+1] = sol
if self.verbose: print '%s\nDone calculating fields(m)\n%s'%('*'*50,'*'*50)
Ainv.clean()
return F
def Jvec(self, m, v, f=None):
"""
Jvec computes the sensitivity times a vector
.. math::
\mathbf{J} \mathbf{v} = \\frac{d\mathbf{P}}{d\mathbf{F}} \left( \\frac{d\mathbf{F}}{d\mathbf{u}} \\frac{d\mathbf{u}}{d\mathbf{m}} + \\frac{\partial\mathbf{F}}{\partial\mathbf{m}} \\right) \mathbf{v}
where
.. math::
\mathbf{A} \\frac{d\mathbf{u}}{d\mathbf{m}} + \\frac{d\mathbf{A}(\mathbf{u})}{d\mathbf{m}} = \\frac{d \mathbf{RHS}}{d \mathbf{m}}
"""
if f is None:
f = self.fields(m)
ftype = self._fieldType + 'Solution' # the thing we solved for
self.curModel = m
# mat to store previous time-step's solution deriv times a vector for each source
# size: nu x nSrc
# this is a bit silly
# if self._fieldType is 'b' or self._fieldType is 'j':
# ifields = np.zeros((self.mesh.nF, len(Srcs)))
# elif self._fieldType is 'e' or self._fieldType is 'h':
# ifields = np.zeros((self.mesh.nE, len(Srcs)))
# for i, src in enumerate(self.survey.srcList):
dun_dm_v = np.hstack([Utils.mkvc(self.getInitialFieldsDeriv(src,v),2) for src in self.survey.srcList]) # can over-write this at each timestep
#
df_dm_v = Fields_Derivs(self.mesh, self.survey) # store the field derivs we need to project to calc full deriv
Adiaginv = None
for tInd, dt in zip(range(self.nT), self.timeSteps):
if Adiaginv is not None and (tInd > 0 and dt != self.timeSteps[tInd - 1]):# keep factors if dt is the same as previous step b/c A will be the same
Adiaginv.clean()
Adiaginv = None
if Adiaginv is None:
A = self.getAdiag(tInd)
Adiaginv = self.Solver(A, **self.solverOpts)
Asubdiag = self.getAsubdiag(tInd)
for i, src in enumerate(self.survey.srcList):
# here, we are lagging by a timestep, so filling in as we go
for projField in set([rx.projField for rx in src.rxList]):
# Seogi: df_duFun?
df_dmFun = getattr(f, '_%sDeriv'%projField, None)
# df_dm_v is dense, but we only need the times at (rx.P.T * ones > 0)
# This should be called rx.footprint
df_dm_v[src, '%sDeriv'%projField , tInd] = df_dmFun(tInd, src, dun_dm_v[:,i], v)
un_src = f[src,ftype,tInd+1]
dA_dm_v = self.getAdiagDeriv(tInd, un_src, v) # cell centered on time mesh
dRHS_dm_v = self.getRHSDeriv(tInd+1, src, v) # on nodes of time mesh
dAsubdiag_dm_v = self.getAsubdiagDeriv(tInd, f[src,ftype,tInd], v)
JRHS = dRHS_dm_v - dAsubdiag_dm_v - dA_dm_v
# step in time and overwrite
if tInd != len(self.timeSteps+1):
dun_dm_v[:,i] = Adiaginv * (JRHS - Asubdiag * dun_dm_v[:,i])
# Seogi: suspcious spot
# Jv = self.dataPair(self.survey)
Jv = []
for src in self.survey.srcList:
for rx in src.rxList:
# Looping over data class append memory as well!!
# Jv[src,rx] = rx.evalDeriv(src, self.mesh, self.timeMesh, Utils.mkvc(df_dm_v[src,'%sDeriv'%rx.projField,:]))
Jv.append(rx.evalDeriv(src, self.mesh, self.timeMesh, Utils.mkvc(df_dm_v[src,'%sDeriv'%rx.projField,:])))
Adiaginv.clean()
# del df_dm_v, dun_dm_v, Asubdiag
# return Utils.mkvc(Jv)
return np.hstack(Jv)
def Jtvec(self, m, v, f=None):
"""
Jvec computes the adjoint of the sensitivity times a vector
.. math::
\mathbf{J}^\\top \mathbf{v} = \left( \\frac{d\mathbf{u}}{d\mathbf{m}} ^ \\top \\frac{d\mathbf{F}}{d\mathbf{u}} ^ \\top + \\frac{\partial\mathbf{F}}{\partial\mathbf{m}} ^ \\top \\right) \\frac{d\mathbf{P}}{d\mathbf{F}} ^ \\top \mathbf{v}
where
.. math::
\\frac{d\mathbf{u}}{d\mathbf{m}} ^\\top \mathbf{A}^\\top + \\frac{d\mathbf{A}(\mathbf{u})}{d\mathbf{m}} ^ \\top = \\frac{d \mathbf{RHS}}{d \mathbf{m}} ^ \\top
"""
if f is None:
f = self.fields(m)
self.curModel = m
ftype = self._fieldType + 'Solution' # the thing we solved for
# Ensure v is a data object.
if not isinstance(v, self.dataPair):
v = self.dataPair(self.survey, v)
df_duT_v = Fields_Derivs(self.mesh, self.survey)
ATinv_df_duT_v = np.zeros((len(self.survey.srcList), len(f[self.survey.srcList[0],ftype,0])), dtype=float) # same size as fields at a single timestep
JTv = np.zeros(m.shape, dtype=float)
# Loop over sources and receivers to create a fields object: PT_v, df_duT_v, df_dmT_v
PT_v = Fields_Derivs(self.mesh, self.survey) # initialize storage for PT_v (don't need to preserve over sources)
for src in self.survey.srcList:
# Looping over initializing field class is appending memory!
# PT_v = Fields_Derivs(self.mesh, self.survey) # initialize storage for PT_v (don't need to preserve over sources)
# initialize size
df_duT_v[src, '%sDeriv'%self._fieldType, :] = np.zeros_like(f[src, self._fieldType, :])
for rx in src.rxList:
print ('_%sDeriv')%(rx.projField)
PT_v[src,'%sDeriv'%rx.projField,:] = rx.evalDeriv(src, self.mesh, self.timeMesh, Utils.mkvc(v[src,rx]), adjoint=True) # this is +=
# PT_v = np.reshape(curPT_v,(len(curPT_v)/self.timeMesh.nN, self.timeMesh.nN), order='F')
df_duTFun = getattr(f, '_%sDeriv'%rx.projField, None)
for tInd in range(self.nT+1):
cur = df_duTFun(tInd, src, None, Utils.mkvc(PT_v[src,'%sDeriv'%rx.projField,tInd]), adjoint=True)
df_duT_v[src, '%sDeriv'%self._fieldType, tInd] = df_duT_v[src, '%sDeriv'%self._fieldType, tInd] + Utils.mkvc(cur[0],2)
JTv = cur[1] + JTv
del PT_v # no longer need this
AdiagTinv = None
# Do the back-solve through time
for tIndP in reversed(range(self.nT + 1)):
tInd = tIndP - 1
if AdiagTinv is not None and (tInd <= self.nT and self.timeSteps[tInd] != self.timeSteps[tInd+1]): # if the previous timestep is the same --> no need to refactor the matrix
AdiagTinv.clean()
AdiagTinv = None
# refactor if we need to
if AdiagTinv is None and tInd > -1:
Adiag = self.getAdiag(tInd)
AdiagTinv = self.Solver(Adiag.T, **self.solverOpts)
dAsubdiag_dm_v = Zero()
if tInd < self.nT - 1:
Asubdiag = self.getAsubdiag(tInd+1)
for isrc, src in enumerate(self.survey.srcList):
# solve against df_duT_v
if tInd >= self.nT-1:
# last timestep (first to be solved)
ATinv_df_duT_v[isrc,:] = AdiagTinv * df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]
elif tInd > -1:
# else:
ATinv_df_duT_v[isrc,:] = AdiagTinv * (Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]) - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]))
else:
# AdiagTinv = I
ATinv_df_duT_v[isrc,:] = Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]) - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:])
# - Utils.mkvc(Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]))
# (Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]) - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]))
if tInd < self.nT - 1:
dAsubdiagT_dm_v = self.getAsubdiagDeriv(tInd+1, f[src,ftype,tInd+1], ATinv_df_duT_v[isrc,:], adjoint = True)
if tInd > -1:
un_src = f[src,ftype,tInd+1]
dAT_dm_v = self.getAdiagDeriv(tInd, un_src, ATinv_df_duT_v[isrc,:], adjoint=True) # cell centered on time mesh
dRHST_dm_v = self.getRHSDeriv(tInd+1, src, ATinv_df_duT_v[isrc,:], adjoint=True) # on nodes of time mesh
JTv = JTv + Utils.mkvc(- dAT_dm_v - dAsubdiag_dm_v + dRHST_dm_v)
else:
# dA_dm_v = self.getInitialFieldsDeriv(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1], adjoint=True)
# print np.linalg.norm(self.getInitialFieldsDeriv(src, df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1], adjoint=True))
# print np.linalg.norm(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1])
# vec = - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]) + Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1])
# dAsubdiagT_dm_v = self.getAsubdiagDeriv(tInd+1, f[src,ftype,tInd+1], Utils.mkvc(ATinv_df_duT_v[isrc,:]), adjoint = True)
dRHST_dm_v = Utils.mkvc(self.getInitialFieldsDeriv(src, Utils.mkvc(ATinv_df_duT_v[isrc,:]) , adjoint=True))
JTv = JTv + Utils.mkvc( -dAsubdiagT_dm_v + dRHST_dm_v) #
# # dAT_dm_v = self.getAdiagDeriv(tInd, un_src, ATinv_df_duT_v[isrc,:], adjoint=True) # cell centered on time mesh
# dRHST_dm_v0 = self.getRHSDeriv(tInd+1, src, ATinv_df_duT_v[isrc,:], adjoint=True) # on nodes of time mesh
# dRHST_dm_v1 = self.getInitialFieldsDeriv( Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]), adjoint=True)
# JTv = JTv + Utils.mkvc(dRHST_dm_v0 + dRHST_dm_v1)
# print 'here'
# inFields = self.getInitialFieldsDeriv(f[src,ftype,tInd+1], Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,tInd+1]), adjoint=True)
# # - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]), adjoint=True)
# print inFields.shape
# JTv = JTv + inFields
# dAsubdiag_dm_v = 0
# Missing the 0 step
# adding du_dm^T * dF_du^T * P^T vfor time 0 (no dRHS_dm_v at time 0)
# Asubdiag = self.getAsubdiag(0)
# for src in self.survey.srcList:
# for projField in set(rx.projField):
# v = AdiagTinv * (Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,0]) - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:]))
# JTv = JTv - Utils.mkvc(self.getAdiagDeriv(0, f[src, ftype, tInd], v, adjoint = True))
# # JTv = JTv + self.getInitialFieldsDeriv(Utils.mkvc(df_duT_v[src,'%sDeriv'%self._fieldType,0] - Asubdiag.T * Utils.mkvc(ATinv_df_duT_v[isrc,:])), adjoint=True)
# del df_duT_v, ATinv_df_duT_v, A, Asubdiag
if AdiagTinv is not None:
AdiagTinv.clean()
return Utils.mkvc(JTv).astype(float)
def getSourceTerm(self, tInd):
Srcs = self.survey.srcList
if self._eqLocs is 'FE':
S_m = np.zeros((self.mesh.nF,len(Srcs)))
S_e = np.zeros((self.mesh.nE,len(Srcs)))
elif self._eqLocs is 'EF':
S_m = np.zeros((self.mesh.nE,len(Srcs)))
S_e = np.zeros((self.mesh.nF,len(Srcs)))
for i, src in enumerate(Srcs):
smi, sei = src.eval(self, self.times[tInd])
S_m[:,i] = S_m[:,i] + smi
S_e[:,i] = S_e[:,i] + sei
return S_m, S_e
def getInitialFields(self):
Srcs = self.survey.srcList
if self._fieldType is 'b' or self._fieldType is 'j':
ifields = np.zeros((self.mesh.nF, len(Srcs)))
elif self._fieldType is 'e' or self._fieldType is 'h':
ifields = np.zeros((self.mesh.nE, len(Srcs)))
for i,src in enumerate(Srcs):
ifields[:,i] = ifields[:,i] + getattr(src, '%sInitial'%self._fieldType, None)(self)
return ifields
def getInitialFieldsDeriv(self, src, v, adjoint=False):
if adjoint is False:
if self._fieldType is 'b' or self._fieldType is 'j':
ifieldsDeriv = np.zeros(self.mesh.nF)
elif self._fieldType is 'e' or self._fieldType is 'h':
ifieldsDeriv = np.zeros(self.mesh.nE)
elif adjoint is True:
ifieldsDeriv = np.zeros(self.mapping.nP)
ifieldsDeriv = Utils.mkvc(getattr(src, '%sInitialDeriv'%self._fieldType, None)(self,v,adjoint)) + ifieldsDeriv
# ifieldsDeriv = Utils.mkvc(getattr(src, '%sInitialDeriv'%self._fieldType, None)(self,v,adjoint)) + ifieldsDeriv
# ifieldsDeriv = self.getAdiagDeriv(None, u, v, adjoint)
# ifieldsDeriv = ifieldsDeriv.sum()
return ifieldsDeriv
##########################################################################################
################################ E-B Formulation #########################################
##########################################################################################
# ------------------------------- Problem_b -------------------------------------------- #
class Problem_b(BaseTDEMProblem):
"""
Starting from the quasi-static E-B formulation of Maxwell's equations (semi-discretized)
.. math::
\mathbf{C} \mathbf{e} + \\frac{\partial \mathbf{b}}{\partial t} = \mathbf{s_m} \\\\
\mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} - \mathbf{M_{\sigma}^e} \mathbf{e} = \mathbf{s_e}
where :math:`\mathbf{s_e}` is an integrated quantity, we eliminate :math:`\mathbf{e}` using
.. math::
\mathbf{e} = \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} - \mathbf{M_{\sigma}^e}^{-1} \mathbf{s_e}
to obtain a second order semi-discretized system in :math:`\mathbf{b}`
.. math::
\mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} + \\frac{\partial \mathbf{b}}{\partial t} = \mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{s_e} + \mathbf{s_m}
and moving everything except the time derivative to the rhs gives
.. math::
\\frac{\partial \mathbf{b}}{\partial t} = -\mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b} + \mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{s_e} + \mathbf{s_m}
For the time discretization, we use backward euler. To solve for the :math:`n+1`th time step, we have
.. math::
\\frac{\mathbf{b}^{n+1} - \mathbf{b}^{n}}{\mathbf{dt}} = -\mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f} \mathbf{b}^{n+1} + \mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{s_e}^{n+1} + \mathbf{s_m}^{n+1}
re-arranging to put :math:`\mathbf{b}^{n+1}` on the left hand side gives
.. math::
(\mathbf{I} + \mathbf{dt} \mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f}) \mathbf{b}^{n+1} = \mathbf{b}^{n} + \mathbf{dt}(\mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{s_e}^{n+1} + \mathbf{s_m}^{n+1})
:param Mesh mesh: mesh
:param Mapping mapping: mapping
"""
_fieldType = 'b'
_eqLocs = 'FE'
fieldsPair = Fields_b
surveyPair = SurveyTDEM
def __init__(self, mesh, mapping=None, **kwargs):
BaseTDEMProblem.__init__(self, mesh, mapping=mapping, **kwargs)
def getAdiag(self, tInd):
"""
System matrix at a given time index
.. math::
(\mathbf{I} + \mathbf{dt} \mathbf{C} \mathbf{M_{\sigma}^e}^{-1} \mathbf{C}^{\\top} \mathbf{M_{\mu^{-1}}^f})
"""
assert tInd >= 0 and tInd < self.nT
dt = self.timeSteps[tInd]
C = self.mesh.edgeCurl
MeSigmaI = self.MeSigmaI
MfMui = self.MfMui
I = Utils.speye(self.mesh.nF)
A = 1./dt * I + ( C * ( MeSigmaI * (C.T * MfMui ) ) )
if self._makeASymmetric is True:
return MfMui.T * A
return A
def getAdiagDeriv(self, tInd, u, v, adjoint=False):
C = self.mesh.edgeCurl
MeSigmaIDeriv = lambda x: self.MeSigmaIDeriv(x)
MfMui = self.MfMui
if adjoint:
if self._makeASymmetric is True:
v = MfMui * v
return MeSigmaIDeriv(C.T * ( MfMui * u )).T * ( C.T * v )
ADeriv = ( C * ( MeSigmaIDeriv(C.T * ( MfMui * u )) * v ) )
if self._makeASymmetric is True:
return MfMui.T * ADeriv
return ADeriv
def getAsubdiag(self, tInd):
dt = self.timeSteps[tInd]
MfMui = self.MfMui
Asubdiag = - 1./dt * sp.eye(self.mesh.nF)
if self._makeASymmetric is True:
return MfMui.T * Asubdiag
return Asubdiag
def getAsubdiagDeriv(self, tInd, u, v, adjoint=False):
return Zero() * v
def getRHS(self, tInd):
C = self.mesh.edgeCurl
MeSigmaI = self.MeSigmaI
MfMui = self.MfMui
S_m, S_e = self.getSourceTerm(tInd)
rhs = (C * (MeSigmaI * S_e) + S_m)
if self._makeASymmetric is True:
return MfMui.T * rhs
return rhs
def getRHSDeriv(self, tInd, src, v, adjoint=False):
C = self.mesh.edgeCurl
MeSigmaI = self.MeSigmaI
MeSigmaIDeriv = lambda u: self.MeSigmaIDeriv(u)
MfMui = self.MfMui
_, S_e = src.eval(tInd, self)
S_mDeriv, S_eDeriv = src.evalDeriv(self.times[tInd], self, adjoint=adjoint)
if adjoint:
if self._makeASymmetric is True:
v = self.MfMui * v
if isinstance(S_e, Utils.Zero):
MeSigmaIDerivT_v = Utils.Zero()
else:
MeSigmaIDerivT_v = MeSigmaIDeriv(S_e).T * v
RHSDeriv = MeSigmaIDerivT_v + S_eDeriv( MeSigmaI.T * ( C.T * v ) ) + S_mDeriv(v)
return RHSDeriv
if isinstance(S_e, Utils.Zero):
MeSigmaIDeriv_v = Utils.Zero()
else:
MeSigmaIDeriv_v = MeSigmaIDeriv(S_e) * v
RHSDeriv = (C * (MeSigmaIDeriv_v + MeSigmaI * S_eDeriv(v) + S_mDeriv(v)))
if self._makeASymmetric is True:
return self.MfMui.T * RHSDeriv
return RHSDeriv
# ------------------------------- Problem_e -------------------------------------------- #
class Problem_e(BaseTDEMProblem):
_fieldType = 'e'
_eqLocs = 'FE'
fieldsPair = Fields_e
surveyPair = SurveyTDEM
def __init__(self, mesh, mapping=None, **kwargs):
BaseTDEMProblem.__init__(self, mesh, mapping=mapping, **kwargs)
def getAdiag(self, tInd):
"""
System matrix at a given time index
"""
assert tInd >= 0 and tInd < self.nT
dt = self.timeSteps[tInd]
C = self.mesh.edgeCurl
MfMui = self.MfMui
MeSigma = self.MeSigma
return C.T * ( MfMui * C ) + 1./dt * MeSigma
def getAdiagDeriv(self, tInd, u, v, adjoint=False):
assert tInd >= 0 and tInd < self.nT
dt = self.timeSteps[tInd]
C = self.mesh.edgeCurl
MfMui = self.MfMui
MeSigmaDeriv = self.MeSigmaDeriv(u)
if adjoint:
return 1./dt * MeSigmaDeriv.T * v
return 1./dt * MeSigmaDeriv * v
def getAsubdiag(self, tInd):
assert tInd >= 0 and tInd < self.nT
dt = self.timeSteps[tInd]
return - 1./dt * self.MeSigma
def getAsubdiagDeriv(self, tInd, u, v, adjoint=False):
dt = self.timeSteps[tInd]
if adjoint:
return - 1./dt * self.MeSigmaDeriv(u).T * v
return - 1./dt * self.MeSigmaDeriv(u) * v
def getRHS(self, tInd):
return Zero()
def getRHSDeriv(self, tInd, src, v, adjoint=False):
return Zero()
+3 -3
View File
@@ -1,3 +1,3 @@
from TDEM import BaseTDEMProblem, Problem_b, Problem_e
from FieldsTDEM import Fields, Fields_b
from SurveyTDEM import Survey, Src, Rx
from SurveyTDEM import * #SurveyTDEM, RxTDEM, SrcTDEM
from BaseTDEM import BaseTDEMProblem, FieldsTDEM
from TDEM_b import ProblemTDEM_b
-199
View File
@@ -1,199 +0,0 @@
from SimPEG import Utils, Survey, np
from SimPEG.Survey import BaseSurvey
from SimPEG.EM.Utils import *
from BaseTDEM import FieldsTDEM
import SrcTDEM as Src
class RxTDEM(Survey.BaseTimeRx):
knownRxTypes = {
'ex':['e', 'Ex', 'N'],
'ey':['e', 'Ey', 'N'],
'ez':['e', 'Ez', 'N'],
'bx':['b', 'Fx', 'N'],
'by':['b', 'Fy', 'N'],
'bz':['b', 'Fz', 'N'],
'dbxdt':['b', 'Fx', 'CC'],
'dbydt':['b', 'Fy', 'CC'],
'dbzdt':['b', 'Fz', 'CC'],
}
def __init__(self, locs, times, rxType):
Survey.BaseTimeRx.__init__(self, locs, times, rxType)
@property
def projField(self):
"""Field Type projection (e.g. e b ...)"""
return self.knownRxTypes[self.rxType][0]
@property
def projGLoc(self):
"""Grid Location projection (e.g. Ex Fy ...)"""
return self.knownRxTypes[self.rxType][1]
@property
def projTLoc(self):
"""Time Location projection (e.g. CC N)"""
return self.knownRxTypes[self.rxType][2]
def getTimeP(self, timeMesh):
"""
Returns the time projection matrix.
.. note::
This is not stored in memory, but is created on demand.
"""
if self.rxType in ['dbxdt','dbydt','dbzdt']:
return timeMesh.getInterpolationMat(self.times, self.projTLoc)*timeMesh.faceDiv
else:
return timeMesh.getInterpolationMat(self.times, self.projTLoc)
def eval(self, src, mesh, timeMesh, u):
P = self.getP(mesh, timeMesh)
u_part = Utils.mkvc(u[src, self.projField, :])
return P*u_part
def evalDeriv(self, src, mesh, timeMesh, u, v, adjoint=False):
P = self.getP(mesh, timeMesh)
if not adjoint:
return P * Utils.mkvc(v[src, self.projField, :])
elif adjoint:
return P.T * v[src, self]
class SrcTDEM(Survey.BaseSrc):
rxPair = RxTDEM
radius = None
def getInitialFields(self, mesh):
F0 = getattr(self, '_getInitialFields_' + self.srcType)(mesh)
return F0
def getJs(self, mesh, time):
return None
class SrcTDEM_VMD_MVP(SrcTDEM):
def __init__(self,rxList,loc,waveformType="STEPOFF"):
self.loc = loc
self.waveformType = waveformType
SrcTDEM.__init__(self,rxList)
def getInitialFields(self, mesh):
"""Vertical magnetic dipole, magnetic vector potential"""
if self.waveformType == "STEPOFF":
print ">> Step waveform: Non-zero initial condition"
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticDipoleVectorPotential(self.loc, mesh, 'Ey')
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticDipoleVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'])
else:
raise Exception('Unknown mesh for VMD')
return {"b": mesh.edgeCurl*MVP}
elif self.waveformType == "GENERAL":
print ">> General waveform: Zero initial condition"
return {"b": np.zeros(mesh.nF)}
else:
raise NotImplementedError("Only use STEPOFF or GENERAL")
def getMeS(self, mesh, MfMui):
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticDipoleVectorPotential(self.loc, mesh, 'Ey')
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticDipoleVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'])
else:
raise Exception('Unknown mesh for VMD')
return mesh.edgeCurl.T*MfMui*mesh.edgeCurl*MVP
class SrcTDEM_CircularLoop_MVP(SrcTDEM):
def __init__(self,rxList,loc,radius,waveformType="STEPOFF"):
self.loc = loc
self.radius = radius
self.waveformType = waveformType
SrcTDEM.__init__(self,rxList)
def getInitialFields(self, mesh):
"""Circular Loop, magnetic vector potential"""
if self.waveformType == "STEPOFF":
print ">> Step waveform: Non-zero initial condition"
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticLoopVectorPotential(self.loc, mesh, 'Ey', self.radius)
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticLoopVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'], self.radius)
else:
raise Exception('Unknown mesh for CircularLoop')
return {"b": mesh.edgeCurl*MVP}
elif self.waveformType == "GENERAL":
print ">> General waveform: Zero initial condition"
return {"b": np.zeros(mesh.nF)}
else:
raise NotImplementedError("Only use STEPOFF or GENERAL")
def getMeS(self, mesh, MfMui):
if mesh._meshType is 'CYL':
if mesh.isSymmetric:
MVP = MagneticLoopVectorPotential(self.loc, mesh, 'Ey', self.radius)
else:
raise NotImplementedError('Non-symmetric cyl mesh not implemented yet!')
elif mesh._meshType is 'TENSOR':
MVP = MagneticLoopVectorPotential(self.loc, mesh, ['Ex','Ey','Ez'], self.radius)
else:
raise Exception('Unknown mesh for CircularLoop')
return mesh.edgeCurl.T*MfMui*mesh.edgeCurl*MVP
class SurveyTDEM(Survey.BaseSurvey):
"""
docstring for SurveyTDEM
"""
srcPair = SrcTDEM
def __init__(self, srcList, **kwargs):
# Sort these by frequency
self.srcList = srcList
Survey.BaseSurvey.__init__(self, **kwargs)
def projectFields(self, u):
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.projectFields(src, self.mesh, self.prob.timeMesh, u)
return data
def projectFieldsDeriv(self, u, v=None, adjoint=False):
assert v is not None, 'v to multiply must be provided.'
if not adjoint:
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.projectFieldsDeriv(src, self.mesh, self.prob.timeMesh, u, v)
return data
else:
f = FieldsTDEM(self.mesh, self)
for src in self.srcList:
for rx in src.rxList:
Ptv = rx.projectFieldsDeriv(src, self.mesh, self.prob.timeMesh, u, v, adjoint=True)
Ptv = Ptv.reshape((-1, self.prob.timeMesh.nN), order='F')
if rx.projField not in f: # first time we are projecting
f[src, rx.projField, :] = Ptv
else: # there are already fields, so let's add to them!
f[src, rx.projField, :] += Ptv
return f
-3
View File
@@ -1,3 +0,0 @@
from SurveyTDEM import * #SurveyTDEM, RxTDEM, SrcTDEM
from BaseTDEM import BaseTDEMProblem, FieldsTDEM
from TDEM_b import ProblemTDEM_b
+29 -15
View File
@@ -26,55 +26,69 @@ def getFDEMProblem(fdemType, comp, SrcList, freq, useMu=False, verbose=False):
x = np.array([np.linspace(-5.*cs,-2.*cs,3),np.linspace(5.*cs,2.*cs,3)]) + cs/4. #don't sample right by the source, slightly off alignment from either staggered grid
XYZ = Utils.ndgrid(x,x,np.linspace(-2.*cs,2.*cs,5))
Rx0 = getattr(EM.FDEM.Rx, 'Point_' + comp[0])
if comp[2] == 'r':
real_or_imag = 'real'
elif comp[2] == 'i':
real_or_imag = 'imag'
rx0 = Rx0(XYZ, comp[1], 'imag')
Rx0 = EM.FDEM.Rx(XYZ, comp)
Src = []
for SrcType in SrcList:
if SrcType is 'MagDipole':
Src.append(EM.FDEM.Src.MagDipole([rx0], freq=freq, loc=np.r_[0.,0.,0.]))
Src.append(EM.FDEM.Src.MagDipole([Rx0], freq=freq, loc=np.r_[0.,0.,0.]))
elif SrcType is 'MagDipole_Bfield':
Src.append(EM.FDEM.Src.MagDipole_Bfield([rx0], freq=freq, loc=np.r_[0.,0.,0.]))
Src.append(EM.FDEM.Src.MagDipole_Bfield([Rx0], freq=freq, loc=np.r_[0.,0.,0.]))
elif SrcType is 'CircularLoop':
Src.append(EM.FDEM.Src.CircularLoop([rx0], freq=freq, loc=np.r_[0.,0.,0.]))
Src.append(EM.FDEM.Src.CircularLoop([Rx0], freq=freq, loc=np.r_[0.,0.,0.]))
elif SrcType is 'RawVec':
if fdemType is 'e' or fdemType is 'b':
S_m = np.zeros(mesh.nF)
S_e = np.zeros(mesh.nE)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1e-3
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1e-3
Src.append(EM.FDEM.Src.RawVec([rx0], freq, S_m, mesh.getEdgeInnerProduct()*S_e))
Src.append(EM.FDEM.Src.RawVec([Rx0], freq, S_m, S_e, integrate=True))
elif fdemType is 'h' or fdemType is 'j':
S_m = np.zeros(mesh.nE)
S_e = np.zeros(mesh.nF)
S_m[Utils.closestPoints(mesh,[0.,0.,0.],'Ez') + np.sum(mesh.vnE[:1])] = 1e-3
S_e[Utils.closestPoints(mesh,[0.,0.,0.],'Fz') + np.sum(mesh.vnF[:1])] = 1e-3
Src.append(EM.FDEM.Src.RawVec([rx0], freq, mesh.getEdgeInnerProduct()*S_m, S_e))
Src.append(EM.FDEM.Src.RawVec([Rx0], freq, S_m, S_e, integrate=True))
elif SrcType is 'PrimSec':
primSrc = EM.FDEM.Src.MagDipole([], freq, np.r_[0.,0.,0.])
primarySurvey = EM.FDEM.Survey([primSrc])
primaryProblem = EM.FDEM.Problem_e(mesh,mapping=mapping)
mPrimary = np.ones(mapping.nP)*np.log(CONDUCTIVITY)
Src.append(EM.FDEM.Src.PrimSec([Rx0], freq, mPrimary, prob=primaryProblem, survey=primarySurvey))
elif SrcType is 'PrimSecCyl':
hx = [(cs,ncx + 2), (cs,npad + 2,1.3)]
hz = [(cs,npad + 2 ,-1.3), (cs,ncz+2), (cs,npad+2,1.3)]
primmesh = Mesh.CylMesh([hx,1,hz], '00C')
primSrc = EM.FDEM.Src.MagDipole([], freq, np.r_[0.,0.,0.])
primarySurvey = EM.FDEM.Survey([primSrc])
primaryProblem = EM.FDEM.Problem_e(primmesh)
mPrimary = np.ones(primmesh.nC)*CONDUCTIVITY
Src.append(EM.FDEM.Src.PrimSec([Rx0], freq, mPrimary, prob=primaryProblem, survey=primarySurvey))
if verbose:
print ' Fetching %s problem' % (fdemType)
if fdemType == 'e':
survey = EM.FDEM.Survey(Src)
prb = EM.FDEM.Problem3D_e(mesh, mapping=mapping)
prb = EM.FDEM.Problem_e(mesh, mapping=mapping)
elif fdemType == 'b':
survey = EM.FDEM.Survey(Src)
prb = EM.FDEM.Problem3D_b(mesh, mapping=mapping)
prb = EM.FDEM.Problem_b(mesh, mapping=mapping)
elif fdemType == 'j':
survey = EM.FDEM.Survey(Src)
prb = EM.FDEM.Problem3D_j(mesh, mapping=mapping)
prb = EM.FDEM.Problem_j(mesh, mapping=mapping)
elif fdemType == 'h':
survey = EM.FDEM.Survey(Src)
prb = EM.FDEM.Problem3D_h(mesh, mapping=mapping)
prb = EM.FDEM.Problem_h(mesh, mapping=mapping)
else:
raise NotImplementedError()
-1
View File
@@ -1,6 +1,5 @@
import TDEM
import FDEM
import Static
import Base
import Analytics
import Utils
+32 -53
View File
@@ -2,27 +2,19 @@ from SimPEG import Mesh, Utils, np, sp
import SimPEG.DCIP as DC
import time
def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', unitType='appConductivity', plotIt=True):
def run(loc=None, sig=None, radi=None, param=None, stype='dpdp', plotIt=True):
"""
DC Forward Simulation
=====================
Forward model two conductive spheres in a half-space and plot a
pseudo-section. Assumes an infinite line source and measures along the
center of the spheres.
Forward model conductive spheres in a half-space and plot a pseudo-section
INPUT:
loc = Location of spheres [[x1,y1,z1],[x2,y2,z2]]
radi = Radius of spheres [r1,r2]
param = Conductivity of background and two spheres [m0,m1,m2]
surveyType = survey type 'pole-dipole' or 'dipole-dipole'
unitType = Data type "appResistivity" | "appConductivity" | "volt"
Created by @fourndo
Created by @fourndo on Mon Feb 01 19:28:06 2016
"""
assert surveyType in ['pole-dipole', 'dipole-dipole'], "Source type (surveyType) must be pdp or dpdp (pole dipole or dipole dipole)"
assert unitType in ['appResistivity', 'appConductivity', 'volt'], "Unit type (unitType) must be appResistivity or appConductivity or volt (potential)"
assert stype in ['pdp', 'dpdp'], "Source type (stype) must be pdp or dpdp (pole dipole or dipole dipole)"
if loc is None:
loc = np.c_[[-50.,0.,-50.],[50.,0.,-50.]]
@@ -35,6 +27,7 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
# First we need to create a mesh and a model.
# This is our mesh
dx = 5.
@@ -59,10 +52,14 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
# Get index of the center
indy = int(mesh.nCy/2)
# Plot the model for reference
# Define core mesh extent
xlim = 200
zlim = 100
zlim = 125
# Specify the survey type: "pdp" | "dpdp"
# Then specify the end points of the survey. Let's keep it simple for now and survey above the anomalies, top of the mesh
ends = [(-175,0),(175,0)]
@@ -73,20 +70,19 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
locs = np.c_[mesh.gridCC[indx,0],mesh.gridCC[indx,1],np.ones(2).T*mesh.vectorNz[-1]]
# We will handle the geometry of the survey for you and create all the combination of tx-rx along line
# [Tx, Rx] = DC.gen_DCIPsurvey(locs, mesh, surveyType, param[0], param[1], param[2])
survey, Tx, Rx = DC.gen_DCIPsurvey(locs, mesh, surveyType, param[0], param[1], param[2])
# [Tx, Rx] = DC.gen_DCIPsurvey(locs, mesh, stype, param[0], param[1], param[2])
survey, Tx, Rx = DC.gen_DCIPsurvey(locs, mesh, stype, param[0], param[1], param[2])
# Define some global geometry
dl_len = np.sqrt( np.sum((locs[0,:] - locs[1,:])**2) )
dl_x = ( Tx[-1][0,1] - Tx[0][0,0] ) / dl_len
dl_y = ( Tx[-1][1,1] - Tx[0][1,0] ) / dl_len
#azm = np.arctan(dl_y/dl_x)
azm = np.arctan(dl_y/dl_x)
#Set boundary conditions
mesh.setCellGradBC('neumann')
# Define the linear system needed for the DC problem. We assume an infitite
# line source for simplicity.
# Define the differential operators needed for the DC problem
Div = mesh.faceDiv
Grad = mesh.cellGrad
Msig = Utils.sdiag(1./(mesh.aveF2CC.T*(1./model)))
@@ -118,8 +114,8 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
rxloc_N = np.asarray(Rx[ii][:,3:])
# For usual cases 'dipole-dipole' or "gradient"
if surveyType == 'pole-dipole':
# For usual cases "dpdp" or "gradient"
if stype == 'pdp':
# Create an "inifinity" pole
tx = np.squeeze(Tx[ii][:,0:1])
tinf = tx + np.array([dl_x,dl_y,0])*dl_len*2
@@ -149,23 +145,16 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
print 'Forward completed'
# Let's just convert the 3D format into 2D (distance along line) and plot
survey2D = DC.convertObs_DC3D_to_2D(survey, np.ones(survey.nSrc) , 'Xloc')
# [Tx2d, Rx2d] = DC.convertObs_DC3D_to_2D(survey, np.ones(survey.nSrc))
survey2D = DC.convertObs_DC3D_to_2D(survey, np.ones(survey.nSrc))
survey2D.dobs =np.hstack(data)
# Here is an example for the first tx-rx array
if plotIt:
import matplotlib.pyplot as plt
fig = plt.figure(figsize=(7,7))
fig = plt.figure()
ax = plt.subplot(2,1,1, aspect='equal')
# Plot the location of the spheres for reference
circle1=plt.Circle((loc[0,0], loc[2,0]), radi[0], color='w', fill=False, lw=3)
circle2=plt.Circle((loc[0,1], loc[2,1]), radi[1], color='k', fill=False, lw=3)
ax.add_artist(circle1)
ax.add_artist(circle2)
dat = mesh.plotSlice(np.log10(model), ax = ax, normal = 'Y',
ind = indy,grid=True, clim = np.log10([sig.min(),sig.max()]))
ax.set_title('3-D model')
mesh.plotSlice(np.log10(model), ax =ax, normal = 'Y', ind = indy,grid=True)
ax.set_title('E-W section at '+str(mesh.vectorCCy[indy])+' m')
plt.gca().set_aspect('equal', adjustable='box')
plt.scatter(Tx[0][0,:],Tx[0][2,:],s=40,c='g', marker='v')
@@ -174,32 +163,22 @@ def run(loc=None, sig=None, radi=None, param=None, surveyType='dipole-dipole', u
plt.ylim([-zlim,mesh.vectorNz[-1]+dx])
pos = ax.get_position()
ax.set_position([pos.x0 , pos.y0 + 0.025 , pos.width, pos.height])
pos = ax.get_position()
cbarax = fig.add_axes([pos.x0 , pos.y0 + 0.025 , pos.width, pos.height * 0.04]) ## the parameters are the specified position you set
cb = fig.colorbar(dat[0],cax=cbarax, orientation="horizontal",
ax = ax, ticks=np.linspace(np.log10(sig.min()),
np.log10(sig.max()), 3), format="$10^{%.1f}$")
cb.set_label("Conductivity (S/m)",size=12)
cb.ax.tick_params(labelsize=12)
# Second plot for the predicted apparent resistivity data
ax2 = plt.subplot(2,1,2, aspect='equal')
ax = plt.subplot(2,1,2, aspect='equal')
# Plot the location of the spheres for reference
circle1=plt.Circle((loc[0,0], loc[2,0]), radi[0], color='w', fill=False, lw=3)
circle2=plt.Circle((loc[0,1], loc[2,1]), radi[1], color='k', fill=False, lw=3)
ax2.add_artist(circle1)
ax2.add_artist(circle2)
circle1=plt.Circle((loc[0,0]-Tx[0][0,0],loc[2,0]),radi[0],color='w',fill=False, lw=3)
circle2=plt.Circle((loc[0,1]-Tx[0][0,0],loc[2,1]),radi[1],color='k',fill=False, lw=3)
ax.add_artist(circle1)
ax.add_artist(circle2)
# Add the speudo section
dat = DC.plot_pseudoSection(survey2D, ax2, surveyType=surveyType, unitType=unitType) # plt.scatter(Tx2d[0][:],Tx[0][2,:],s=40,c='g', marker='v')
DC.plot_pseudoSection(survey2D,ax,stype)
# plt.scatter(Tx2d[0][:],Tx[0][2,:],s=40,c='g', marker='v')
# plt.scatter(Rx2d[0][:],Rx[0][:,2::3],s=40,c='y')
# plt.plot(np.r_[Tx2d[0][0],Rx2d[-1][-1,-1]],np.ones(2)*mesh.vectorNz[-1], color='k')
ax2.set_title('Apparent Conductivity data')
plt.ylim([-zlim,mesh.vectorNz[-1]+dx])
plt.show()
return fig, ax
+5 -4
View File
@@ -42,16 +42,17 @@ def run(plotIt=True):
ax.grid(color='k', alpha=0.5, linestyle='dashed', linewidth=0.5)
rxOffset=10.
bzi = EM.FDEM.Rx.Point_b(np.array([[rxOffset, 0., 1e-3]]), orientation='z', component='imag')
rxOffset=10.
bzi = EM.FDEM.Rx(np.array([[rxOffset, 0., 1e-3]]), 'bzi')
freqs = np.logspace(1,3,10)
srcLoc = np.array([0., 0., 10.])
srcList = [EM.FDEM.Src.MagDipole([bzi],freq, srcLoc,orientation='Z') for freq in freqs]
srcList = []
[srcList.append(EM.FDEM.Src.MagDipole([bzi],freq, srcLoc,orientation='Z')) for freq in freqs]
survey = EM.FDEM.Survey(srcList)
prb = EM.FDEM.Problem3D_b(mesh, mapping=mapping)
prb = EM.FDEM.Problem_b(mesh, mapping=mapping)
try:
from pymatsolver import MumpsSolver
@@ -1,275 +0,0 @@
from SimPEG import *
from SimPEG.EM import FDEM, Analytics, mu_0
import time
try:
from pymatsolver import MumpsSolver
solver = MumpsSolver
except Exception:
solver = SolverLU
pass
def run(plotIt=True):
"""
EM: Schenkel and Morrison Casing Model
======================================
Here we create and run a FDEM forward simulation to calculate the vertical
current inside a steel-cased. The model is based on the Schenkel and
Morrison Casing Model, and the results are used in a 2016 SEG abstract by
Yang et al.
- Schenkel, C.J., and H.F. Morrison, 1990, Effects of well casing on potential field measurements using downhole current sources: Geophysical prospecting, 38, 663-686.
The model consists of:
- Air: Conductivity 1e-8 S/m, above z = 0
- Background: conductivity 1e-2 S/m, below z = 0
- Casing: conductivity 1e6 S/m
- 300m long
- radius of 0.1m
- thickness of 6e-3m
Inside the casing, we take the same conductivity as the background.
We are using an EM code to simulate DC, so we use frequency low enough
that the skin depth inside the casing is longer than the casing length (f
= 1e-6 Hz). The plot produced is of the current inside the casing.
These results are shown in the SEG abstract by Yang et al., 2016: 3D DC
resistivity modeling of steel casing for reservoir monitoring using
equivalent resistor network. The solver used to produce these results and
achieve the CPU time of ~30s is Mumps, which was installed using pymatsolver_
.. _pymatsolver: https://github.com/rowanc1/pymatsolver
This example is on figshare: https://dx.doi.org/10.6084/m9.figshare.3126961.v1
If you would use this example for a code comparison, or build upon it, a
citation would be much appreciated!
"""
if plotIt:
import matplotlib.pylab as plt
# ------------------ MODEL ------------------
sigmaair = 1e-8 # air
sigmaback = 1e-2 # background
sigmacasing = 1e6 # casing
sigmainside = sigmaback # inside the casing
casing_t = 0.006 # 1cm thickness
casing_l = 300 # length of the casing
casing_r = 0.1
casing_a = casing_r - casing_t/2. # inner radius
casing_b = casing_r + casing_t/2. # outer radius
casing_z = np.r_[-casing_l,0.]
# ------------------ SURVEY PARAMETERS ------------------
freqs = np.r_[1e-6] #[1e-1, 1, 5] # frequencies
dsz = -300 # down-hole z source location
src_loc = np.r_[0.,0.,dsz]
inf_loc = np.r_[0.,0.,1e4]
print 'Skin Depth: ', [(500./np.sqrt(sigmaback*_)) for _ in freqs]
# ------------------ MESH ------------------
# fine cells near well bore
csx1, csx2 = 2e-3, 60.
pfx1, pfx2 = 1.3, 1.3
ncx1 = np.ceil(casing_b/csx1+2)
# pad nicely to second cell size
npadx1 = np.floor(np.log(csx2/csx1) / np.log(pfx1))
hx1a,hx1b = Utils.meshTensor([(csx1,ncx1)]),Utils.meshTensor([(csx1,npadx1,pfx1)])
dx1 = sum(hx1a)+sum(hx1b)
dx1 = np.floor(dx1/csx2)
hx1b *= (dx1*csx2 - sum(hx1a))/sum(hx1b)
# second chunk of mesh
dx2 = 300. # uniform mesh out to here
ncx2 = np.ceil((dx2 - dx1)/csx2)
npadx2 = 45
hx2a, hx2b = Utils.meshTensor([(csx2,ncx2)]), Utils.meshTensor([(csx2,npadx2,pfx2)])
hx = np.hstack([hx1a,hx1b,hx2a,hx2b])
# z-direction
csz = 0.05
nza = 10
ncz, npadzu, npadzd = np.int(np.ceil(np.diff(casing_z)[0]/csz))+10, 68, 68 # cell size, number of core cells, number of padding cells in the x- direction
hz = Utils.meshTensor([(csz,npadzd,-1.3), (csz,ncz), (csz,npadzu,1.3)]) # vector of cell widths in the z-direction
# Mesh
mesh = Mesh.CylMesh([hx,1.,hz], [0.,0.,-np.sum(hz[:npadzu+ncz-nza])])
print 'Mesh Extent xmax: %f,: zmin: %f, zmax: %f'%(mesh.vectorCCx.max(), mesh.vectorCCz.min(), mesh.vectorCCz.max())
print 'Number of cells', mesh.nC
if plotIt is True:
fig, ax = plt.subplots(1, 1, figsize=(6, 4))
ax.set_title('Simulation Mesh')
mesh.plotGrid(ax=ax)
plt.show()
# Put the model on the mesh
sigWholespace = sigmaback*np.ones((mesh.nC))
sigBack = sigWholespace.copy()
sigBack[mesh.gridCC[:,2] > 0.] = sigmaair
sigCasing = sigBack.copy()
iCasingZ = (mesh.gridCC[:,2] <= casing_z[1]) & (mesh.gridCC[:,2] >= casing_z[0])
iCasingX = (mesh.gridCC[:,0] >= casing_a) & (mesh.gridCC[:,0] <= casing_b)
iCasing = iCasingX & iCasingZ
sigCasing[iCasing] = sigmacasing
if plotIt is True:
# plotting parameters
xlim = np.r_[0., 0.2]
zlim = np.r_[-350., 10.]
clim_sig = np.r_[-8,6]
# plot models
fig, ax = plt.subplots(1,1,figsize=(4,4))
f = plt.colorbar(mesh.plotImage(np.log10(sigCasing),ax=ax)[0], ax=ax)
ax.grid(which='both')
ax.set_title('Log_10 (Sigma)')
ax.set_xlim(xlim)
ax.set_ylim(zlim)
f.set_clim(clim_sig)
plt.show()
# -------------- Sources --------------------
# Define Custom Current Sources
# surface source
sg_x = np.zeros(mesh.vnF[0],dtype=complex)
sg_y = np.zeros(mesh.vnF[1],dtype=complex)
sg_z = np.zeros(mesh.vnF[2],dtype=complex)
nza = 2 # put the wire two cells above the surface
ncin = 2
# vertically directed wire
sgv_indx = (mesh.gridFz[:,0] > casing_a) & (mesh.gridFz[:,0] < casing_a + csx1) # hook it up to casing at the surface
sgv_indz = (mesh.gridFz[:,2] <= +csz*nza) & (mesh.gridFz[:,2] >= -csz*2)
sgv_ind = sgv_indx & sgv_indz
sg_z[sgv_ind] = -1.
# horizontally directed wire
sgh_indx = (mesh.gridFx[:,0] > casing_a) & (mesh.gridFx[:,0] <= inf_loc[2])
sgh_indz = (mesh.gridFx[:,2] > csz*(nza-0.5)) & (mesh.gridFx[:,2] < csz*(nza+0.5))
sgh_ind = sgh_indx & sgh_indz
sg_x[sgh_ind] = -1.
sgv2_indx = (mesh.gridFz[:,0] >= mesh.gridFx[sgh_ind,0].max()) & (mesh.gridFz[:,0] <= inf_loc[2]*1.2) # hook it up to casing at the surface
sgv2_indz = (mesh.gridFz[:,2] <= +csz*nza) & (mesh.gridFz[:,2] >= -csz*2)
sgv2_ind = sgv2_indx & sgv2_indz
sg_z[sgv2_ind] = 1.
# assemble the source
sg = np.hstack([sg_x,sg_y,sg_z])
sg_p = [FDEM.Src.RawVec_e([],_,sg/mesh.area) for _ in freqs]
# downhole source
dg_x = np.zeros(mesh.vnF[0],dtype=complex)
dg_y = np.zeros(mesh.vnF[1],dtype=complex)
dg_z = np.zeros(mesh.vnF[2],dtype=complex)
# vertically directed wire
dgv_indx = (mesh.gridFz[:,0] < csx1) # go through the center of the well
dgv_indz = (mesh.gridFz[:,2] <= +csz*nza) & (mesh.gridFz[:,2] > dsz + csz/2.)
dgv_ind = dgv_indx & dgv_indz
dg_z[dgv_ind] = -1.
# couple to the casing downhole
dgh_indx = mesh.gridFx[:,0] < casing_a + csx1
dgh_indz = (mesh.gridFx[:,2] < dsz + csz) & (mesh.gridFx[:,2] >= dsz)
dgh_ind = dgh_indx & dgh_indz
dg_x[dgh_ind] = 1.
# horizontal part at surface
dgh2_indx = mesh.gridFx[:,0] <= inf_loc[2]*1.2
dgh2_indz = sgh_indz.copy()
dgh2_ind = dgh2_indx & dgh2_indz
dg_x[dgh2_ind] = -1.
# vertical part at surface
dgv2_ind = sgv2_ind.copy()
dg_z[dgv2_ind] = 1.
# assemble the source
dg = np.hstack([dg_x,dg_y,dg_z])
dg_p = [FDEM.Src.RawVec_e([],_,dg/mesh.area) for _ in freqs]
# ------------ Problem and Survey ---------------
survey = FDEM.Survey(sg_p + dg_p)
mapping = [('sigma', Maps.IdentityMap(mesh))]
problem = FDEM.Problem3D_h(mesh, mapping=mapping)
problem.pair(survey)
# ------------- Solve ---------------------------
t0 = time.time()
fieldsCasing = problem.fields(sigCasing)
print 'Time to solve 2 sources', time.time() - t0
# Plot current
# current density
jn0 = fieldsCasing[dg_p,'j']
jn1 = fieldsCasing[sg_p,'j']
# current
in0 = [mesh.area*fieldsCasing[dg_p,'j'][:,i] for i in range(len(freqs))]
in1 = [mesh.area*fieldsCasing[sg_p,'j'][:,i] for i in range(len(freqs))]
in0 = np.vstack(in0).T
in1 = np.vstack(in1).T
# integrate to get z-current inside casing
inds_inx = (mesh.gridFz[:,0] >= casing_a) & (mesh.gridFz[:,0] <= casing_b)
inds_inz = (mesh.gridFz[:,2] >= dsz ) & (mesh.gridFz[:,2] <= 0)
inds_fz = inds_inx & inds_inz
indsx = [False]*mesh.nFx
inds = list(indsx) + list(inds_fz)
in0_in = in0[np.r_[inds]]
in1_in = in1[np.r_[inds]]
z_in = mesh.gridFz[inds_fz,2]
in0_in = in0_in.reshape([in0_in.shape[0]/3,3])
in1_in = in1_in.reshape([in1_in.shape[0]/3,3])
z_in = z_in.reshape([z_in.shape[0]/3,3])
I0 = in0_in.sum(1).real
I1 = in1_in.sum(1).real
z_in = z_in[:,0]
if plotIt is True:
fig, ax = plt.subplots(1,2,figsize=(12,4))
ax[0].plot(z_in,np.absolute(I0), z_in,np.absolute(I1))
ax[0].legend(['top casing', 'bottom casing'],loc='best')
ax[0].set_title('Magnitude of Vertical Current in Casing')
ax[1].semilogy(z_in,np.absolute(I0), z_in,np.absolute(I1))
ax[1].legend(['top casing', 'bottom casing'],loc='best')
ax[1].set_title('Magnitude of Vertical Current in Casing')
ax[1].set_ylim([1e-2, 1.])
plt.show()
if __name__ == '__main__':
run()
+6 -6
View File
@@ -42,10 +42,10 @@ def run(plotIt=True):
rxOffset=1e-3
rx = EM.TDEM.Rx(np.array([[rxOffset, 0., 30]]), np.logspace(-5,-3, 31), 'bz')
src = EM.TDEM.Src.MagDipole([rx], loc=np.array([0., 0., 80]))
survey = EM.TDEM.Survey([src])
prb = EM.TDEM.Problem_b(mesh, mapping=mapping)
rx = EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 30]]), np.logspace(-5,-3, 31), 'bz')
src = EM.TDEM.SrcTDEM_VMD_MVP([rx], np.array([0., 0., 80]))
survey = EM.TDEM.SurveyTDEM([src])
prb = EM.TDEM.ProblemTDEM_b(mesh, mapping=mapping)
prb.Solver = SolverLU
prb.timeSteps = [(1e-06, 20),(1e-05, 20), (0.0001, 20)]
@@ -53,9 +53,9 @@ def run(plotIt=True):
# create observed data
std = 0.05
survey.dobs = survey.makeSyntheticData(mtrue,std)
survey.std = std
survey.std = std
survey.eps = 1e-5*np.linalg.norm(survey.dobs)
if plotIt:
@@ -1,25 +1,22 @@
from SimPEG import Mesh, Utils, np, SolverLU
## 2D DC forward modeling example with Tensor and Curvilinear Meshes
def run(plotIt=True):
"""
Mesh: Basic Forward 2D DC Resistivity
=====================================
2D DC forward modeling example with Tensor and Curvilinear Meshes
"""
# Step1: Generate Tensor and Curvilinear Mesh
sz = [40,40]
# Tensor Mesh
tM = Mesh.TensorMesh(sz)
# Curvilinear Mesh
rM = Mesh.CurvilinearMesh(Utils.meshutils.exampleLrmGrid(sz,'rotate'))
# Step2: Direct Current (DC) operator
def DCfun(mesh, pts):
D = mesh.faceDiv
G = D.T
sigma = 1e-2*np.ones(mesh.nC)
MsigI = mesh.getFaceInnerProduct(sigma, invProp=True, invMat=True)
A = -D*MsigI*D.T
Msigi = mesh.getFaceInnerProduct(1./sigma)
MsigI = Utils.sdInv(Msigi)
A = D*MsigI*G
A[-1,-1] /= mesh.vol[-1] # Remove null space
rhs = np.zeros(mesh.nC)
txind = Utils.meshutils.closestPoints(mesh, pts)
@@ -40,17 +37,39 @@ def run(plotIt=True):
if not plotIt: return
import matplotlib.pyplot as plt
import matplotlib
from matplotlib.mlab import griddata
#Step4: Making Figure
fig, axes = plt.subplots(1,2,figsize=(12*1.2,4*1.2))
label = ["(a)", "(b)"]
opts = {}
vmin, vmax = phitM.min(), phitM.max()
dat = tM.plotImage(phitM, ax=axes[0], clim=(vmin, vmax), grid=True)
dat = rM.plotImage(phirM, ax=axes[1], clim=(vmin, vmax), grid=True)
#TODO: At the moment Curvilinear Mesh do not have plotimage
Xi = tM.gridCC[:,0].reshape(sz[0], sz[1], order='F')
Yi = tM.gridCC[:,1].reshape(sz[0], sz[1], order='F')
PHIrM = griddata(rM.gridCC[:,0], rM.gridCC[:,1], phirM, Xi, Yi, interp='linear')
axes[1].contourf(Xi, Yi, PHIrM, 100, vmin=vmin, vmax=vmax)
cb = plt.colorbar(dat[0], ax=axes[0]); cb.set_label("Voltage (V)")
cb = plt.colorbar(dat[0], ax=axes[1]); cb.set_label("Voltage (V)")
tM.plotGrid(ax=axes[0], **opts)
axes[0].set_title('TensorMesh')
rM.plotGrid(ax=axes[1], **opts)
axes[1].set_title('CurvilinearMesh')
for i in range(2):
axes[i].set_xlim(0.025, 0.975)
axes[i].set_ylim(0.025, 0.975)
axes[i].text(0., 1.0, label[i], fontsize=20)
if i==0:
axes[i].set_ylabel("y")
else:
axes[i].set_ylabel(" ")
axes[i].set_xlabel("x")
plt.show()
-124
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@@ -1,124 +0,0 @@
from SimPEG import *
def run(N=100, plotIt=True):
"""
Inversion: Linear Problem
=========================
Here we go over the basics of creating a linear problem and inversion.
"""
np.random.seed(1)
std_noise = 1e-2
mesh = Mesh.TensorMesh([N])
m0 = np.ones(mesh.nC) * 1e-4
mref = np.zeros(mesh.nC)
nk = 10
jk = np.linspace(1.,nk,nk)
p = -2.
q = 1.
g = lambda k: np.exp(p*jk[k]*mesh.vectorCCx)*np.cos(np.pi*q*jk[k]*mesh.vectorCCx)
G = np.empty((nk, mesh.nC))
for i in range(nk):
G[i,:] = g(i)
mtrue = np.zeros(mesh.nC)
mtrue[mesh.vectorCCx > 0.3] = 1.
mtrue[mesh.vectorCCx > 0.45] = -0.5
mtrue[mesh.vectorCCx > 0.6] = 0
prob = Problem.LinearProblem(mesh, G)
survey = Survey.LinearSurvey()
survey.pair(prob)
survey.dobs = prob.fields(mtrue) + std_noise * np.random.randn(nk)
#survey.makeSyntheticData(mtrue, std=std_noise)
wd = np.ones(nk) * std_noise
#print survey.std[0]
#M = prob.mesh
# Distance weighting
wr = np.sum(prob.G**2.,axis=0)**0.5
wr = ( wr/np.max(wr) )
# reg = Regularization.Simple(mesh)
# reg.mref = mref
# reg.cell_weights = wr
#
dmis = DataMisfit.l2_DataMisfit(survey)
dmis.Wd = 1./wd
#
# opt = Optimization.ProjectedGNCG(maxIter=20,lower=-2.,upper=2., maxIterCG= 10, tolCG = 1e-4)
# invProb = InvProblem.BaseInvProblem(dmis, reg, opt)
# invProb.curModel = m0
#
# beta = Directives.BetaSchedule(coolingFactor=2, coolingRate=1)
# target = Directives.TargetMisfit()
#
betaest = Directives.BetaEstimate_ByEig()
# inv = Inversion.BaseInversion(invProb, directiveList=[beta, betaest, target])
#
#
# mrec = inv.run(m0)
# ml2 = mrec
# print "Final misfit:" + str(invProb.dmisfit.eval(mrec))
#
# # Switch regularization to sparse
# phim = invProb.phi_m_last
# phid = invProb.phi_d
reg = Regularization.Sparse(mesh)
reg.mref = mref
reg.cell_weights = wr
reg.mref = np.zeros(mesh.nC)
eps_p = 5e-2
eps_q = 5e-2
norms = [0., 0., 2., 2.]
opt = Optimization.ProjectedGNCG(maxIter=100 ,lower=-2.,upper=2., maxIterLS = 20, maxIterCG= 10, tolCG = 1e-3)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt)
update_Jacobi = Directives.Update_lin_PreCond()
IRLS = Directives.Update_IRLS( norms=norms, eps_p=eps_p, eps_q=eps_q)
inv = Inversion.BaseInversion(invProb, directiveList=[IRLS,betaest,update_Jacobi])
# Run inversion
mrec = inv.run(m0)
print "Final misfit:" + str(invProb.dmisfit.eval(mrec))
if plotIt:
import matplotlib.pyplot as plt
fig, axes = plt.subplots(1,2,figsize=(12*1.2,4*1.2))
for i in range(prob.G.shape[0]):
axes[0].plot(prob.G[i,:])
axes[0].set_title('Columns of matrix G')
axes[1].plot(mesh.vectorCCx, mtrue, 'b-')
axes[1].plot(mesh.vectorCCx, reg.l2model, 'r-')
#axes[1].legend(('True Model', 'Recovered Model'))
axes[1].set_ylim(-1.0,1.25)
axes[1].plot(mesh.vectorCCx, mrec, 'k-',lw = 2)
axes[1].legend(('True Model', 'Smooth l2-l2',
'Sparse lp:' + str(reg.norms[0]) + ', lqx:' + str(reg.norms[1]) ), fontsize = 12)
plt.show()
return prob, survey, mesh, mrec
if __name__ == '__main__':
run()
+1 -1
View File
@@ -100,7 +100,7 @@ def run(plotIt=True):
# Regularization - with a regularization mesh
regMesh = simpeg.Mesh.TensorMesh([m1d.hx[problem.mapping.sigmaMap.maps[-1].indActive]],m1d.x0)
reg = simpeg.Regularization.Tikhonov(regMesh)
reg.mrefInSmooth = True
reg.smoothModel = True
reg.alpha_s = 1e-7
reg.alpha_x = 1.
# Inversion problem
-41
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@@ -1,41 +0,0 @@
from SimPEG import *
from SimPEG.Utils import surface2ind_topo
def run(plotIt=False, nx = 5, ny = 5):
"""
Here we show how to use :code:`Utils.surface2ind_topo` to identify cells below
a topographic surface.
"""
mesh = Mesh.TensorMesh([nx,ny], x0='CC') # 2D mesh
xtopo = np.linspace(mesh.gridN[:,0].min(), mesh.gridN[:,0].max())
topo = 0.4*np.sin(xtopo*5) # define a topographic surface
Topo = np.hstack([Utils.mkvc(xtopo,2),Utils.mkvc(topo,2)]) #make it an array
indcc = surface2ind_topo(mesh, Topo,'CC')
if plotIt:
from matplotlib.pylab import plt
from scipy.interpolate import interp1d
fig, ax = plt.subplots(1,1,figsize=(6,6))
mesh.plotGrid(ax=ax, nodes=True, centers=True)
ax.plot(xtopo,topo,'k',linewidth=1)
# ax.plot(mesh.vectorNx, interp1d(xtopo,topo)(mesh.vectorNx),'--k',linewidth=3)
ax.plot(mesh.vectorCCx, interp1d(xtopo,topo)(mesh.vectorCCx),'--k',linewidth=3)
aveN2CC = Utils.sdiag(mesh.aveN2CC.T.sum(1))*mesh.aveN2CC.T
a = aveN2CC * indcc
a[a > 0] = 1.
a[a < 0.25] = np.nan
a = a.reshape(mesh.vnN, order='F')
masked_array = np.ma.array(a, mask=np.isnan(a))
ax.pcolor(mesh.vectorNx,mesh.vectorNy,masked_array.T, cmap = plt.cm.gray,alpha=0.2)
plt.show()
if __name__ == '__main__':
run(plotIt=True)
+2 -5
View File
@@ -5,12 +5,10 @@ import DC_Analytic_Dipole
import DC_Forward_PseudoSection
import EM_FDEM_1D_Inversion
import EM_FDEM_Analytic_MagDipoleWholespace
import EM_Schenkel_Morrison_Casing
import EM_TDEM_1D_Inversion
import FLOW_Richards_1D_Celia1990
import Inversion_IRLS
import Forward_BasicDirectCurrent
import Inversion_Linear
import Mesh_Basic_ForwardDC
import Mesh_Basic_PlotImage
import Mesh_Basic_Types
import Mesh_Operators_CahnHilliard
@@ -20,9 +18,8 @@ import Mesh_QuadTree_HangingNodes
import Mesh_Tensor_Creation
import MT_1D_ForwardAndInversion
import MT_3D_Foward
import Utils_surface2ind_topo
__examples__ = ["DC_Analytic_Dipole", "DC_Forward_PseudoSection", "EM_FDEM_1D_Inversion", "EM_FDEM_Analytic_MagDipoleWholespace", "EM_Schenkel_Morrison_Casing", "EM_TDEM_1D_Inversion", "FLOW_Richards_1D_Celia1990", "Inversion_IRLS", "Inversion_Linear", "Mesh_Basic_ForwardDC", "Mesh_Basic_PlotImage", "Mesh_Basic_Types", "Mesh_Operators_CahnHilliard", "Mesh_QuadTree_Creation", "Mesh_QuadTree_FaceDiv", "Mesh_QuadTree_HangingNodes", "Mesh_Tensor_Creation", "MT_1D_ForwardAndInversion", "MT_3D_Foward", "Utils_surface2ind_topo"]
__examples__ = ["DC_Analytic_Dipole", "DC_Forward_PseudoSection", "EM_FDEM_1D_Inversion", "EM_FDEM_Analytic_MagDipoleWholespace", "EM_TDEM_1D_Inversion", "FLOW_Richards_1D_Celia1990", "Forward_BasicDirectCurrent", "Inversion_Linear", "Mesh_Basic_PlotImage", "Mesh_Basic_Types", "Mesh_Operators_CahnHilliard", "Mesh_QuadTree_Creation", "Mesh_QuadTree_FaceDiv", "Mesh_QuadTree_HangingNodes", "Mesh_Tensor_Creation", "MT_1D_ForwardAndInversion", "MT_3D_Foward"]
##### AUTOIMPORTS #####
-157
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@@ -1,157 +0,0 @@
from SimPEG import np, Mesh, Maps, Utils, DataMisfit, Regularization, Optimization, Inversion, InvProblem, Directives
from SimPEG import SolverLU
from SimPEG.EM import FDEM, TDEM, mu_0
import matplotlib.pyplot as plt
import matplotlib
matplotlib.rcParams['font.size'] = 14
def run(plotIt=True):
# Set up cylindrically symmeric mesh
cs, ncx, ncz, npad = 10., 15, 25, 13 # padded cyl mesh
hx = [(cs,ncx), (cs,npad,1.3)]
hz = [(cs,npad,-1.3), (cs,ncz), (cs,npad,1.3)]
mesh = Mesh.CylMesh([hx,1,hz], '00C')
# Conductivity model
layerz = np.r_[-200., -100.]
layer = (mesh.vectorCCz>=layerz[0]) & (mesh.vectorCCz<=layerz[1])
active = mesh.vectorCCz<0.
sig_half = 1e-2 # Half-space conductivity
sig_air = 1e-8 # Air conductivity
sig_layer = 5e-2 # Layer conductivity
sigma = np.ones(mesh.nCz)*sig_air
sigma[active] = sig_half
sigma[layer] = sig_layer
# Mapping
actMap = Maps.InjectActiveCells(mesh, active, np.log(1e-8), nC=mesh.nCz)
mapping = Maps.ExpMap(mesh) * Maps.SurjectVertical1D(mesh) * actMap
mtrue = np.log(sigma[active])
# FDEM problem & survey
rxlocs = Utils.ndgrid([np.r_[50.], np.r_[0], np.r_[0.]])
bzi = FDEM.Rx.Point_bSecondary(rxlocs, 'z', 'real')
bzr = FDEM.Rx.Point_bSecondary(rxlocs, 'z', 'imag')
freqs = np.logspace(2, 3, 5)
srcLoc = np.array([0., 0., 0.])
print 'min skin depth = ', 500./np.sqrt(freqs.max() * sig_half), 'max skin depth = ', 500./np.sqrt(freqs.min() * sig_half)
print 'max x ', mesh.vectorCCx.max(), 'min z ', mesh.vectorCCz.min(), 'max z ', mesh.vectorCCz.max()
srcList = []
[srcList.append(FDEM.Src.MagDipole([bzr, bzi],freq, srcLoc,orientation='Z')) for freq in freqs]
surveyFD = FDEM.Survey(srcList)
prbFD = FDEM.Problem3D_b(mesh, mapping=mapping)
prbFD.pair(surveyFD)
std = 0.03
surveyFD.makeSyntheticData(mtrue, std)
surveyFD.eps = np.linalg.norm(surveyFD.dtrue)*1e-5
# FDEM inversion
np.random.seed(1)
dmisfit = DataMisfit.l2_DataMisfit(surveyFD)
regMesh = Mesh.TensorMesh([mesh.hz[mapping.maps[-1].indActive]])
reg = Regularization.Simple(regMesh)
opt = Optimization.InexactGaussNewton(maxIterCG=10, maxIter=4)
invProb = InvProblem.BaseInvProblem(dmisfit, reg, opt)
# Inversion Directives
beta = Directives.BetaSchedule(coolingFactor=5, coolingRate=3)
# betaest = Directives.BetaEstimate_ByEig(beta0_ratio=10.)
invProb.beta = 1.
target = Directives.TargetMisfit()
inv = Inversion.BaseInversion(invProb, directiveList=[beta,target])
m0 = np.log(np.ones(mtrue.size)*sig_half)
reg.alpha_s = 5e-1
reg.alpha_x = 1.
prbFD.counter = opt.counter = Utils.Counter()
opt.LSshorten = 0.5
opt.tolG = 1e-10
opt.eps = 1e-10
opt.remember('xc')
moptFD = inv.run(m0)
# TDEM problem
times = np.logspace(-4, np.log10(2e-3), 10)
print 'min diffusion distance ', 1.28*np.sqrt(times.min()/(sig_half*mu_0)), 'max diffusion distance ', 1.28*np.sqrt(times.max()/(sig_half*mu_0))
rx = TDEM.Rx(rxlocs, times, 'bz')
src = TDEM.Src.MagDipole([rx], waveform=TDEM.Src.StepOffWaveform(), loc=srcLoc) # same src location as FDEM problem
surveyTD = TDEM.Survey([src])
prbTD = TDEM.Problem_b(mesh, mapping=mapping)
prbTD.timeSteps = [(5e-5, 10),(1e-4, 10),(5e-4, 10)]
prbTD.pair(surveyTD)
prbTD.Solver = SolverLU
std = 0.03
surveyTD.makeSyntheticData(mtrue, std)
surveyTD.std = std
surveyTD.eps = np.linalg.norm(surveyTD.dtrue)*1e-5
# TDEM inversion
dmisfit = DataMisfit.l2_DataMisfit(surveyTD)
regMesh = Mesh.TensorMesh([mesh.hz[mapping.maps[-1].indActive]])
reg = Regularization.Simple(regMesh)
opt = Optimization.InexactGaussNewton(maxIterCG=10, maxIter=4)
invProb = InvProblem.BaseInvProblem(dmisfit, reg, opt)
# Inversion Directives
beta = Directives.BetaSchedule(coolingFactor=5, coolingRate=3)
invProb.beta = 1.
# betaest = Directives.BetaEstimate_ByEig(beta0_ratio=1.)
target = Directives.TargetMisfit()
inv = Inversion.BaseInversion(invProb, directiveList=[beta, target])
m0 = np.log(np.ones(mtrue.size)*sig_half)
reg.alpha_s = 5e-1
reg.alpha_x = 1.
prbTD.counter = opt.counter = Utils.Counter()
opt.LSshorten = 0.5
opt.remember('xc')
moptTD = inv.run(m0)
if plotIt:
fig, ax = plt.subplots(1,1, figsize = (4, 6))
plt.semilogx(sigma[active], mesh.vectorCCz[active], 'k-', lw=2)
plt.semilogx(np.exp(moptFD), mesh.vectorCCz[active], 'ko', ms=3)
plt.semilogx(np.exp(moptTD), mesh.vectorCCz[active], 'k*')
ax.set_ylim(-1000, 0)
ax.set_xlim(5e-3, 1e-1)
ax.set_xlabel('Conductivity (S/m)', fontsize = 14)
ax.set_ylabel('Depth (m)', fontsize = 14)
ax.grid(color='k', alpha=0.5, linestyle='dashed', linewidth=0.5)
plt.legend(['True', 'Pred (FD)', 'Pred (TD)'], fontsize=13, loc=4)
plt.show()
fig = plt.figure(figsize = (10*1.3, 5*1.3))
ax2 = plt.subplot(122)
ax2.plot(times, surveyTD.dobs, 'k-', lw=2)
ax2.plot(times, surveyTD.dpred(moptTD), 'ko', ms=4)
ax2.set_xscale('log')
ax2.set_yscale('log')
ax2.set_xlim(times.min(), times.max())
ax1 = plt.subplot(121)
ax1.plot(freqs, -surveyFD.dobs[::2], 'k-', lw=2)
ax1.plot(freqs, -surveyFD.dobs[1::2], 'k--', lw=2)
dpredFD = surveyFD.dpred(moptTD)
ax1.plot(freqs, -dpredFD[::2], 'ko', ms=4)
ax1.plot(freqs, -dpredFD[1::2], 'k+', markeredgewidth=2., ms=10)
ax1.set_xscale('log')
ax1.set_yscale('log')
ax2.set_xlabel('Time (s)', fontsize = 14)
ax1.set_xlabel('Frequency (Hz)', fontsize = 14)
ax1.set_ylabel('Vertical magnetic field (T)', fontsize = 14)
ax2.grid(True,which='minor')
ax1.grid(True,which='minor')
ax2.set_title("(b) TD observed vs. predicted", fontsize = 14)
ax1.set_title("(a) FD observed vs. predicted", fontsize = 14)
ax2.legend(("Obs", "Pred"), fontsize = 12)
ax1.legend(("Obs", "Pred (real)", "Pred (imag)"), fontsize = 12, loc=3)
ax1.set_xlim(freqs.max(), freqs.min())
plt.show()
if __name__ == '__main__':
run()
+1 -3
View File
@@ -33,9 +33,7 @@ class BaseInversion(object):
self._directiveList = value
self._directiveList.inversion = self
def __init__(self, invProb, directiveList=None, **kwargs):
if directiveList is None:
directiveList = []
def __init__(self, invProb, directiveList=[], **kwargs):
self.directiveList = directiveList
Utils.setKwargs(self, **kwargs)
+1 -1
View File
@@ -1,5 +1,5 @@
from SimPEG import SolverLU as SimpegSolver, PropMaps, Utils, mkvc, sp, np
from SimPEG.EM.FDEM.ProblemFDEM import BaseFDEMProblem
from SimPEG.EM.FDEM.FDEM import BaseFDEMProblem
from SurveyMT import Survey, Data
from FieldsMT import BaseMTFields
+7 -12
View File
@@ -7,16 +7,17 @@ from SimPEG.MT.Utils.dataUtils import rec2ndarr
# Import modules
import numpy as np
import os, sys, re
try:
import osr
except ImportError as e:
print 'Could not import osr, missing the gdal package'
pass
class EDIimporter:
"""
A class to import EDIfiles.
"""
# Define data converters
_impUnitEDI2SI = 4*np.pi*1e-4 # Convert Z[mV/km/nT] (as in EDI)to Z[V/A] SI unit
_impUnitSI2EDI = 1./_impUnitEDI2SI # ConvertZ[V/A] SI unit to Z[mV/km/nT] (as in EDI)
@@ -25,8 +26,8 @@ class EDIimporter:
comps = None
# Hidden properties
_outEPSG = None # Project info
_2out = None # The projection operator
_outEPSG = None
_2out = None
def __init__(self, EDIfilesList, compList=None, outEPSG=None):
@@ -112,12 +113,6 @@ class EDIimporter:
# nOutData=length(obj.data);
# obj.data(nOutData+1:nOutData+length(TEMP.data),:) = TEMP.data;
def _transfromPoints(self,longD,latD):
# Import the coordinate projections
try:
import osr
except ImportError as e:
print 'Could not import osr, missing the gdal package\nCan not project coordinates'
raise e
# Coordinates convertor
if self._2out is None:
src = osr.SpatialReference()
+88 -26
View File
@@ -533,6 +533,83 @@ class ActiveCells(InjectActiveCells):
FutureWarning)
InjectActiveCells.__init__(self, mesh, indActive, valInactive, nC)
class InjectActiveCellsTopo(IdentityMap):
"""
Active model parameters. Extend for cells on topography to air cell (only works for tensor mesh)
"""
indActive = None #: Active Cells
valInactive = None #: Values of inactive Cells
nC = None #: Number of cells in the full model
def __init__(self, mesh, indActive, nC=None):
self.mesh = mesh
self.nC = nC or mesh.nC
if indActive.dtype is not bool:
z = np.zeros(self.nC,dtype=bool)
z[indActive] = True
indActive = z
self.indActive = indActive
self.indInactive = np.logical_not(indActive)
inds = np.nonzero(self.indActive)[0]
self.P = sp.csr_matrix((np.ones(inds.size),(inds, range(inds.size))), shape=(self.nC, self.nP))
@property
def shape(self):
return (self.nC, self.nP)
@property
def nP(self):
"""Number of parameters in the model."""
return self.indActive.sum()
def _transform(self, m):
val_temp = np.zeros(self.mesh.nC)
val_temp[self.indActive] = m
valInactive = np.zeros(self.mesh.nC)
#1D
if self.mesh.dim == 1:
z_temp = self.mesh.gridCC
val_temp[~self.indActive] = val_temp[np.argmax(z_temp[self.indActive])]
#2D
elif self.mesh.dim == 2:
act_temp = self.indActive.reshape((self.mesh.nCx, self.mesh.nCy), order = 'F')
val_temp = val_temp.reshape((self.mesh.nCx, self.mesh.nCy), order = 'F')
y_temp = self.mesh.gridCC[:,1].reshape((self.mesh.nCx, self.mesh.nCy), order = 'F')
for i in range(self.mesh.nCx):
act_tempx = act_temp[i,:] == 1
val_temp[i,~act_tempx] = val_temp[i,np.argmax(y_temp[i,act_tempx])]
valInactive[~self.indActive] = Utils.mkvc(val_temp)[~self.indActive]
#3D
elif self.mesh.dim == 3:
act_temp = self.indActive.reshape((self.mesh.nCx*self.mesh.nCy, self.mesh.nCz), order = 'F')
val_temp = val_temp.reshape((self.mesh.nCx*self.mesh.nCy, self.mesh.nCz), order = 'F')
z_temp = self.mesh.gridCC[:,2].reshape((self.mesh.nCx*self.mesh.nCy, self.mesh.nCz), order = 'F')
for i in range(self.mesh.nCx*self.mesh.nCy):
act_tempxy = act_temp[i,:] == 1
val_temp[i,~act_tempxy] = val_temp[i,np.argmax(z_temp[i,act_tempxy])]
valInactive[~self.indActive] = Utils.mkvc(val_temp)[~self.indActive]
self.valInactive = valInactive
return self.P*m + self.valInactive
def inverse(self, D):
return self.P.T*D
def deriv(self, m):
return self.P
class ActiveCellsTopo(InjectActiveCellsTopo):
def __init__(self, mesh, indActive, valInactive, nC=None):
warnings.warn(
"`ActiveCellsTopo` is deprecated and will be removed in future versions. Use `InjectActiveCellsTopo` instead",
FutureWarning)
InjectActiveCellsTopo.__init__(self, mesh, indActive, valInactive, nC)
class Weighting(IdentityMap):
"""
@@ -682,29 +759,15 @@ class PolyMap(IdentityMap):
m = [\sigma_1, \sigma_2, c]
Can take in an actInd vector to account for topography.
"""
def __init__(self, mesh, order, logSigma=True, normal='X', actInd = None):
def __init__(self, mesh, order, logSigma=True, normal='X'):
IdentityMap.__init__(self, mesh)
self.logSigma = logSigma
self.order = order
self.normal = normal
self.actInd = actInd
if getattr(self, 'actInd', None) is None:
self.actInd = range(self.mesh.nC)
self.nC = self.mesh.nC
else:
self.nC = len(self.actInd)
slope = 1e4
@property
def shape(self):
return (self.nC, self.nP)
@property
def nP(self):
if np.isscalar(self.order):
@@ -722,8 +785,8 @@ class PolyMap(IdentityMap):
sig1, sig2 = np.exp(sig1), np.exp(sig2)
#2D
if self.mesh.dim == 2:
X = self.mesh.gridCC[self.actInd,0]
Y = self.mesh.gridCC[self.actInd,1]
X = self.mesh.gridCC[:,0]
Y = self.mesh.gridCC[:,1]
if self.normal =='X':
f = polynomial.polyval(Y, c) - X
elif self.normal =='Y':
@@ -732,9 +795,9 @@ class PolyMap(IdentityMap):
raise(Exception("Input for normal = X or Y or Z"))
#3D
elif self.mesh.dim == 3:
X = self.mesh.gridCC[self.actInd,0]
Y = self.mesh.gridCC[self.actInd,1]
Z = self.mesh.gridCC[self.actInd,2]
X = self.mesh.gridCC[:,0]
Y = self.mesh.gridCC[:,1]
Z = self.mesh.gridCC[:,2]
if self.normal =='X':
f = polynomial.polyval2d(Y, Z, c.reshape((self.order[0]+1,self.order[1]+1))) - X
elif self.normal =='Y':
@@ -743,7 +806,6 @@ class PolyMap(IdentityMap):
f = polynomial.polyval2d(X, Y, c.reshape((self.order[0]+1,self.order[1]+1))) - Z
else:
raise(Exception("Input for normal = X or Y or Z"))
else:
raise(Exception("Only supports 2D"))
@@ -757,8 +819,8 @@ class PolyMap(IdentityMap):
sig1, sig2 = np.exp(sig1), np.exp(sig2)
#2D
if self.mesh.dim == 2:
X = self.mesh.gridCC[self.actInd,0]
Y = self.mesh.gridCC[self.actInd,1]
X = self.mesh.gridCC[:,0]
Y = self.mesh.gridCC[:,1]
if self.normal =='X':
f = polynomial.polyval(Y, c) - X
@@ -770,9 +832,9 @@ class PolyMap(IdentityMap):
raise(Exception("Input for normal = X or Y or Z"))
#3D
elif self.mesh.dim == 3:
X = self.mesh.gridCC[self.actInd,0]
Y = self.mesh.gridCC[self.actInd,1]
Z = self.mesh.gridCC[self.actInd,2]
X = self.mesh.gridCC[:,0]
Y = self.mesh.gridCC[:,1]
Z = self.mesh.gridCC[:,2]
if self.normal =='X':
f = polynomial.polyval2d(Y, Z, c.reshape((self.order[0]+1,self.order[1]+1))) - X
+61
View File
@@ -1,4 +1,5 @@
import numpy as np
import scipy.sparse as sp
from SimPEG import Utils
@@ -594,3 +595,63 @@ class BaseRectangularMesh(BaseMesh):
return out
else:
return switchKernal(x)
def getInterpolationMatMesh2Mesh(self, mesh2, locType='CC', locTypeFrom=None):
"""
Interpolates variables from the current mesh to a new mesh (mesh2)
:param Mesh mesh2: SimPEG mesh which we interpolate values to
:param string locType: location of variables 'CC', 'E', 'F', 'N'
:rtype: scipy.sparse.csr_matrix
:return P: interpolation matrix
"""
# import warnings
# warnings.warn(
# "`getInterpolationMatMesh2Mesh` will be slow. If you want to interpolate a vector from one mesh to another, use `InterpolateVecMesh2Mesh`",
# RuntimeWarning)
if locTypeFrom is None:
locTypeFrom = locType # assume that we are interpolating to and from the same place
# Error Checking
if self._meshType == 'CYL':
assert self.isSymmetric, "Currently, we do not support non-symmetric cyl meshes"
if mesh2._meshType == 'CYL':
assert self._meshType == 'CYL', "Interpolation from 3D mesh to Cyl mesh is not supported"
# if Cyl to cart call
if self._meshType == 'CYL' and mesh2._meshType != 'CYL':
return self.getInterpolationMatCartMesh(mesh2, locType)
# Scalars
if locType in ['CC', 'CCVx', 'CCVy', 'CCVz', 'N', 'Fx', 'Fy', 'Fz', 'Ex', 'Ey', 'Ez']:
grid = getattr(mesh2, 'grid%s'%locTypeFrom)
return self.getInterpolationMat(grid, locType)
# Vectors
else:
if self._meshType == 'CYL':
if locType == 'F':
X = self.getInterpolationMatMesh2Mesh(mesh2, locType='Fx', locTypeFrom=locTypeFrom+'x')
Z = self.getInterpolationMatMesh2Mesh(mesh2, locType='Fz', locTypeFrom=locTypeFrom+'z')
return sp.block_diag([X, Z])
elif locType == 'E':
return self.getInterpolationMatMesh2Mesh(mesh2, locType='Ey', locTypeFrom=locTypeFrom+'y')
if self.dim == 1:
return self.getInterpolationMatMesh2Mesh(mesh2, locType='%sx'%locType, locTypeFrom=locTypeFrom+'x')
elif self.dim == 2:
X = self.getInterpolationMatMesh2Mesh(mesh2, locType='%sx'%locType, locTypeFrom=locTypeFrom+'x')
Y = self.getInterpolationMatMesh2Mesh(mesh2, locType='%sy'%locType, locTypeFrom=locTypeFrom+'y')
return sp.block_diag([X, Y])
elif self.dim == 3:
X = self.getInterpolationMatMesh2Mesh(mesh2, locType='%sx'%locType, locTypeFrom=locTypeFrom+'x')
Y = self.getInterpolationMatMesh2Mesh(mesh2, locType='%sy'%locType, locTypeFrom=locTypeFrom+'y')
Z = self.getInterpolationMatMesh2Mesh(mesh2, locType='%sz'%locType, locTypeFrom=locTypeFrom+'z')
return sp.block_diag([X, Y, Z])
+97 -2
View File
@@ -2,7 +2,6 @@ from SimPEG import Utils, np
from BaseMesh import BaseRectangularMesh
from DiffOperators import DiffOperators
from InnerProducts import InnerProducts
from View import CurvView
# Some helper functions.
length2D = lambda x: (x[:, 0]**2 + x[:, 1]**2)**0.5
@@ -11,7 +10,7 @@ normalize2D = lambda x: x/np.kron(np.ones((1, 2)), Utils.mkvc(length2D(x), 2))
normalize3D = lambda x: x/np.kron(np.ones((1, 3)), Utils.mkvc(length3D(x), 2))
class CurvilinearMesh(BaseRectangularMesh, DiffOperators, InnerProducts, CurvView):
class CurvilinearMesh(BaseRectangularMesh, DiffOperators, InnerProducts):
"""
CurvilinearMesh is a mesh class that deals with curvilinear meshes.
@@ -331,6 +330,102 @@ class CurvilinearMesh(BaseRectangularMesh, DiffOperators, InnerProducts, CurvVie
#############################################
# Plotting Functions #
#############################################
def plotGrid(self, ax=None, nodes=False, faces=False, centers=False, edges=False, lines=True, showIt=False):
"""Plot the nodal, cell-centered and staggered grids for 1,2 and 3 dimensions.
.. plot::
:include-source:
from SimPEG import Mesh, Utils
X, Y = Utils.exampleLrmGrid([3,3],'rotate')
M = Mesh.CurvilinearMesh([X, Y])
M.plotGrid(showIt=True)
"""
import matplotlib.pyplot as plt
import matplotlib
from mpl_toolkits.mplot3d import Axes3D
mkvc = Utils.mkvc
axOpts = {'projection':'3d'} if self.dim == 3 else {}
if ax is None: ax = plt.subplot(111, **axOpts)
NN = self.r(self.gridN, 'N', 'N', 'M')
if self.dim == 2:
if lines:
X1 = np.c_[mkvc(NN[0][:-1, :]), mkvc(NN[0][1:, :]), mkvc(NN[0][:-1, :])*np.nan].flatten()
Y1 = np.c_[mkvc(NN[1][:-1, :]), mkvc(NN[1][1:, :]), mkvc(NN[1][:-1, :])*np.nan].flatten()
X2 = np.c_[mkvc(NN[0][:, :-1]), mkvc(NN[0][:, 1:]), mkvc(NN[0][:, :-1])*np.nan].flatten()
Y2 = np.c_[mkvc(NN[1][:, :-1]), mkvc(NN[1][:, 1:]), mkvc(NN[1][:, :-1])*np.nan].flatten()
X = np.r_[X1, X2]
Y = np.r_[Y1, Y2]
ax.plot(X, Y, 'b-')
if centers:
ax.plot(self.gridCC[:,0],self.gridCC[:,1],'ro')
# Nx = self.r(self.normals, 'F', 'Fx', 'V')
# Ny = self.r(self.normals, 'F', 'Fy', 'V')
# Tx = self.r(self.tangents, 'E', 'Ex', 'V')
# Ty = self.r(self.tangents, 'E', 'Ey', 'V')
# ax.plot(self.gridN[:, 0], self.gridN[:, 1], 'bo')
# nX = np.c_[self.gridFx[:, 0], self.gridFx[:, 0] + Nx[0]*length, self.gridFx[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridFx[:, 1], self.gridFx[:, 1] + Nx[1]*length, self.gridFx[:, 1]*np.nan].flatten()
# ax.plot(self.gridFx[:, 0], self.gridFx[:, 1], 'rs')
# ax.plot(nX, nY, 'r-')
# nX = np.c_[self.gridFy[:, 0], self.gridFy[:, 0] + Ny[0]*length, self.gridFy[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridFy[:, 1], self.gridFy[:, 1] + Ny[1]*length, self.gridFy[:, 1]*np.nan].flatten()
# #ax.plot(self.gridFy[:, 0], self.gridFy[:, 1], 'gs')
# ax.plot(nX, nY, 'g-')
# tX = np.c_[self.gridEx[:, 0], self.gridEx[:, 0] + Tx[0]*length, self.gridEx[:, 0]*np.nan].flatten()
# tY = np.c_[self.gridEx[:, 1], self.gridEx[:, 1] + Tx[1]*length, self.gridEx[:, 1]*np.nan].flatten()
# ax.plot(self.gridEx[:, 0], self.gridEx[:, 1], 'r^')
# ax.plot(tX, tY, 'r-')
# nX = np.c_[self.gridEy[:, 0], self.gridEy[:, 0] + Ty[0]*length, self.gridEy[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridEy[:, 1], self.gridEy[:, 1] + Ty[1]*length, self.gridEy[:, 1]*np.nan].flatten()
# #ax.plot(self.gridEy[:, 0], self.gridEy[:, 1], 'g^')
# ax.plot(nX, nY, 'g-')
elif self.dim == 3:
X1 = np.c_[mkvc(NN[0][:-1, :, :]), mkvc(NN[0][1:, :, :]), mkvc(NN[0][:-1, :, :])*np.nan].flatten()
Y1 = np.c_[mkvc(NN[1][:-1, :, :]), mkvc(NN[1][1:, :, :]), mkvc(NN[1][:-1, :, :])*np.nan].flatten()
Z1 = np.c_[mkvc(NN[2][:-1, :, :]), mkvc(NN[2][1:, :, :]), mkvc(NN[2][:-1, :, :])*np.nan].flatten()
X2 = np.c_[mkvc(NN[0][:, :-1, :]), mkvc(NN[0][:, 1:, :]), mkvc(NN[0][:, :-1, :])*np.nan].flatten()
Y2 = np.c_[mkvc(NN[1][:, :-1, :]), mkvc(NN[1][:, 1:, :]), mkvc(NN[1][:, :-1, :])*np.nan].flatten()
Z2 = np.c_[mkvc(NN[2][:, :-1, :]), mkvc(NN[2][:, 1:, :]), mkvc(NN[2][:, :-1, :])*np.nan].flatten()
X3 = np.c_[mkvc(NN[0][:, :, :-1]), mkvc(NN[0][:, :, 1:]), mkvc(NN[0][:, :, :-1])*np.nan].flatten()
Y3 = np.c_[mkvc(NN[1][:, :, :-1]), mkvc(NN[1][:, :, 1:]), mkvc(NN[1][:, :, :-1])*np.nan].flatten()
Z3 = np.c_[mkvc(NN[2][:, :, :-1]), mkvc(NN[2][:, :, 1:]), mkvc(NN[2][:, :, :-1])*np.nan].flatten()
X = np.r_[X1, X2, X3]
Y = np.r_[Y1, Y2, Y3]
Z = np.r_[Z1, Z2, Z3]
ax.plot(X, Y, 'b', zs=Z)
ax.set_zlabel('x3')
ax.grid(True)
ax.set_xlabel('x1')
ax.set_ylabel('x2')
if showIt: plt.show()
if __name__ == '__main__':
nc = 5
h1 = np.cumsum(np.r_[0, np.ones(nc)/(nc)])
+9 -12
View File
@@ -330,7 +330,7 @@ class CylMesh(BaseTensorMesh, BaseRectangularMesh, InnerProducts, CylView):
raise NotImplementedError('wrapping in the averaging is not yet implemented')
return self._aveF2CCV
def getInterpolationMatCartMesh(self, Mrect, locType='CC', locTypeTo=None):
def getInterpolationMatCartMesh(self, Mrect, locType='CC'):
"""
Takes a cartesian mesh and returns a projection to translate onto the cartesian grid.
"""
@@ -338,22 +338,19 @@ class CylMesh(BaseTensorMesh, BaseRectangularMesh, InnerProducts, CylView):
assert self.isSymmetric, "Currently we have not taken into account other projections for more complicated CylMeshes"
if locTypeTo is None:
locTypeTo = locType
if locType == 'F':
# do this three times for each component
X = self.getInterpolationMatCartMesh(Mrect, locType='Fx', locTypeTo=locTypeTo+'x')
Y = self.getInterpolationMatCartMesh(Mrect, locType='Fy', locTypeTo=locTypeTo+'y')
Z = self.getInterpolationMatCartMesh(Mrect, locType='Fz', locTypeTo=locTypeTo+'z')
X = self.getInterpolationMatCartMesh(Mrect, locType='Fx')
Y = self.getInterpolationMatCartMesh(Mrect, locType='Fy')
Z = self.getInterpolationMatCartMesh(Mrect, locType='Fz')
return sp.vstack((X,Y,Z))
if locType == 'E':
X = self.getInterpolationMatCartMesh(Mrect, locType='Ex', locTypeTo=locTypeTo+'x')
Y = self.getInterpolationMatCartMesh(Mrect, locType='Ey', locTypeTo=locTypeTo+'y')
Z = spzeros(getattr(Mrect, 'n' + locTypeTo + 'z'), self.nE)
X = self.getInterpolationMatCartMesh(Mrect, locType='Ex')
Y = self.getInterpolationMatCartMesh(Mrect, locType='Ey')
Z = spzeros(Mrect.nEz, self.nE)
return sp.vstack((X,Y,Z))
grid = getattr(Mrect, 'grid' + locTypeTo)
grid = getattr(Mrect, 'grid' + locType)
# This is unit circle stuff, 0 to 2*pi, starting at x-axis, rotating counter clockwise in an x-y slice
theta = - np.arctan2(grid[:,0] - self.cartesianOrigin[0], grid[:,1] - self.cartesianOrigin[1]) + np.pi/2
theta[theta < 0] += np.pi*2.0
@@ -369,7 +366,7 @@ class CylMesh(BaseTensorMesh, BaseRectangularMesh, InnerProducts, CylView):
'Ex': Mrect.tangents[:Mrect.nEx,:],
'Ey': Mrect.tangents[Mrect.nEx:(Mrect.nEx+Mrect.nEy),:],
'Ez': Mrect.tangents[-Mrect.nEz:,:],
}[locTypeTo]
}[locType]
if 'F' in locType:
normals = np.c_[np.cos(theta), np.sin(theta), np.zeros(theta.size)]
proj = ( normals * dotMe ).sum(axis=1)
+30 -109
View File
@@ -307,28 +307,24 @@ class DiffOperators(object):
return BC
_cellGradBC_list = 'neumann'
def _cellGradStencil(self):
BC = self.setCellGradBC(self._cellGradBC_list)
n = self.vnC
if(self.dim == 1):
G = ddxCellGrad(n[0], BC[0])
elif(self.dim == 2):
G1 = sp.kron(speye(n[1]), ddxCellGrad(n[0], BC[0]))
G2 = sp.kron(ddxCellGrad(n[1], BC[1]), speye(n[0]))
G = sp.vstack((G1, G2), format="csr")
elif(self.dim == 3):
G1 = kron3(speye(n[2]), speye(n[1]), ddxCellGrad(n[0], BC[0]))
G2 = kron3(speye(n[2]), ddxCellGrad(n[1], BC[1]), speye(n[0]))
G3 = kron3(ddxCellGrad(n[2], BC[2]), speye(n[1]), speye(n[0]))
G = sp.vstack((G1, G2, G3), format="csr")
return G
def cellGrad():
doc = "The cell centered Gradient, takes you to cell faces."
def fget(self):
if(self._cellGrad is None):
G = self._cellGradStencil()
BC = self.setCellGradBC(self._cellGradBC_list)
n = self.vnC
if(self.dim == 1):
G = ddxCellGrad(n[0], BC[0])
elif(self.dim == 2):
G1 = sp.kron(speye(n[1]), ddxCellGrad(n[0], BC[0]))
G2 = sp.kron(ddxCellGrad(n[1], BC[1]), speye(n[0]))
G = sp.vstack((G1, G2), format="csr")
elif(self.dim == 3):
G1 = kron3(speye(n[2]), speye(n[1]), ddxCellGrad(n[0], BC[0]))
G2 = kron3(speye(n[2]), ddxCellGrad(n[1], BC[1]), speye(n[0]))
G3 = kron3(ddxCellGrad(n[2], BC[2]), speye(n[1]), speye(n[0]))
G = sp.vstack((G1, G2, G3), format="csr")
# Compute areas of cell faces & volumes
S = self.area
V = self.aveCC2F*self.vol # Average volume between adjacent cells
@@ -365,24 +361,19 @@ class DiffOperators(object):
_cellGradBC = None
cellGradBC = property(**cellGradBC())
def _cellGradxStencil(self):
BC = ['neumann', 'neumann']
n = self.vnC
if(self.dim == 1):
G1 = ddxCellGrad(n[0], BC)
elif(self.dim == 2):
G1 = sp.kron(speye(n[1]), ddxCellGrad(n[0], BC))
elif(self.dim == 3):
G1 = kron3(speye(n[2]), speye(n[1]), ddxCellGrad(n[0], BC))
return G1
def cellGradx():
doc = "Cell centered Gradient in the x dimension. Has neumann boundary conditions."
def fget(self):
if getattr(self, '_cellGradx', None) is None:
G1 = self._cellGradxStencil()
BC = ['neumann', 'neumann']
n = self.vnC
if(self.dim == 1):
G1 = ddxCellGrad(n[0], BC)
elif(self.dim == 2):
G1 = sp.kron(speye(n[1]), ddxCellGrad(n[0], BC))
elif(self.dim == 3):
G1 = kron3(speye(n[2]), speye(n[1]), ddxCellGrad(n[0], BC))
# Compute areas of cell faces & volumes
V = self.aveCC2F*self.vol
L = self.r(self.area/V, 'F','Fx', 'V')
@@ -391,22 +382,17 @@ class DiffOperators(object):
return locals()
cellGradx = property(**cellGradx())
def _cellGradyStencil(self):
if self.dim < 2: return None
BC = ['neumann', 'neumann']
n = self.vnC
if(self.dim == 2):
G2 = sp.kron(ddxCellGrad(n[1], BC), speye(n[0]))
elif(self.dim == 3):
G2 = kron3(speye(n[2]), ddxCellGrad(n[1], BC), speye(n[0]))
return G2
def cellGrady():
doc = "Cell centered Gradient in the x dimension. Has neumann boundary conditions."
def fget(self):
if self.dim < 2: return None
if getattr(self, '_cellGrady', None) is None:
G2 = self._cellGradyStencil()
BC = ['neumann', 'neumann']
n = self.vnC
if(self.dim == 2):
G2 = sp.kron(ddxCellGrad(n[1], BC), speye(n[0]))
elif(self.dim == 3):
G2 = kron3(speye(n[2]), ddxCellGrad(n[1], BC), speye(n[0]))
# Compute areas of cell faces & volumes
V = self.aveCC2F*self.vol
L = self.r(self.area/V, 'F','Fy', 'V')
@@ -415,19 +401,14 @@ class DiffOperators(object):
return locals()
cellGrady = property(**cellGrady())
def _cellGradzStencil(self):
if self.dim < 3: return None
BC = ['neumann', 'neumann']
n = self.vnC
G3 = kron3(ddxCellGrad(n[2], BC), speye(n[1]), speye(n[0]))
return G3
def cellGradz():
doc = "Cell centered Gradient in the x dimension. Has neumann boundary conditions."
def fget(self):
if self.dim < 3: return None
if getattr(self, '_cellGradz', None) is None:
G3 = self._cellGradzStencil()
BC = ['neumann', 'neumann']
n = self.vnC
G3 = kron3(ddxCellGrad(n[2], BC), speye(n[1]), speye(n[0]))
# Compute areas of cell faces & volumes
V = self.aveCC2F*self.vol
L = self.r(self.area/V, 'F','Fz', 'V')
@@ -584,67 +565,7 @@ class DiffOperators(object):
return Pbc, Pin, Pout
def getBCProjWF_simple(self, discretization='CC'):
"""
The weak form boundary condition projection matrices
when mixed boundary condition is used
"""
if discretization is not 'CC':
raise NotImplementedError('Boundary conditions only implemented for CC discretization.')
def projBC(n):
ij = ([0,n], [0,1])
vals = [0,0]
vals[0] = 1
vals[1] = 1
return sp.csr_matrix((vals, ij), shape=(n+1,2))
def projDirichlet(n, bc):
bc = checkBC(bc)
ij = ([0,n], [0,1])
vals = [0,0]
if(bc[0] == 'dirichlet'):
vals[0] = -1
if(bc[1] == 'dirichlet'):
vals[1] = 1
return sp.csr_matrix((vals, ij), shape=(n+1,2))
BC = [['dirichlet','dirichlet'],['dirichlet','dirichlet'],['dirichlet','dirichlet']]
n = self.vnC
indF = self.faceBoundaryInd
if(self.dim == 1):
Pbc = projDirichlet(n[0], BC[0])
B = projBC(n[0])
indF = indF[0] | indF[1]
Pbc = Pbc*sdiag(self.area[indF])
elif(self.dim == 2):
Pbc1 = sp.kron(speye(n[1]), projDirichlet(n[0], BC[0]))
Pbc2 = sp.kron(projDirichlet(n[1], BC[1]), speye(n[0]))
Pbc = sp.block_diag((Pbc1, Pbc2), format="csr")
B1 = sp.kron(speye(n[1]), projBC(n[0]))
B2 = sp.kron(projBC(n[1]), speye(n[0]))
B = sp.block_diag((B1, B2), format="csr")
indF = np.r_[(indF[0] | indF[1]), (indF[2] | indF[3])]
Pbc = Pbc*sdiag(self.area[indF])
elif(self.dim == 3):
Pbc1 = kron3(speye(n[2]), speye(n[1]), projDirichlet(n[0], BC[0]))
Pbc2 = kron3(speye(n[2]), projDirichlet(n[1], BC[1]), speye(n[0]))
Pbc3 = kron3(projDirichlet(n[2], BC[2]), speye(n[1]), speye(n[0]))
Pbc = sp.block_diag((Pbc1, Pbc2, Pbc3), format="csr")
B1 = kron3(speye(n[2]), speye(n[1]), projBC(n[0]))
B2 = kron3(speye(n[2]), projBC(n[1]), speye(n[0]))
B3 = kron3(projBC(n[2]), speye(n[1]), speye(n[0]))
B = sp.block_diag((B1, B2, B3), format="csr")
indF = np.r_[(indF[0] | indF[1]), (indF[2] | indF[3]), (indF[4] | indF[5])]
Pbc = Pbc*sdiag(self.area[indF])
return Pbc, B.T
# --------------- Averaging ---------------------
@property
+2 -1
View File
@@ -21,9 +21,10 @@ class TensorMeshIO(object):
if '*' in seg:
st = seg
sp = seg.split('*')
re = int(sp[0])*(' ' + sp[1])
re = np.array(sp[0],dtype=int)*(' ' + sp[1])
line = line.replace(st,re.strip())
return np.array(line.split(),dtype=float)
# Read the file as line strings, remove lines with comment = !
msh = np.genfromtxt(fileName,delimiter='\n',dtype=np.str,comments='!')
+3 -9
View File
@@ -2131,16 +2131,10 @@ class TreeMesh(BaseTensorMesh, InnerProducts, TreeMeshIO):
def plotSlice(self, v, vType='CC',
normal='Z', ind=None, grid=True, view='real',
ax=None, clim=None, showIt=False,
pcolorOpts=None,
streamOpts=None,
gridOpts=None):
pcolorOpts={},
streamOpts={'color':'k'},
gridOpts={'color':'k', 'alpha':0.5}):
if pcolorOpts is None:
pcolorOpts = {}
if streamOpts is None:
streamOpts = {'color':'k'}
if gridOpts is None:
gridOpts = {'color':'k', 'alpha':0.5}
assert vType in ['CC','F','E']
assert self.dim == 3
+50 -106
View File
@@ -42,9 +42,9 @@ class TensorView(object):
def plotImage(self, v, vType='CC', grid=False, view='real',
ax=None, clim=None, showIt=False,
pcolorOpts=None,
streamOpts=None,
gridOpts=None,
pcolorOpts={},
streamOpts={'color':'k'},
gridOpts={'color':'k'},
numbering=True, annotationColor='w'
):
"""
@@ -84,12 +84,6 @@ class TensorView(object):
M.plotImage(v, annotationColor='k', showIt=True)
"""
if pcolorOpts is None:
pcolorOpts = {}
if streamOpts is None:
streamOpts = {'color':'k'}
if gridOpts is None:
gridOpts = {'color':'k'}
if ax is None:
fig = plt.figure()
@@ -180,9 +174,9 @@ class TensorView(object):
def plotSlice(self, v, vType='CC',
normal='Z', ind=None, grid=False, view='real',
ax=None, clim=None, showIt=False,
pcolorOpts=None,
streamOpts=None,
gridOpts=None
pcolorOpts={},
streamOpts={'color':'k'},
gridOpts={'color':'k', 'alpha':0.5}
):
"""
@@ -203,12 +197,6 @@ class TensorView(object):
M.plotSlice(M.cellGrad*b, 'F', view='vec', grid=True, showIt=True, pcolorOpts={'alpha':0.8})
"""
if pcolorOpts is None:
pcolorOpts = {}
if streamOpts is None:
streamOpts = {'color':'k'}
if gridOpts is None:
gridOpts = {'color':'k', 'alpha':0.5}
if type(vType) in [list, tuple]:
assert ax is None, "cannot specify an axis to plot on with this function."
fig, axs = plt.subplots(1,len(vType))
@@ -218,7 +206,7 @@ class TensorView(object):
return out
viewOpts = ['real','imag','abs','vec']
normalOpts = ['X', 'Y', 'Z']
vTypeOpts = ['CC', 'CCv','N','F','E','Fx','Fy','Fz','E','Ex','Ey','Ez']
vTypeOpts = ['CC', 'CCv','F','E','Fx','Fy','Fz','E','Ex','Ey','Ez']
# Some user error checking
assert vType in vTypeOpts, "vType must be in ['%s']" % "','".join(vTypeOpts)
@@ -301,17 +289,11 @@ class TensorView(object):
def _plotImage2D(self, v, vType='CC', grid=False, view='real',
ax=None, clim=None, showIt=False,
pcolorOpts=None,
streamOpts=None,
gridOpts=None
pcolorOpts={},
streamOpts={'color':'k'},
gridOpts={'color':'k'}
):
if pcolorOpts is None:
pcolorOpts = {}
if streamOpts is None:
streamOpts = {'color':'k'}
if gridOpts is None:
gridOpts = {'color':'k'}
vTypeOptsCC = ['N','CC','Fx','Fy','Ex','Ey']
vTypeOptsV = ['CCv','F','E']
vTypeOpts = vTypeOptsCC + vTypeOptsV
@@ -552,8 +534,7 @@ class CurvView(object):
def __init__(self):
pass
def plotGrid(self, ax=None, nodes=False, faces=False, centers=False, edges=False, lines=True, showIt=False):
def plotGrid(self, length=0.05, showIt=False):
"""Plot the nodal, cell-centered and staggered grids for 1,2 and 3 dimensions.
@@ -561,63 +542,60 @@ class CurvView(object):
:include-source:
from SimPEG import Mesh, Utils
X, Y = Utils.exampleLrmGrid([3,3],'rotate')
X, Y = Utils.exampleCurvGird([3,3],'rotate')
M = Mesh.CurvilinearMesh([X, Y])
M.plotGrid(showIt=True)
"""
import matplotlib.pyplot as plt
import matplotlib
from mpl_toolkits.mplot3d import Axes3D
axOpts = {'projection':'3d'} if self.dim == 3 else {}
if ax is None: ax = plt.subplot(111, **axOpts)
NN = self.r(self.gridN, 'N', 'N', 'M')
if self.dim == 2:
fig = plt.figure(2)
fig.clf()
ax = plt.subplot(111)
X1 = np.c_[mkvc(NN[0][:-1, :]), mkvc(NN[0][1:, :]), mkvc(NN[0][:-1, :])*np.nan].flatten()
Y1 = np.c_[mkvc(NN[1][:-1, :]), mkvc(NN[1][1:, :]), mkvc(NN[1][:-1, :])*np.nan].flatten()
if lines:
X1 = np.c_[mkvc(NN[0][:-1, :]), mkvc(NN[0][1:, :]), mkvc(NN[0][:-1, :])*np.nan].flatten()
Y1 = np.c_[mkvc(NN[1][:-1, :]), mkvc(NN[1][1:, :]), mkvc(NN[1][:-1, :])*np.nan].flatten()
X2 = np.c_[mkvc(NN[0][:, :-1]), mkvc(NN[0][:, 1:]), mkvc(NN[0][:, :-1])*np.nan].flatten()
Y2 = np.c_[mkvc(NN[1][:, :-1]), mkvc(NN[1][:, 1:]), mkvc(NN[1][:, :-1])*np.nan].flatten()
X2 = np.c_[mkvc(NN[0][:, :-1]), mkvc(NN[0][:, 1:]), mkvc(NN[0][:, :-1])*np.nan].flatten()
Y2 = np.c_[mkvc(NN[1][:, :-1]), mkvc(NN[1][:, 1:]), mkvc(NN[1][:, :-1])*np.nan].flatten()
X = np.r_[X1, X2]
Y = np.r_[Y1, Y2]
X = np.r_[X1, X2]
Y = np.r_[Y1, Y2]
plt.plot(X, Y)
ax.plot(X, Y, 'b-')
if centers:
ax.plot(self.gridCC[:,0],self.gridCC[:,1],'ro')
plt.hold(True)
Nx = self.r(self.normals, 'F', 'Fx', 'V')
Ny = self.r(self.normals, 'F', 'Fy', 'V')
Tx = self.r(self.tangents, 'E', 'Ex', 'V')
Ty = self.r(self.tangents, 'E', 'Ey', 'V')
# Nx = self.r(self.normals, 'F', 'Fx', 'V')
# Ny = self.r(self.normals, 'F', 'Fy', 'V')
# Tx = self.r(self.tangents, 'E', 'Ex', 'V')
# Ty = self.r(self.tangents, 'E', 'Ey', 'V')
plt.plot(self.gridN[:, 0], self.gridN[:, 1], 'bo')
# ax.plot(self.gridN[:, 0], self.gridN[:, 1], 'bo')
nX = np.c_[self.gridFx[:, 0], self.gridFx[:, 0] + Nx[0]*length, self.gridFx[:, 0]*np.nan].flatten()
nY = np.c_[self.gridFx[:, 1], self.gridFx[:, 1] + Nx[1]*length, self.gridFx[:, 1]*np.nan].flatten()
plt.plot(self.gridFx[:, 0], self.gridFx[:, 1], 'rs')
plt.plot(nX, nY, 'r-')
# nX = np.c_[self.gridFx[:, 0], self.gridFx[:, 0] + Nx[0]*length, self.gridFx[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridFx[:, 1], self.gridFx[:, 1] + Nx[1]*length, self.gridFx[:, 1]*np.nan].flatten()
# ax.plot(self.gridFx[:, 0], self.gridFx[:, 1], 'rs')
# ax.plot(nX, nY, 'r-')
nX = np.c_[self.gridFy[:, 0], self.gridFy[:, 0] + Ny[0]*length, self.gridFy[:, 0]*np.nan].flatten()
nY = np.c_[self.gridFy[:, 1], self.gridFy[:, 1] + Ny[1]*length, self.gridFy[:, 1]*np.nan].flatten()
#plt.plot(self.gridFy[:, 0], self.gridFy[:, 1], 'gs')
plt.plot(nX, nY, 'g-')
# nX = np.c_[self.gridFy[:, 0], self.gridFy[:, 0] + Ny[0]*length, self.gridFy[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridFy[:, 1], self.gridFy[:, 1] + Ny[1]*length, self.gridFy[:, 1]*np.nan].flatten()
# #ax.plot(self.gridFy[:, 0], self.gridFy[:, 1], 'gs')
# ax.plot(nX, nY, 'g-')
tX = np.c_[self.gridEx[:, 0], self.gridEx[:, 0] + Tx[0]*length, self.gridEx[:, 0]*np.nan].flatten()
tY = np.c_[self.gridEx[:, 1], self.gridEx[:, 1] + Tx[1]*length, self.gridEx[:, 1]*np.nan].flatten()
plt.plot(self.gridEx[:, 0], self.gridEx[:, 1], 'r^')
plt.plot(tX, tY, 'r-')
# tX = np.c_[self.gridEx[:, 0], self.gridEx[:, 0] + Tx[0]*length, self.gridEx[:, 0]*np.nan].flatten()
# tY = np.c_[self.gridEx[:, 1], self.gridEx[:, 1] + Tx[1]*length, self.gridEx[:, 1]*np.nan].flatten()
# ax.plot(self.gridEx[:, 0], self.gridEx[:, 1], 'r^')
# ax.plot(tX, tY, 'r-')
# nX = np.c_[self.gridEy[:, 0], self.gridEy[:, 0] + Ty[0]*length, self.gridEy[:, 0]*np.nan].flatten()
# nY = np.c_[self.gridEy[:, 1], self.gridEy[:, 1] + Ty[1]*length, self.gridEy[:, 1]*np.nan].flatten()
# #ax.plot(self.gridEy[:, 0], self.gridEy[:, 1], 'g^')
# ax.plot(nX, nY, 'g-')
nX = np.c_[self.gridEy[:, 0], self.gridEy[:, 0] + Ty[0]*length, self.gridEy[:, 0]*np.nan].flatten()
nY = np.c_[self.gridEy[:, 1], self.gridEy[:, 1] + Ty[1]*length, self.gridEy[:, 1]*np.nan].flatten()
#plt.plot(self.gridEy[:, 0], self.gridEy[:, 1], 'g^')
plt.plot(nX, nY, 'g-')
plt.axis('equal')
elif self.dim == 3:
fig = plt.figure(3)
fig.clf()
ax = fig.add_subplot(111, projection='3d')
X1 = np.c_[mkvc(NN[0][:-1, :, :]), mkvc(NN[0][1:, :, :]), mkvc(NN[0][:-1, :, :])*np.nan].flatten()
Y1 = np.c_[mkvc(NN[1][:-1, :, :]), mkvc(NN[1][1:, :, :]), mkvc(NN[1][:-1, :, :])*np.nan].flatten()
Z1 = np.c_[mkvc(NN[2][:-1, :, :]), mkvc(NN[2][1:, :, :]), mkvc(NN[2][:-1, :, :])*np.nan].flatten()
@@ -634,50 +612,16 @@ class CurvView(object):
Y = np.r_[Y1, Y2, Y3]
Z = np.r_[Z1, Z2, Z3]
ax.plot(X, Y, 'b', zs=Z)
plt.plot(X, Y, 'b', zs=Z)
ax.set_zlabel('x3')
ax.grid(True)
ax.hold(False)
ax.set_xlabel('x1')
ax.set_ylabel('x2')
if showIt: plt.show()
def plotImage(self, I, ax=None, showIt=False, grid=False, clim=None):
if self.dim == 3: raise NotImplementedError('This is not yet done!')
import matplotlib.pyplot as plt
import matplotlib
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.colors as colors
import matplotlib.cm as cmx
if ax is None: ax = plt.subplot(111)
jet = cm = plt.get_cmap('jet')
cNorm = colors.Normalize(
vmin=I.min() if clim is None else clim[0],
vmax=I.max() if clim is None else clim[1])
scalarMap = cmx.ScalarMappable(norm=cNorm, cmap=jet)
# ax.set_xlim((self.x0[0], self.h[0].sum()))
# ax.set_ylim((self.x0[1], self.h[1].sum()))
Nx = self.r(self.gridN[:,0],'N','N','M')
Ny = self.r(self.gridN[:,1],'N','N','M')
cell = self.r(I,'CC','CC','M')
for ii in range(self.nCx):
for jj in range(self.nCy):
I = [ii,ii+1,ii+1,ii]
J = [jj,jj,jj+1,jj+1]
ax.add_patch(plt.Polygon(np.c_[Nx[I,J],Ny[I,J]], facecolor=scalarMap.to_rgba(cell[ii,jj]), edgecolor='k' if grid else 'none'))
scalarMap._A = [] # http://stackoverflow.com/questions/8342549/matplotlib-add-colorbar-to-a-sequence-of-line-plots
ax.set_xlabel('x')
ax.set_ylabel('y')
if showIt: plt.show()
return [scalarMap]
if __name__ == '__main__':
from SimPEG import *
+1 -19
View File
@@ -888,8 +888,6 @@ class ProjectedGNCG(BFGS, Minimize, Remember):
maxIterCG = 5
tolCG = 1e-1
stepOffBoundsFact = 0.1 # perturbation of the inactive set off the bounds
lower = -np.inf
upper = np.inf
@@ -992,20 +990,4 @@ class ProjectedGNCG(BFGS, Minimize, Remember):
cgFlag = 1
# End CG Iterations
# Take a gradient step on the active cells if exist
if temp != self.xc.size:
rhs_a = (Active) * -self.g
dm_i = max( abs( delx ) )
dm_a = max( abs(rhs_a) )
# perturb inactive set off of bounds so that they are included in the step
delx = delx + self.stepOffBoundsFact * (rhs_a * dm_i / dm_a)
# Only keep gradients going in the right direction on the active set
indx = ((self.xc<=self.lower) & (delx < 0)) | ((self.xc>=self.upper) & (delx > 0))
delx[indx] = 0.
return delx
return delx
+2 -2
View File
@@ -74,7 +74,7 @@ class Property(object):
if linkedMap is None:
return None
linkMap = linkMapClass(None) * linkedMap
m = getattr(self, '%sModel'%linkName)
m = getattr(self, '%s'%linkName)
return linkMap.deriv( m )
m = getattr(self, '%sModel'%prop.name)
@@ -239,7 +239,7 @@ class PropMap(object):
setattr(self, '%sMap'%name, mapping)
setattr(self, '%sIndex'%name, slices.get(name, slice(nP, nP + mapping.nP)))
nP += mapping.nP
self.nP = nP
self.nP = nP
@property
def defaultInvProp(self):
+322 -800
View File
File diff suppressed because it is too large Load Diff
-1
View File
@@ -1,5 +1,4 @@
import Utils, numpy as np, scipy.sparse as sp, uuid
import gc
class BaseRx(object):
"""SimPEG Receiver Object"""
+44 -35
View File
@@ -82,14 +82,14 @@ class OrderTest(unittest.TestCase):
_meshType = meshTypes[0]
meshDimension = 3
def setupMesh(self, nc):
def makeMesh(self, nc, meshType=_meshType, meshDimension=meshDimension):
"""
For a given number of cells nc, generate a TensorMesh with uniform cells with edge length h=1/nc.
"""
if 'TensorMesh' in self._meshType:
if 'uniform' in self._meshType:
if 'TensorMesh' in meshType:
if 'uniform' in meshType:
h = [nc, nc, nc]
elif 'random' in self._meshType:
elif 'random' in meshType:
h1 = np.random.rand(nc)*nc*0.5 + nc*0.5
h2 = np.random.rand(nc)*nc*0.5 + nc*0.5
h3 = np.random.rand(nc)*nc*0.5 + nc*0.5
@@ -97,46 +97,46 @@ class OrderTest(unittest.TestCase):
else:
raise Exception('Unexpected meshType')
self.M = TensorMesh(h[:self.meshDimension])
max_h = max([np.max(hi) for hi in self.M.h])
return max_h
M = TensorMesh(h[:meshDimension])
max_h = max([np.max(hi) for hi in M.h])
return M, max_h
elif 'CylMesh' in self._meshType:
if 'uniform' in self._meshType:
elif 'CylMesh' in meshType:
if 'uniform' in meshType:
h = [nc, nc, nc]
else:
raise Exception('Unexpected meshType')
if self.meshDimension == 2:
self.M = CylMesh([h[0], 1, h[2]])
max_h = max([np.max(hi) for hi in [self.M.hx, self.M.hz]])
elif self.meshDimension == 3:
self.M = CylMesh(h)
max_h = max([np.max(hi) for hi in self.M.h])
return max_h
if meshDimension == 2:
M = CylMesh([h[0], 1, h[2]])
max_h = max([np.max(hi) for hi in [M.hx, M.hz]])
elif meshDimension == 3:
M = CylMesh(h)
max_h = max([np.max(hi) for hi in M.h])
return M, max_h
elif 'Curv' in self._meshType:
if 'uniform' in self._meshType:
elif 'Curv' in meshType:
if 'uniform' in meshType:
kwrd = 'rect'
elif 'rotate' in self._meshType:
elif 'rotate' in meshType:
kwrd = 'rotate'
else:
raise Exception('Unexpected meshType')
if self.meshDimension == 1:
if meshDimension == 1:
raise Exception('Lom not supported for 1D')
elif self.meshDimension == 2:
elif meshDimension == 2:
X, Y = Utils.exampleLrmGrid([nc, nc], kwrd)
self.M = CurvilinearMesh([X, Y])
elif self.meshDimension == 3:
M = CurvilinearMesh([X, Y])
elif meshDimension == 3:
X, Y, Z = Utils.exampleLrmGrid([nc, nc, nc], kwrd)
self.M = CurvilinearMesh([X, Y, Z])
return 1./nc
M = CurvilinearMesh([X, Y, Z])
return M, 1./nc
elif 'Tree' in self._meshType:
elif 'Tree' in meshType:
nc *= 2
if 'uniform' in self._meshType or 'notatree' in self._meshType:
if 'uniform' in meshType or 'notatree' in meshType:
h = [nc, nc, nc]
elif 'random' in self._meshType:
elif 'random' in meshType:
h1 = np.random.rand(nc)*nc*0.5 + nc*0.5
h2 = np.random.rand(nc)*nc*0.5 + nc*0.5
h3 = np.random.rand(nc)*nc*0.5 + nc*0.5
@@ -145,20 +145,29 @@ class OrderTest(unittest.TestCase):
raise Exception('Unexpected meshType')
levels = int(np.log(nc)/np.log(2))
self.M = Tree(h[:self.meshDimension], levels=levels)
M = Tree(h[:meshDimension], levels=levels)
def function(cell):
if 'notatree' in self._meshType:
if 'notatree' in meshType:
return levels - 1
r = cell.center - np.array([0.5]*len(cell.center))
dist = np.sqrt(r.dot(r))
if dist < 0.2:
return levels
return levels - 1
self.M.refine(function,balance=False)
self.M.number(balance=False)
# self.M.plotGrid(showIt=True)
max_h = max([np.max(hi) for hi in self.M.h])
return max_h
M.refine(function,balance=False)
M.number(balance=False)
# M.plotGrid(showIt=True)
max_h = max([np.max(hi) for hi in M.h])
return M, max_h
def setupMesh(self, nc):
"""
For a given number of cells nc, generate a TensorMesh with uniform cells with edge length h=1/nc.
"""
M, h = self.makeMesh(nc, meshType=self._meshType, meshDimension=self.meshDimension)
self.M = M
return h
def getError(self):
"""For given h, generate A[h], f and A(f) and return norm of error."""
+4 -14
View File
@@ -88,14 +88,12 @@ def getIndicesBlock(p0,p1,ccMesh):
# Return a tuple
return ind
def defineBlock(ccMesh,p0,p1,vals=None):
def defineBlock(ccMesh,p0,p1,vals=[0,1]):
"""
Build a block with the conductivity specified by condVal. Returns an array.
vals[0] conductivity of the block
vals[1] conductivity of the ground
"""
if vals is None:
vals = [0,1]
sigma = np.zeros(ccMesh.shape[0]) + vals[1]
ind = getIndicesBlock(p0,p1,ccMesh)
@@ -103,11 +101,7 @@ def defineBlock(ccMesh,p0,p1,vals=None):
return mkvc(sigma)
def defineElipse(ccMesh, center=None, anisotropy=None, slope=10., theta=0.):
if center is None:
center = [0,0,0]
if anisotropy is None:
anisotropy = [1,1,1]
def defineElipse(ccMesh, center=[0,0,0], anisotropy=[1,1,1], slope=10., theta=0.):
G = ccMesh.copy()
dim = ccMesh.shape[1]
for i in range(dim):
@@ -162,7 +156,7 @@ def getIndicesSphere(center,radius,ccMesh):
# Return a tuple
return ind
def defineTwoLayers(ccMesh,depth,vals=None):
def defineTwoLayers(ccMesh,depth,vals=[0,1]):
"""
Define a two layered model. Depth of the first layer must be specified.
CondVals vector with the conductivity values of the layers. Eg:
@@ -173,8 +167,6 @@ def defineTwoLayers(ccMesh,depth,vals=None):
0 depth zf
1st layer 2nd layer
"""
if vals is None:
vals = [0,1]
sigma = np.zeros(ccMesh.shape[0]) + vals[1]
dim = np.size(ccMesh[0,:])
@@ -260,7 +252,7 @@ def layeredModel(ccMesh, layerTops, layerValues):
def randomModel(shape, seed=None, anisotropy=None, its=100, bounds=None):
def randomModel(shape, seed=None, anisotropy=None, its=100, bounds=[0,1]):
"""
Create a random model by convolving a kernel with a
uniformly distributed model.
@@ -284,8 +276,6 @@ def randomModel(shape, seed=None, anisotropy=None, its=100, bounds=None):
"""
if bounds is None:
bounds = [0,1]
if seed is None:
seed = np.random.randint(1e3)
-1
View File
@@ -7,4 +7,3 @@ from CounterUtils import *
import ModelBuilder
import SolverUtils
from coordutils import *
from modelutils import *
+1 -3
View File
@@ -55,10 +55,8 @@ def hook(obj, method, name=None, overwrite=False, silent=False):
print 'Method '+name+' was not overwritten.'
def setKwargs(obj, ignore=None, **kwargs):
def setKwargs(obj, ignore=[], **kwargs):
"""Sets key word arguments (kwargs) that are present in the object, throw an error if they don't exist."""
if ignore is None:
ignore = []
for attr in kwargs:
if attr in ignore:
continue
-137
View File
@@ -1,137 +0,0 @@
from SimPEG import np, Mesh
import time as tm
import vtk, vtk.util.numpy_support as npsup
import re
def read_GOCAD_ts(tsfile):
"""
Read GOCAD triangulated surface (*.ts) file
INPUT:
tsfile: Triangulated surface
OUTPUT:
vrts : Array of vertices in XYZ coordinates [n x 3]
trgl : Array of index for triangles [m x 3]. The order of the vertices
is important and describes the normal
n = cross( (P2 - P1 ) , (P3 - P1) )
Author: @fourndo
.. note::
Remove all attributes from the GoCAD surface before exporting it!
"""
fid = open(tsfile,'r')
line = fid.readline()
# Skip all the lines until the vertices
while re.match('TFACE',line)==None:
line = fid.readline()
line = fid.readline()
vrtx = []
# Run down all the vertices and save in array
while re.match('VRTX',line):
l_input = re.split('[\s*]',line)
temp = np.array(l_input[2:5])
vrtx.append(temp.astype(np.float))
# Read next line
line = fid.readline()
vrtx = np.asarray(vrtx)
# Skip lines to the triangles
while re.match('TRGL',line)==None:
line = fid.readline()
# Run down the list of triangles
trgl = []
# Run down all the vertices and save in array
while re.match('TRGL',line):
l_input = re.split('[\s*]',line)
temp = np.array(l_input[1:4])
trgl.append(temp.astype(np.int))
# Read next line
line = fid.readline()
trgl = np.asarray(trgl)
return vrtx, trgl
def surface2inds(vrtx, trgl, mesh, boundaries=True, internal=True):
""""
Function to read gocad polystructure file and output indexes of mesh with in the structure.
"""
# Adjust the index
trgl = trgl - 1
# Make vtk pts
ptsvtk = vtk.vtkPoints()
ptsvtk.SetData(npsup.numpy_to_vtk(vrtx,deep=1))
# Make the polygon connection
polys = vtk.vtkCellArray()
for face in trgl:
poly = vtk.vtkPolygon()
poly.GetPointIds().SetNumberOfIds(len(face))
for nrv, vert in enumerate(face):
poly.GetPointIds().SetId(nrv,vert)
polys.InsertNextCell(poly)
# Make the polydata, structure of connections and vrtx
polyData = vtk.vtkPolyData()
polyData.SetPoints(ptsvtk)
polyData.SetPolys(polys)
# Make implicit func
ImpDistFunc = vtk.vtkImplicitPolyDataDistance()
ImpDistFunc.SetInput(polyData)
# Convert the mesh
vtkMesh = vtk.vtkRectilinearGrid()
vtkMesh.SetDimensions(mesh.nNx,mesh.nNy,mesh.nNz)
vtkMesh.SetXCoordinates(npsup.numpy_to_vtk(mesh.vectorNx, deep=1))
vtkMesh.SetYCoordinates(npsup.numpy_to_vtk(mesh.vectorNy, deep=1))
vtkMesh.SetZCoordinates(npsup.numpy_to_vtk(mesh.vectorNz, deep=1))
# Add indexes
vtkInd = npsup.numpy_to_vtk(np.arange(mesh.nC), deep=1)
vtkInd.SetName('Index')
vtkMesh.GetCellData().AddArray(vtkInd)
extractImpDistRectGridFilt = vtk.vtkExtractGeometry() # Object constructor
extractImpDistRectGridFilt.SetImplicitFunction(ImpDistFunc) #
extractImpDistRectGridFilt.SetInputData(vtkMesh)
if boundaries is True:
extractImpDistRectGridFilt.ExtractBoundaryCellsOn()
else:
extractImpDistRectGridFilt.ExtractBoundaryCellsOff()
if internal is True:
extractImpDistRectGridFilt.ExtractInsideOn()
else:
extractImpDistRectGridFilt.ExtractInsideOff()
print "Extracting indices from grid..."
# Executing the pipe
extractImpDistRectGridFilt.Update()
# Get index inside
insideGrid = extractImpDistRectGridFilt.GetOutput()
insideGrid = npsup.vtk_to_numpy(insideGrid.GetCellData().GetArray('Index'))
# Return the indexes inside
return insideGrid
+3 -3
View File
@@ -27,7 +27,7 @@ def mkvc(x, numDims=1):
if isinstance(x, Zero):
return x
assert isinstance(x, np.ndarray), "Vector must be a numpy array"
if numDims == 1:
@@ -422,9 +422,9 @@ class Zero(object):
def __ge__(self, v):return 0 >= v
def __gt__(self, v):return 0 > v
@property
@property
def transpose(self): return Zero()
@property
def T(self): return Zero()
-63
View File
@@ -1,63 +0,0 @@
from matutils import mkvc, ndgrid
import numpy as np
def surface2ind_topo(mesh, topo, gridLoc='CC'):
# def genActiveindfromTopo(mesh, topo):
"""
Get active indices from topography
"""
if mesh.dim == 3:
from scipy.interpolate import NearestNDInterpolator
Ftopo = NearestNDInterpolator(topo[:,:2], topo[:,2])
if gridLoc == 'CC':
XY = ndgrid(mesh.vectorCCx, mesh.vectorCCy)
Zcc = mesh.gridCC[:,2].reshape((np.prod(mesh.vnC[:2]), mesh.nCz), order='F')
gridTopo = Ftopo(XY)
actind = [gridTopo[ixy] <= Zcc[ixy,:] for ixy in range(np.prod(mesh.vnC[0]))]
actind = np.hstack(actind)
elif gridLoc == 'N':
XY = ndgrid(mesh.vectorNx, mesh.vectorNy)
gridTopo = Ftopo(XY).reshape(mesh.vnN[:2], order='F')
if mesh._meshType not in ['TENSOR', 'CYL', 'BASETENSOR']:
raise NotImplementedError('Nodal surface2ind_topo not implemented for %s mesh'%mesh._meshType)
Nz = mesh.vectorNz[1:] # TODO: this will only work for tensor meshes
actind = np.array([False]*mesh.nC).reshape(mesh.vnC, order='F')
for ii in range(mesh.nCx):
for jj in range(mesh.nCy):
actind[ii,jj,:] = [np.all(gridTopo[ii:ii+2, jj:jj+2] >= Nz[kk]) for kk in range(len(Nz)) ]
elif mesh.dim == 2:
from scipy.interpolate import interp1d
Ftopo = interp1d(topo[:,0], topo[:,1])
if gridLoc == 'CC':
gridTopo = Ftopo(mesh.gridCC[:,0])
actind = mesh.gridCC[:,1] <= gridTopo
elif gridLoc == 'N':
gridTopo = Ftopo(mesh.vectorNx)
if mesh._meshType not in ['TENSOR', 'CYL', 'BASETENSOR']:
raise NotImplementedError('Nodal surface2ind_topo not implemented for %s mesh'%mesh._meshType)
Ny = mesh.vectorNy[1:] # TODO: this will only work for tensor meshes
actind = np.array([False]*mesh.nC).reshape(mesh.vnC, order='F')
for ii in range(mesh.nCx):
actind[ii,:] = [np.all(gridTopo[ii:ii+2] > Ny[kk]) for kk in range(len(Ny)) ]
else:
raise NotImplementedError('surface2ind_topo not implemented for 1D mesh')
return mkvc(actind)
+12 -12
View File
@@ -347,10 +347,10 @@ and
TDEM Problem
============
TDEM - B formulation
====================
.. automodule:: SimPEG.EM.TDEM.TDEM
.. automodule:: SimPEG.EM.TDEM.TDEM_b
:show-inheritance:
:members:
:undoc-members:
@@ -359,7 +359,7 @@ TDEM Problem
Field Storage
=============
.. autoclass:: SimPEG.EM.TDEM.SurveyTDEM.Fields
.. autoclass:: SimPEG.EM.TDEM.SurveyTDEM.FieldsTDEM
:show-inheritance:
:members:
:undoc-members:
@@ -369,19 +369,19 @@ Field Storage
TDEM Survey Classes
===================
.. autoclass:: SimPEG.EM.TDEM.SurveyTDEM.Survey
.. autoclass:: SimPEG.EM.TDEM.SurveyTDEM.SurveyTDEM
:show-inheritance:
:members:
:undoc-members:
:inherited-members:
.. Base Classes
.. ============
Base Classes
============
.. .. automodule:: SimPEG.EM.TDEM.BaseTDEM
.. :show-inheritance:
.. :members:
.. :undoc-members:
.. :inherited-members:
.. automodule:: SimPEG.EM.TDEM.BaseTDEM
:show-inheritance:
:members:
:undoc-members:
:inherited-members:
+2 -10
View File
@@ -12,17 +12,9 @@
DC Forward Simulation
=====================
Forward model two conductive spheres in a half-space and plot a
pseudo-section. Assumes an infinite line source and measures along the
center of the spheres.
Forward model conductive spheres in a half-space and plot a pseudo-section
INPUT:
loc = Location of spheres [[x1,y1,z1],[x2,y2,z2]]
radi = Radius of spheres [r1,r2]
param = Conductivity of background and two spheres [m0,m1,m2]
surveyType = survey type 'pole-dipole' or 'dipole-dipole'
unitType = Data type "appResistivity" | "appConductivity" | "volt"
Created by @fourndo
Created by @fourndo on Mon Feb 01 19:28:06 2016
@@ -1,58 +0,0 @@
.. _examples_EM_Schenkel_Morrison_Casing:
.. --------------------------------- ..
.. ..
.. THIS FILE IS AUTO GENEREATED ..
.. ..
.. SimPEG/Examples/__init__.py ..
.. ..
.. --------------------------------- ..
EM: Schenkel and Morrison Casing Model
======================================
Here we create and run a FDEM forward simulation to calculate the vertical
current inside a steel-cased. The model is based on the Schenkel and
Morrison Casing Model, and the results are used in a 2016 SEG abstract by
Yang et al.
- Schenkel, C.J., and H.F. Morrison, 1990, Effects of well casing on potential field measurements using downhole current sources: Geophysical prospecting, 38, 663-686.
The model consists of:
- Air: Conductivity 1e-8 S/m, above z = 0
- Background: conductivity 1e-2 S/m, below z = 0
- Casing: conductivity 1e6 S/m
- 300m long
- radius of 0.1m
- thickness of 6e-3m
Inside the casing, we take the same conductivity as the background.
We are using an EM code to simulate DC, so we use frequency low enough
that the skin depth inside the casing is longer than the casing length (f
= 1e-6 Hz). The plot produced is of the current inside the casing.
These results are shown in the SEG abstract by Yang et al., 2016: 3D DC
resistivity modeling of steel casing for reservoir monitoring using
equivalent resistor network. The solver used to produce these results and
achieve the CPU time of ~30s is Mumps, which was installed using pymatsolver_
.. _pymatsolver: https://github.com/rowanc1/pymatsolver
This example is on figshare: https://dx.doi.org/10.6084/m9.figshare.3126961.v1
If you would use this example for a code comparison, or build upon it, a
citation would be much appreciated!
.. plot::
from SimPEG import Examples
Examples.EM_Schenkel_Morrison_Casing.run()
.. literalinclude:: ../../SimPEG/Examples/EM_Schenkel_Morrison_Casing.py
:language: python
:linenos:
@@ -1,4 +1,4 @@
.. _examples_Inversion_IRLS:
.. _examples_Forward_BasicDirectCurrent:
.. --------------------------------- ..
.. ..
@@ -8,19 +8,14 @@
.. ..
.. --------------------------------- ..
Inversion: Linear Problem
=========================
Here we go over the basics of creating a linear problem and inversion.
Forward BasicDirectCurrent
==========================
.. plot::
from SimPEG import Examples
Examples.Inversion_IRLS.run()
Examples.Forward_BasicDirectCurrent.run()
.. literalinclude:: ../../SimPEG/Examples/Inversion_IRLS.py
.. literalinclude:: ../../SimPEG/Examples/Forward_BasicDirectCurrent.py
:language: python
:linenos:
-25
View File
@@ -1,25 +0,0 @@
.. _examples_Mesh_Basic_ForwardDC:
.. --------------------------------- ..
.. ..
.. THIS FILE IS AUTO GENEREATED ..
.. ..
.. SimPEG/Examples/__init__.py ..
.. ..
.. --------------------------------- ..
Mesh: Basic Forward 2D DC Resistivity
=====================================
2D DC forward modeling example with Tensor and Curvilinear Meshes
.. plot::
from SimPEG import Examples
Examples.Mesh_Basic_ForwardDC.run()
.. literalinclude:: ../../SimPEG/Examples/Mesh_Basic_ForwardDC.py
:language: python
:linenos:
-24
View File
@@ -1,24 +0,0 @@
.. _examples_Utils_surface2ind_topo:
.. --------------------------------- ..
.. ..
.. THIS FILE IS AUTO GENEREATED ..
.. ..
.. SimPEG/Examples/__init__.py ..
.. ..
.. --------------------------------- ..
Here we show how to use :code:`Utils.surface2ind_topo` to identify cells below
a topographic surface.
.. plot::
from SimPEG import Examples
Examples.Utils_surface2ind_topo.run()
.. literalinclude:: ../../SimPEG/Examples/Utils_surface2ind_topo.py
:language: python
:linenos:
+6 -12
View File
@@ -5,17 +5,16 @@ SimPEG is a python package for simulation and gradient based
parameter estimation in the context of geophysical applications.
"""
import numpy as np
import os
import sys
import subprocess
from distutils.core import setup
from distutils.command.build_ext import build_ext
from setuptools import find_packages
from distutils.extension import Extension
CLASSIFIERS = [
'Development Status :: 4 - Beta',
'Intended Audience :: Developers',
@@ -52,16 +51,11 @@ if args.count("build_ext") > 0 and args.count("--inplace") == 0:
try:
from Cython.Build import cythonize
from Cython.Distutils import build_ext
cythonKwargs = dict(cmdclass={'build_ext': build_ext})
USE_CYTHON = True
except Exception, e:
USE_CYTHON = False
class NumpyBuild(build_ext):
def finalize_options(self):
build_ext.finalize_options(self)
__builtins__.__NUMPY_SETUP__ = False
import numpy
self.include_dirs.append(numpy.get_include())
cythonKwargs = dict()
ext = '.pyx' if USE_CYTHON else '.c'
@@ -100,8 +94,8 @@ setup(
classifiers=CLASSIFIERS,
platforms = ["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
use_2to3 = False,
cmdclass={'build_ext':NumpyBuild},
setup_requires=['numpy'],
include_dirs=[np.get_include()],
ext_modules = extensions,
scripts=scripts,
**cythonKwargs
)
-29
View File
@@ -1,7 +1,6 @@
import unittest
from SimPEG import *
from scipy.constants import mu_0
from SimPEG import Tests
class MyPropMap(Maps.PropMap):
@@ -188,34 +187,6 @@ class TestPropMaps(unittest.TestCase):
MyReciprocalPropMap([('sigma', iMap), ('mu', iMap)]) # This should be fine
def test_linked_derivs_sigma(self):
mesh = Mesh.TensorMesh([4,5], x0='CC')
mapping = Maps.ExpMap(mesh)
propmap = MyReciprocalPropMap([('rho', mapping)])
x0 = np.random.rand(mesh.nC)
m = propmap(x0)
# test Sigma
testme = lambda v: [1./(m.rhoMap*v), m.sigmaDeriv]
print 'Testing Rho from Sigma'
Tests.checkDerivative(testme, x0, dx=0.01*x0, num=5, plotIt=False)
def test_linked_derivs_rho(self):
mesh = Mesh.TensorMesh([4,5], x0='CC')
mapping = Maps.ExpMap(mesh)
propmap = MyReciprocalPropMap([('sigma', mapping)])
x0 = np.random.rand(mesh.nC)
m = propmap(x0)
# test Sigma
testme = lambda v: [1./(m.sigmaMap*v), m.rhoDeriv]
print 'Testing Rho from Sigma'
Tests.checkDerivative(testme, x0, dx=0.01*x0, num=5, plotIt=False)
if __name__ == '__main__':
unittest.main()
+49 -73
View File
@@ -5,8 +5,6 @@ from scipy.sparse.linalg import dsolve
import inspect
TOL = 1e-20
testReg = True
testRegMesh = True
class RegularizationTests(unittest.TestCase):
@@ -18,80 +16,44 @@ class RegularizationTests(unittest.TestCase):
mesh3 = Mesh.TensorMesh([hx, hy, hz])
self.meshlist = [mesh1,mesh2, mesh3]
if testReg:
def test_regularization(self):
for R in dir(Regularization):
r = getattr(Regularization, R)
if not inspect.isclass(r): continue
if not issubclass(r, Regularization.BaseRegularization):
continue
for i, mesh in enumerate(self.meshlist):
print 'Testing %iD'%mesh.dim
mapping = r.mapPair(mesh)
reg = r(mesh, mapping=mapping)
m = np.random.rand(mapping.nP)
reg.mref = np.ones_like(m)*np.mean(m)
print 'Check: phi_m (mref) = %f' %reg.eval(reg.mref)
passed = reg.eval(reg.mref) < TOL
self.assertTrue(passed)
print 'Check:', R
passed = Tests.checkDerivative(lambda m : [reg.eval(m), reg.evalDeriv(m)], m, plotIt=False)
self.assertTrue(passed)
print 'Check 2 Deriv:', R
passed = Tests.checkDerivative(lambda m : [reg.evalDeriv(m), reg.eval2Deriv(m)], m, plotIt=False)
self.assertTrue(passed)
def test_regularization_ActiveCells(self):
for R in dir(Regularization):
r = getattr(Regularization, R)
if not inspect.isclass(r): continue
if not issubclass(r, Regularization.BaseRegularization):
continue
for i, mesh in enumerate(self.meshlist):
print 'Testing Active Cells %iD'%(mesh.dim)
if mesh.dim == 1:
indActive = Utils.mkvc(mesh.gridCC <= 0.8)
elif mesh.dim == 2:
indActive = Utils.mkvc(mesh.gridCC[:,-1] <= 2*np.sin(2*np.pi*mesh.gridCC[:,0])+0.5)
elif mesh.dim == 3:
indActive = Utils.mkvc(mesh.gridCC[:,-1] <= 2*np.sin(2*np.pi*mesh.gridCC[:,0])+0.5 * 2*np.sin(2*np.pi*mesh.gridCC[:,1])+0.5)
for indAct in [indActive, indActive.nonzero()[0]]: # test both bool and integers
reg = r(mesh, indActive=indAct)
m = np.random.rand(mesh.nC)[indAct]
reg.mref = np.ones_like(m)*np.mean(m)
print 'Check: phi_m (mref) = %f' %reg.eval(reg.mref)
passed = reg.eval(reg.mref) < TOL
self.assertTrue(passed)
print 'Check:', R
passed = Tests.checkDerivative(lambda m : [reg.eval(m), reg.evalDeriv(m)], m, plotIt=False)
self.assertTrue(passed)
print 'Check 2 Deriv:', R
passed = Tests.checkDerivative(lambda m : [reg.evalDeriv(m), reg.eval2Deriv(m)], m, plotIt=False)
self.assertTrue(passed)
if testRegMesh:
def test_regularizationMesh(self):
def test_regularization(self):
for R in dir(Regularization):
r = getattr(Regularization, R)
if not inspect.isclass(r): continue
if not issubclass(r, Regularization.BaseRegularization):
continue
for i, mesh in enumerate(self.meshlist):
print 'Testing %iD'%mesh.dim
# mapping = r.mapPair(mesh)
# reg = r(mesh, mapping=mapping)
# m = np.random.rand(mapping.nP)
mapping = r.mapPair(mesh)
reg = r(mesh, mapping=mapping)
m = np.random.rand(mapping.nP)
reg.mref = np.ones_like(m)*np.mean(m)
print 'Check: phi_m (mref) = %f' %reg.eval(reg.mref)
passed = reg.eval(reg.mref) < TOL
self.assertTrue(passed)
print 'Check:', R
passed = Tests.checkDerivative(lambda m : [reg.eval(m), reg.evalDeriv(m)], m, plotIt=False)
self.assertTrue(passed)
print 'Check 2 Deriv:', R
passed = Tests.checkDerivative(lambda m : [reg.evalDeriv(m), reg.eval2Deriv(m)], m, plotIt=False)
self.assertTrue(passed)
def test_regularization_ActiveCells(self):
for R in dir(Regularization):
r = getattr(Regularization, R)
if not inspect.isclass(r): continue
if not issubclass(r, Regularization.BaseRegularization):
continue
for i, mesh in enumerate(self.meshlist):
print 'Testing Active Cells %iD'%(mesh.dim)
if mesh.dim == 1:
indAct = Utils.mkvc(mesh.gridCC <= 0.8)
@@ -100,9 +62,23 @@ class RegularizationTests(unittest.TestCase):
elif mesh.dim == 3:
indAct = Utils.mkvc(mesh.gridCC[:,-1] <= 2*np.sin(2*np.pi*mesh.gridCC[:,0])+0.5 * 2*np.sin(2*np.pi*mesh.gridCC[:,1])+0.5)
regmesh = Regularization.RegularizationMesh(mesh, indActive=indAct)
mapping = Maps.IdentityMap(nP=indAct.nonzero()[0].size)
assert (regmesh.vol == mesh.vol[indAct]).all()
reg = r(mesh, mapping=mapping, indActive=indAct)
m = np.random.rand(mesh.nC)[indAct]
reg.mref = np.ones_like(m)*np.mean(m)
print 'Check: phi_m (mref) = %f' %reg.eval(reg.mref)
passed = reg.eval(reg.mref) < TOL
self.assertTrue(passed)
print 'Check:', R
passed = Tests.checkDerivative(lambda m : [reg.eval(m), reg.evalDeriv(m)], m, plotIt=False)
self.assertTrue(passed)
print 'Check 2 Deriv:', R
passed = Tests.checkDerivative(lambda m : [reg.evalDeriv(m), reg.eval2Deriv(m)], m, plotIt=False)
self.assertTrue(passed)
if __name__ == '__main__':
+4 -4
View File
@@ -28,12 +28,12 @@ class FDEM_analyticTests(unittest.TestCase):
x = np.linspace(-10,10,5)
XYZ = Utils.ndgrid(x,np.r_[0],np.r_[0])
rxList = EM.FDEM.Rx.Point_e(XYZ, orientation='x', component='imag')
rxList = EM.FDEM.Rx(XYZ, 'exi')
Src0 = EM.FDEM.Src.MagDipole([rxList],loc=np.r_[0.,0.,0.], freq=freq)
survey = EM.FDEM.Survey([Src0])
prb = EM.FDEM.Problem3D_b(mesh, mapping=mapping)
prb = EM.FDEM.Problem_b(mesh, mapping=mapping)
prb.pair(survey)
try:
@@ -125,8 +125,8 @@ class FDEM_analyticTests(unittest.TestCase):
mapping = [('sigma', Maps.IdentityMap(mesh)),('mu', Maps.IdentityMap(mesh))]
prbe = EM.FDEM.Problem3D_h(mesh, mapping=mapping)
prbm = EM.FDEM.Problem3D_e(mesh, mapping=mapping)
prbe = EM.FDEM.Problem_h(mesh, mapping=mapping)
prbm = EM.FDEM.Problem_e(mesh, mapping=mapping)
prbe.pair(surveye) # pair problem and survey
prbm.pair(surveym)
+2 -2
View File
@@ -12,7 +12,7 @@ testBH = True
verbose = False
TOLEJHB = 1 # averaging and more sensitive to boundary condition violations (ie. the impact of violating the boundary conditions in each case is different.)
#TODO: choose better testing parameters to lower this
#TODO: choose better testing parameters to lower this
SrcList = ['RawVec', 'MagDipole_Bfield', 'MagDipole', 'CircularLoop']
@@ -125,4 +125,4 @@ class FDEM_CrossCheck(unittest.TestCase):
self.assertTrue(crossCheckTest(SrcList, 'b', 'h', 'hzi', verbose=verbose, TOL=TOLEJHB))
if __name__ == '__main__':
unittest.main()
unittest.main()
@@ -8,8 +8,8 @@ from SimPEG.EM.Utils.testingUtils import getFDEMProblem
testE = True
testB = True
testH = True
testJ = True
testH = False
testJ = False
verbose = False
@@ -20,8 +20,8 @@ MU = mu_0
freq = 1e-1
addrandoms = True
SrcType = ['MagDipole', 'RawVec'] #or 'MAgDipole_Bfield', 'CircularLoop', 'RawVec'
# SrcType = ['MagDipole', 'RawVec'] #or 'MAgDipole_Bfield', 'CircularLoop', 'RawVec'
SrcType = ['PrimSecCyl']
def derivTest(fdemType, comp):
-12
View File
@@ -1,12 +0,0 @@
import os
import glob
import unittest
if __name__ == '__main__':
test_file_strings = glob.glob('test_*.py')
module_strings = [str[0:len(str)-3] for str in test_file_strings]
suites = [unittest.defaultTestLoader.loadTestsFromName(str) for str
in module_strings]
testSuite = unittest.TestSuite(suites)
unittest.TextTestRunner(verbosity=2).run(testSuite)
-69
View File
@@ -1,69 +0,0 @@
import unittest
from SimPEG import Mesh, Utils, EM, Maps, np
import SimPEG.EM.Static.DC as DC
class DCProblemAnalyticTests(unittest.TestCase):
def setUp(self):
cs = 12.5
hx = [(cs,7, -1.3),(cs,61),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy],x0="CN")
sighalf = 1e-2
sigma = np.ones(mesh.nC)*sighalf
x = np.linspace(-135, 250., 20)
M = Utils.ndgrid(x-12.5, np.r_[0.])
N = Utils.ndgrid(x+12.5, np.r_[0.])
A0loc = np.r_[-150, 0.]
A1loc = np.r_[-130, 0.]
rxloc = [np.c_[M, np.zeros(20)], np.c_[N, np.zeros(20)]]
data_anal = EM.Analytics.DCAnalyticHalf(np.r_[A0loc, 0.], rxloc, sighalf, earth_type="halfspace")
rx = DC.Rx.Dipole_ky(M, N)
src0 = DC.Src.Pole([rx], A0loc)
survey = DC.Survey_ky([src0])
self.survey = survey
self.mesh = mesh
self.sigma = sigma
self.data_anal = data_anal
try:
from pymatsolver import MumpsSolver
self.Solver = MumpsSolver
except ImportError, e:
self.Solver = SolverLU
def test_Problem3D_N(self):
problem = DC.Problem2D_N(self.mesh)
problem.Solver = self.Solver
problem.pair(self.survey)
data = self.survey.dpred(self.sigma)
err= np.linalg.norm((data-self.data_anal)/self.data_anal)**2 / self.data_anal.size
if err < 0.05:
passed = True
print ">> DC analytic test for Problem3D_N is passed"
else:
passed = False
print ">> DC analytic test for Problem3D_N is failed"
self.assertTrue(passed)
def test_Problem3D_CC(self):
problem = DC.Problem2D_CC(self.mesh)
problem.Solver = self.Solver
problem.pair(self.survey)
data = self.survey.dpred(self.sigma)
err= np.linalg.norm((data-self.data_anal)/self.data_anal)**2 / self.data_anal.size
if err < 0.05:
passed = True
print ">> DC analytic test for Problem3D_CC is passed"
else:
passed = False
print ">> DC analytic test for Problem3D_CC is failed"
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import *
import SimPEG.EM.Static.DC as DC
class DCProblem_2DTestsCC(unittest.TestCase):
def setUp(self):
cs = 12.5
hx = [(cs,7, -1.3),(cs,61),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy],x0="CN")
x = np.linspace(-135, 250., 20)
M = Utils.ndgrid(x-12.5, np.r_[0.])
N = Utils.ndgrid(x+12.5, np.r_[0.])
A0loc = np.r_[-150, 0.]
A1loc = np.r_[-130, 0.]
rxloc = [np.c_[M, np.zeros(20)], np.c_[N, np.zeros(20)]]
rx = DC.Rx.Dipole_ky(M, N)
src0 = DC.Src.Pole([rx], A0loc)
src1 = DC.Src.Pole([rx], A1loc)
survey = DC.Survey_ky([src0, src1])
problem = DC.Problem2D_CC(mesh, mapping=[('rho', Maps.IdentityMap(mesh))])
problem.pair(survey)
mSynth = np.ones(mesh.nC)*1.
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e0)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-10
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
class DCProblemTestsN(unittest.TestCase):
def setUp(self):
cs = 12.5
hx = [(cs,7, -1.3),(cs,61),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy],x0="CN")
x = np.linspace(-135, 250., 20)
M = Utils.ndgrid(x-12.5, np.r_[0.])
N = Utils.ndgrid(x+12.5, np.r_[0.])
A0loc = np.r_[-150, 0.]
A1loc = np.r_[-130, 0.]
rxloc = [np.c_[M, np.zeros(20)], np.c_[N, np.zeros(20)]]
rx = DC.Rx.Dipole_ky(M, N)
src0 = DC.Src.Pole([rx], A0loc)
src1 = DC.Src.Pole([rx], A1loc)
survey = DC.Survey_ky([src0, src1])
problem = DC.Problem2D_N(mesh, mapping=[('rho', Maps.IdentityMap(mesh))])
problem.pair(survey)
mSynth = np.ones(mesh.nC)*1.
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e0)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-8
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import Mesh, Utils, EM, Maps, np
import SimPEG.EM.Static.DC as DC
class DCProblemAnalyticTests(unittest.TestCase):
def setUp(self):
cs = 25.
hx = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hy = [(cs,7, -1.3),(cs,21),(cs,7, 1.3)]
hz = [(cs,7, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
sigma = np.ones(mesh.nC)*1e-2
x = mesh.vectorCCx[(mesh.vectorCCx>-155.)&(mesh.vectorCCx<155.)]
y = mesh.vectorCCx[(mesh.vectorCCy>-155.)&(mesh.vectorCCy<155.)]
Aloc = np.r_[-200., 0., 0.]
Bloc = np.r_[200., 0., 0.]
M = Utils.ndgrid(x-25.,y, np.r_[0.])
N = Utils.ndgrid(x+25.,y, np.r_[0.])
phiA = EM.Analytics.DCAnalyticHalf(Aloc, [M,N], 1e-2, earth_type="halfspace")
phiB = EM.Analytics.DCAnalyticHalf(Bloc, [M,N], 1e-2, earth_type="halfspace")
data_anal = phiA-phiB
rx = DC.Rx.Dipole(M, N)
src = DC.Src.Dipole([rx], Aloc, Bloc)
survey = DC.Survey([src])
self.survey = survey
self.mesh = mesh
self.sigma = sigma
self.data_anal = data_anal
try:
from pymatsolver import MumpsSolver
self.Solver = MumpsSolver
except ImportError, e:
self.Solver = SolverLU
def test_Problem3D_N(self):
problem = DC.Problem3D_N(self.mesh)
problem.Solver = self.Solver
problem.pair(self.survey)
data = self.survey.dpred(self.sigma)
err= np.linalg.norm(data-self.data_anal)/np.linalg.norm(self.data_anal)
if err < 0.2:
passed = True
print ">> DC analytic test for Problem3D_N is passed"
else:
passed = False
print ">> DC analytic test for Problem3D_N is failed"
self.assertTrue(passed)
def test_Problem3D_CC(self):
problem = DC.Problem3D_CC(self.mesh)
problem.Solver = self.Solver
problem.pair(self.survey)
data = self.survey.dpred(self.sigma)
err= np.linalg.norm(data-self.data_anal)/np.linalg.norm(self.data_anal)
if err < 0.2:
passed = True
print ">> DC analytic test for Problem3D_CC is passed"
else:
passed = False
print ">> DC analytic test for Problem3D_CC is failed"
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import *
import SimPEG.EM.Static.DC as DC
class DCProblemTestsCC(unittest.TestCase):
def setUp(self):
aSpacing=2.5
nElecs=5
surveySize = nElecs*aSpacing - aSpacing
cs = surveySize/nElecs/4
mesh = Mesh.TensorMesh([
[(cs,10, -1.3),(cs,surveySize/cs),(cs,10, 1.3)],
[(cs,3, -1.3),(cs,3,1.3)],
# [(cs,5, -1.3),(cs,10)]
],'CN')
srcList = DC.Utils.WennerSrcList(nElecs, aSpacing, in2D=True)
survey = DC.Survey(srcList)
problem = DC.Problem3D_CC(mesh, mapping=[('rho', Maps.IdentityMap(mesh))])
problem.pair(survey)
mSynth = np.ones(mesh.nC)
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-10
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
class DCProblemTestsN(unittest.TestCase):
def setUp(self):
aSpacing=2.5
nElecs=10
surveySize = nElecs*aSpacing - aSpacing
cs = surveySize/nElecs/4
mesh = Mesh.TensorMesh([
[(cs,10, -1.3),(cs,surveySize/cs),(cs,10, 1.3)],
[(cs,3, -1.3),(cs,3,1.3)],
# [(cs,5, -1.3),(cs,10)]
],'CN')
srcList = DC.Utils.WennerSrcList(nElecs, aSpacing, in2D=True)
survey = DC.Survey(srcList)
problem = DC.Problem3D_N(mesh, mapping=[('rho', Maps.IdentityMap(mesh))])
problem.pair(survey)
mSynth = np.ones(mesh.nC)
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-8
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False)
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import Mesh, Utils, EM, Maps, np
import SimPEG.EM.Static.DC as DC
import SimPEG.EM.Static.IP as IP
class IPProblemAnalyticTests(unittest.TestCase):
def setUp(self):
cs = 12.5
npad=2
hx = [(cs,npad, -1.3),(cs,21),(cs,npad, 1.3)]
hy = [(cs,npad, -1.3),(cs,21),(cs,npad, 1.3)]
hz = [(cs,npad, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
x = mesh.vectorCCx[(mesh.vectorCCx>-80.)&(mesh.vectorCCx<80.)]
y = mesh.vectorCCx[(mesh.vectorCCy>-80.)&(mesh.vectorCCy<80.)]
Aloc = np.r_[-100., 0., 0.]
Bloc = np.r_[100., 0., 0.]
M = Utils.ndgrid(x-12.5,y, np.r_[0.])
N = Utils.ndgrid(x+12.5,y, np.r_[0.])
radius = 50.
xc = np.r_[0., 0., -100]
blkind = Utils.ModelBuilder.getIndicesSphere(xc, radius, mesh.gridCC)
sigmaInf = np.ones(mesh.nC)*1e-2
eta = np.zeros(mesh.nC)
eta[blkind] = 0.1
sigma0 = sigmaInf*(1.-eta)
rx = DC.Rx.Dipole(M, N)
src = DC.Src.Dipole([rx], Aloc, Bloc)
surveyDC = DC.Survey([src])
self.surveyDC = surveyDC
self.mesh = mesh
self.sigmaInf = sigmaInf
self.sigma0 = sigma0
self.src = src
self.eta = eta
try:
from pymatsolver import MumpsSolver
self.Solver = MumpsSolver
except ImportError, e:
self.Solver = SolverLU
def test_Problem3D_N(self):
problemDC = DC.Problem3D_N(self.mesh)
problemDC.Solver = self.Solver
problemDC.pair(self.surveyDC)
data0 = self.surveyDC.dpred(self.sigma0)
finf = problemDC.fields(self.sigmaInf)
datainf = self.surveyDC.dpred(self.sigmaInf, f=finf)
problemIP = IP.Problem3D_N(self.mesh, sigma=self.sigmaInf, Ainv=problemDC.Ainv, f=finf)
problemIP.Solver = self.Solver
surveyIP = IP.Survey([self.src])
problemIP.pair(surveyIP)
data_full = data0 - datainf
data = surveyIP.dpred(self.eta)
err= np.linalg.norm((data-data_full)/data_full)**2 / data_full.size
if err < 0.05:
passed = True
print ">> IP forward test for Problem3D_N is passed"
else:
passed = False
print ">> IP forward test for Problem3D_N is failed"
self.assertTrue(passed)
def test_Problem3D_CC(self):
problemDC = DC.Problem3D_CC(self.mesh)
problemDC.Solver = self.Solver
problemDC.pair(self.surveyDC)
data0 = self.surveyDC.dpred(self.sigma0)
finf = problemDC.fields(self.sigmaInf)
datainf = self.surveyDC.dpred(self.sigmaInf, f=finf)
problemIP = IP.Problem3D_CC(self.mesh, rho=1./self.sigmaInf, Ainv=problemDC.Ainv, f=finf)
problemIP.Solver = self.Solver
surveyIP = IP.Survey([self.src])
problemIP.pair(surveyIP)
data_full = data0 - datainf
data = surveyIP.dpred(self.eta)
err= np.linalg.norm((data-data_full)/data_full)**2 / data_full.size
if err < 0.05:
passed = True
print ">> IP forward test for Problem3D_CC is passed"
else:
passed = False
print ">> IP forward test for Problem3D_CC is failed"
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import *
import SimPEG.EM.Static.DC as DC
import SimPEG.EM.Static.IP as IP
class IPProblemTestsCC(unittest.TestCase):
def setUp(self):
aSpacing=2.5
nElecs=5
surveySize = nElecs*aSpacing - aSpacing
cs = surveySize/nElecs/4
mesh = Mesh.TensorMesh([
[(cs,10, -1.3),(cs,surveySize/cs),(cs,10, 1.3)],
[(cs,3, -1.3),(cs,3,1.3)],
# [(cs,5, -1.3),(cs,10)]
],'CN')
srcList = DC.Utils.WennerSrcList(nElecs, aSpacing, in2D=True)
survey = IP.Survey(srcList)
sigma = np.ones(mesh.nC)
problem = IP.Problem3D_CC(mesh, rho=1./sigma)
problem.pair(survey)
mSynth = np.ones(mesh.nC)*0.1
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-10
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
class IPProblemTestsN(unittest.TestCase):
def setUp(self):
aSpacing=2.5
nElecs=5
surveySize = nElecs*aSpacing - aSpacing
cs = surveySize/nElecs/4
mesh = Mesh.TensorMesh([
[(cs,10, -1.3),(cs,surveySize/cs),(cs,10, 1.3)],
[(cs,3, -1.3),(cs,3,1.3)],
# [(cs,5, -1.3),(cs,10)]
],'CN')
srcList = DC.Utils.WennerSrcList(nElecs, aSpacing, in2D=True)
survey = IP.Survey(srcList)
sigma = np.ones(mesh.nC)
problem = IP.Problem3D_N(mesh, sigma=sigma)
problem.pair(survey)
mSynth = np.ones(mesh.nC)*0.1
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-8
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
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import unittest
from SimPEG import *
import SimPEG
from SimPEG import Mesh, Utils, EM, Maps, np, Survey
from SimPEG.EM.Static import SIP, DC, IP
from pymatsolver import MumpsSolver
class IPProblemTestsCC(unittest.TestCase):
def setUp(self):
cs = 25.
hx = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hy = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hz = [(cs,0, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
blkind0 = Utils.ModelBuilder.getIndicesSphere(np.r_[-100., -100., -200.], 75., mesh.gridCC)
blkind1 = Utils.ModelBuilder.getIndicesSphere(np.r_[100., 100., -200.], 75., mesh.gridCC)
sigma = np.ones(mesh.nC)*1e-2
eta = np.zeros(mesh.nC)
tau = np.ones_like(sigma)*1.
eta[blkind0] = 0.1
eta[blkind1] = 0.1
tau[blkind0] = 0.1
tau[blkind1] = 0.01
x = mesh.vectorCCx[(mesh.vectorCCx>-155.)&(mesh.vectorCCx<155.)]
y = mesh.vectorCCx[(mesh.vectorCCy>-155.)&(mesh.vectorCCy<155.)]
Aloc = np.r_[-200., 0., 0.]
Bloc = np.r_[200., 0., 0.]
M = Utils.ndgrid(x-25.,y, np.r_[0.])
N = Utils.ndgrid(x+25.,y, np.r_[0.])
times = np.arange(10)*1e-3 + 1e-3
rx = SIP.Rx.Dipole(M, N, times)
src = SIP.Src.Dipole([rx], Aloc, Bloc)
survey = SIP.Survey([src])
colemap = [("eta", Maps.IdentityMap(mesh)), ("taui", Maps.IdentityMap(mesh))]
problem = SIP.Problem3D_CC(mesh, rho=1./sigma, mapping=colemap)
problem.Solver = MumpsSolver
problem.pair(survey)
mSynth = np.r_[eta, 1./tau]
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC*2)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-10
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
class IPProblemTestsN(unittest.TestCase):
def setUp(self):
cs = 25.
hx = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hy = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hz = [(cs,0, -1.3),(cs,20)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCN")
blkind0 = Utils.ModelBuilder.getIndicesSphere(np.r_[-100., -100., -200.], 75., mesh.gridCC)
blkind1 = Utils.ModelBuilder.getIndicesSphere(np.r_[100., 100., -200.], 75., mesh.gridCC)
sigma = np.ones(mesh.nC)*1e-2
eta = np.zeros(mesh.nC)
tau = np.ones_like(sigma)*1.
eta[blkind0] = 0.1
eta[blkind1] = 0.1
tau[blkind0] = 0.1
tau[blkind1] = 0.01
x = mesh.vectorCCx[(mesh.vectorCCx>-155.)&(mesh.vectorCCx<155.)]
y = mesh.vectorCCx[(mesh.vectorCCy>-155.)&(mesh.vectorCCy<155.)]
Aloc = np.r_[-200., 0., 0.]
Bloc = np.r_[200., 0., 0.]
M = Utils.ndgrid(x-25.,y, np.r_[0.])
N = Utils.ndgrid(x+25.,y, np.r_[0.])
times = np.arange(10)*1e-3 + 1e-3
rx = SIP.Rx.Dipole(M, N, times)
src = SIP.Src.Dipole([rx], Aloc, Bloc)
survey = SIP.Survey([src])
colemap = [("eta", Maps.IdentityMap(mesh)), ("taui", Maps.IdentityMap(mesh))]
problem = SIP.Problem3D_N(mesh, sigma=sigma, mapping=colemap)
problem.Solver = MumpsSolver
problem.pair(survey)
mSynth = np.r_[eta, 1./tau]
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
reg = Regularization.Tikhonov(mesh)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC*2)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-8
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
class IPProblemTestsN_air(unittest.TestCase):
def setUp(self):
cs = 25.
hx = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hy = [(cs,0, -1.3),(cs,21),(cs,0, 1.3)]
hz = [(cs,0, -1.3),(cs,20),(cs,0, 1.3)]
mesh = Mesh.TensorMesh([hx, hy, hz],x0="CCC")
blkind0 = Utils.ModelBuilder.getIndicesSphere(np.r_[-100., -100., -200.], 75., mesh.gridCC)
blkind1 = Utils.ModelBuilder.getIndicesSphere(np.r_[100., 100., -200.], 75., mesh.gridCC)
sigma = np.ones(mesh.nC)*1e-2
airind = mesh.gridCC[:,2]>0.
sigma[airind] = 1e-8
eta = np.zeros(mesh.nC)
tau = np.ones_like(sigma)*1.
eta[blkind0] = 0.1
eta[blkind1] = 0.1
tau[blkind0] = 0.1
tau[blkind1] = 0.01
actmapeta = Maps.InjectActiveCells(mesh, ~airind, 0.)
actmaptau = Maps.InjectActiveCells(mesh, ~airind, 1.)
x = mesh.vectorCCx[(mesh.vectorCCx>-155.)&(mesh.vectorCCx<155.)]
y = mesh.vectorCCx[(mesh.vectorCCy>-155.)&(mesh.vectorCCy<155.)]
Aloc = np.r_[-200., 0., 0.]
Bloc = np.r_[200., 0., 0.]
M = Utils.ndgrid(x-25.,y, np.r_[0.])
N = Utils.ndgrid(x+25.,y, np.r_[0.])
times = np.arange(10)*1e-3 + 1e-3
rx = SIP.Rx.Dipole(M, N, times)
src = SIP.Src.Dipole([rx], Aloc, Bloc)
survey = SIP.Survey([src])
colemap = [("eta", Maps.IdentityMap(mesh)*actmapeta), ("taui", Maps.IdentityMap(mesh)*actmaptau)]
problem = SIP.Problem3D_N(mesh, sigma=sigma, mapping=colemap)
problem.Solver = MumpsSolver
problem.pair(survey)
mSynth = np.r_[eta[~airind], 1./tau[~airind]]
survey.makeSyntheticData(mSynth)
# Now set up the problem to do some minimization
dmis = DataMisfit.l2_DataMisfit(survey)
regmap = Maps.IdentityMap(nP=int(mSynth[~airind].size*2))
reg = SIP.MultiRegularization(mesh, mapping=regmap, nModels=2, indActive=~airind)
opt = Optimization.InexactGaussNewton(maxIterLS=20, maxIter=10, tolF=1e-6, tolX=1e-6, tolG=1e-6, maxIterCG=6)
invProb = InvProblem.BaseInvProblem(dmis, reg, opt, beta=1e4)
inv = Inversion.BaseInversion(invProb)
self.inv = inv
self.reg = reg
self.p = problem
self.mesh = mesh
self.m0 = mSynth
self.survey = survey
self.dmis = dmis
def test_misfit(self):
derChk = lambda m: [self.survey.dpred(m), lambda mx: self.p.Jvec(self.m0, mx)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
def test_adjoint(self):
# Adjoint Test
u = np.random.rand(self.mesh.nC*self.survey.nSrc)
v = np.random.rand(self.mesh.nC)
w = np.random.rand(self.survey.dobs.shape[0])
wtJv = w.dot(self.p.Jvec(self.m0, v))
vtJtw = v.dot(self.p.Jtvec(self.m0, w))
passed = np.abs(wtJv - vtJtw) < 1e-8
print 'Adjoint Test', np.abs(wtJv - vtJtw), passed
self.assertTrue(passed)
def test_dataObj(self):
derChk = lambda m: [self.dmis.eval(m), self.dmis.evalDeriv(m)]
passed = Tests.checkDerivative(derChk, self.m0, plotIt=False, num=3)
self.assertTrue(passed)
if __name__ == '__main__':
unittest.main()
+270 -178
View File
@@ -3,218 +3,310 @@ from SimPEG import *
from SimPEG import EM
plotIt = False
tol = 1e-6
testDeriv = True
testAdjoint = True
class TDEM_bDerivTests(unittest.TestCase):
TOL = 1e-5
def setUp(self):
def setUp(prbtype='b', rxcomp='bz'):
cs = 5.
ncx = 20
ncy = 15
npad = 20
hx = [(cs,ncx), (cs,npad,1.3)]
hy = [(cs,npad,-1.3), (cs,ncy), (cs,npad,1.3)]
mesh = Mesh.CylMesh([hx,1,hy], '00C')
#
active = mesh.vectorCCz<0.
activeMap = Maps.InjectActiveCells(mesh, active, np.log(1e-8), nC=mesh.nCz)
mapping = Maps.ExpMap(mesh) * Maps.SurjectVertical1D(mesh) * activeMap
cs = 5.
ncx = 20
ncy = 6
npad = 20
hx = [(cs,ncx), (cs,npad,1.3)]
hy = [(cs,npad,-1.3), (cs,ncy), (cs,npad,1.3)]
mesh = Mesh.CylMesh([hx,1,hy], '00C')
rxOffset = 10.
rx = EM.TDEM.Rx(np.array([[rxOffset, 0., -1e-2]]), np.logspace(-4,-3, 20), rxcomp) #,]
src = EM.TDEM.Src.MagDipole([rx], loc=np.array([0., 0., 0.]))
active = mesh.vectorCCz<0.
activeMap = Maps.InjectActiveCells(mesh, active, np.log(1e-8), nC=mesh.nCz)
mapping = Maps.ExpMap(mesh) * Maps.SurjectVertical1D(mesh) * activeMap
survey = EM.TDEM.Survey([src])
rxOffset = 40.
rx = EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20), 'bz')
src = EM.TDEM.SrcTDEM_VMD_MVP([rx], loc=np.array([0., 0., 0.]))
if prbtype == 'b':
prb = EM.TDEM.Problem_b(mesh, mapping=mapping)
elif prbtype == 'e':
prb = EM.TDEM.Problem_e(mesh, mapping=mapping)
survey = EM.TDEM.SurveyTDEM([src])
prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
# prb.timeSteps = [(1e-05, 10), (1e-05, 50), (1e-05, 50) ] #, (2.5e-4, 10)]
self.prb = EM.TDEM.ProblemTDEM_b(mesh, mapping=mapping)
# self.prb.timeSteps = [1e-5]
self.prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
# self.prb.timeSteps = [(1e-05, 100)]
try:
from pymatsolver import MumpsSolver
prb.Solver = MumpsSolver
except ImportError, e:
prb.Solver = SolverLU
try:
from pymatsolver import MumpsSolver
self.prb.Solver = MumpsSolver
except ImportError, e:
self.prb.Solver = SolverLU
m = np.log(1e-1)*np.ones(prb.mapping.nP) + 1e-2*np.random.randn(prb.mapping.nP)
self.sigma = np.ones(mesh.nCz)*1e-8
self.sigma[mesh.vectorCCz<0] = 1e-1
self.sigma = np.log(self.sigma[active])
prb.pair(survey)
mesh = mesh
self.prb.pair(survey)
self.mesh = mesh
return prb, m, mesh
def test_AhVec(self):
"""
Test that fields and AhVec produce consistent results
"""
prb = self.prb
sigma = self.sigma
u = prb.fields(sigma)
Ahu = prb._AhVec(sigma, u)
V1 = Ahu[:,'b',1]
V2 = 1./prb.timeSteps[0]*prb.MfMui*u[:,'b',0]
self.assertLess(np.linalg.norm(V1-V2)/np.linalg.norm(V2), 1.e-6)
V1 = Ahu[:,'e',1]
return np.linalg.norm(V1) < 1.e-6
for i in range(2,prb.nT):
dt = prb.timeSteps[i]
V1 = Ahu[:,'b',i]
V2 = 1.0/dt*prb.MfMui*u[:,'b', i-1]
# print np.linalg.norm(V1), np.linalg.norm(V2)
self.assertLess(np.linalg.norm(V1)/np.linalg.norm(V2), 1.e-6)
V1 = Ahu[:,'e',i]
V2 = prb.MeSigma*u[:,'e',i]
# print np.linalg.norm(V1), np.linalg.norm(V2)
return np.linalg.norm(V1)/np.linalg.norm(V2), 1.e-6
def test_AhVecVSMat_OneTS(self):
prb = self.prb
prb.timeSteps = [1e-05]
sigma = self.sigma
prb.curModel = sigma
dt = prb.timeSteps[0]
a11 = 1/dt*prb.MfMui*sp.identity(prb.mesh.nF)
a12 = prb.MfMui*prb.mesh.edgeCurl
a21 = prb.mesh.edgeCurl.T*prb.MfMui
a22 = -prb.MeSigma
A = sp.bmat([[a11,a12],[a21,a22]])
f = prb.fields(sigma)
u1 = A*f.tovec()
u2 = prb._AhVec(sigma,f).tovec()
self.assertTrue(np.linalg.norm(u1-u2)/np.linalg.norm(u1)<1e-12)
def test_solveAhVSMat_OneTS(self):
prb = self.prb
prb.timeSteps = [1e-05]
sigma = self.sigma
prb.curModel = sigma
dt = prb.timeSteps[0]
a11 = 1.0/dt*prb.MfMui*sp.identity(prb.mesh.nF)
a12 = prb.MfMui*prb.mesh.edgeCurl
a21 = prb.mesh.edgeCurl.T*prb.MfMui
a22 = -prb.MeSigma
A = sp.bmat([[a11,a12],[a21,a22]])
f = prb.fields(sigma)
f[:,:,0] = {'b':0}
f[:,'b',1] = 0
self.assertTrue(np.all(np.r_[f[:,'b',1],f[:,'e',1]] == f.tovec()))
u1 = prb.solveAh(sigma,f).tovec().flatten()
u2 = sp.linalg.spsolve(A.tocsr(),f.tovec())
self.assertTrue(np.linalg.norm(u1-u2)<1e-8)
def test_solveAhVsAhVec(self):
prb = self.prb
mesh = self.prb.mesh
sigma = self.sigma
self.prb.curModel = sigma
f = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
f[:,'b',:] = 0.0
for i in range(prb.nT):
f[:,'e', i] = np.random.rand(mesh.nE, 1)
Ahf = prb._AhVec(sigma, f)
f_test = prb.solveAh(sigma, Ahf)
u1 = f.tovec()
u2 = f_test.tovec()
self.assertTrue(np.linalg.norm(u1-u2)<1e-8)
def test_DerivG(self):
"""
Test the derivative of c with respect to sigma
"""
# Random model and perturbation
sigma = np.random.rand(self.prb.mapping.nP)
f = self.prb.fields(sigma)
dm = 1000*np.random.rand(self.prb.mapping.nP)
h = 0.01
derChk = lambda m: [self.prb._AhVec(m, f).tovec(), lambda mx: self.prb.Gvec(sigma, mx, u=f).tovec()]
print '\ntest_DerivG'
passed = Tests.checkDerivative(derChk, sigma, plotIt=False, dx=dm, num=4, eps=1e-20)
return passed
def test_Deriv_dUdM(self):
prb = self.prb
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
mesh = self.mesh
sigma = self.sigma
dm = 10*np.random.rand(prb.mapping.nP)
f = prb.fields(sigma)
derChk = lambda m: [self.prb.fields(m).tovec(), lambda mx: -prb.solveAh(sigma, prb.Gvec(sigma, mx, u=f)).tovec()]
print '\n'
print 'test_Deriv_dUdM'
Tests.checkDerivative(derChk, sigma, plotIt=False, dx=dm, num=4, eps=1e-20)
def test_Deriv_J(self):
prb = self.prb
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
mesh = self.mesh
sigma = self.sigma
# d_sig = 0.8*sigma #np.random.rand(mesh.nCz)
d_sig = 10*np.random.rand(prb.mapping.nP)
class TDEM_DerivTests(unittest.TestCase):
derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(sigma, mx)]
print '\n'
print 'test_Deriv_J'
Tests.checkDerivative(derChk, sigma, plotIt=False, dx=d_sig, num=4, eps=1e-20)
# ====== TEST A ========== #
def test_projectAdjoint(self):
prb = self.prb
survey = prb.survey
mesh = self.mesh
def AderivTest(self, prbtype):
prb, m0, mesh = setUp(prbtype)
tInd = 2
if prbtype == 'b':
nu = mesh.nF
elif prbtype == 'e':
nu = mesh.nE
v = np.random.rand(nu)
# Generate random fields and data
f = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(prb.nT):
f[:,'b',i] = np.random.rand(mesh.nF, 1)
f[:,'e',i] = np.random.rand(mesh.nE, 1)
d_vec = np.random.rand(survey.nD)
d = Survey.Data(survey,v=d_vec)
def AderivFun(m):
prb.curModel = m
A = prb.getAdiag(tInd)
Av = A*v
prb.curModel = m0
ADeriv_dm = lambda dm: prb.getAdiagDeriv(tInd, v, dm)
# Check that d.T*Q*f = f.T*Q.T*d
V1 = d_vec.dot(survey.evalDeriv(None, v=f).tovec())
V2 = f.tovec().dot(survey.evalDeriv(None, v=d, adjoint=True).tovec())
return Av, ADeriv_dm
self.assertTrue((V1-V2)/np.abs(V1) < tol)
print '\n Testing ADeriv %s'%(prbtype)
Tests.checkDerivative(AderivFun, m0, plotIt=False, num=4, eps=1e-20)
def test_adjointAhVsAht(self):
prb = self.prb
mesh = self.mesh
sigma = self.sigma
def A_adjointTest(self,prbtype):
prb, m0, mesh = setUp(prbtype)
tInd = 2
f1 = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
f1[:,'b',i] = np.random.rand(mesh.nF, 1)
f1[:,'e',i] = np.random.rand(mesh.nE, 1)
print '\n Testing A_adjoint'
m = np.random.rand(prb.mapping.nP)
if prbtype == 'b':
nu = prb.mesh.nF
elif prbtype == 'e':
nu = prb.mesh.nE
f2 = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
f2[:,'b',i] = np.random.rand(mesh.nF, 1)
f2[:,'e',i] = np.random.rand(mesh.nE, 1)
v = np.random.rand(nu)
u = np.random.rand(nu)
prb.curModel = m0
V1 = f2.tovec().dot(prb._AhVec(sigma, f1).tovec())
V2 = f1.tovec().dot(prb._AhtVec(sigma, f2).tovec())
self.assertTrue(np.abs(V1-V2)/np.abs(V1) < tol)
tInd = 2 # not actually used
V1 = v.dot(prb.getAdiagDeriv(tInd, u, m))
V2 = m.dot(prb.getAdiagDeriv(tInd, u, v, adjoint=True))
passed = np.abs(V1-V2) < TOL * (np.abs(V1) + np.abs(V2))/2.
print 'AdjointTest %s'%(prbtype), V1, V2, passed
self.assertTrue(passed)
# def test_solveAhtVsAhtVec(self):
# prb = self.prb
# mesh = self.mesh
# sigma = np.random.rand(prb.mapping.nP)
def test_Aderiv_b(self):
self.AderivTest('b')
def test_Aderiv_e(self):
self.AderivTest('e')
# f1 = EM.TDEM.FieldsTDEM(mesh,prb.survey)
# for i in range(1,prb.nT+1):
# f1[:,'b',i] = np.random.rand(mesh.nF, 1)
# f1[:,'e',i] = np.random.rand(mesh.nE, 1)
def test_Aadjoint_b(self):
self.A_adjointTest('b')
def test_Aadjoint_e(self):
self.A_adjointTest('e')
# f2 = prb.solveAht(sigma, f1)
# f3 = prb._AhtVec(sigma, f2)
# ====== TEST Fields Deriv Pieces ========== #
# if True:
# import matplotlib.pyplot as plt
# plt.plot(f3.tovec(),'b')
# plt.plot(f1.tovec(),'r')
# plt.show()
# V1 = np.linalg.norm(f3.tovec()-f1.tovec())
# V2 = np.linalg.norm(f1.tovec())
# print 'AhtVsAhtVec', V1, V2, f1.tovec()
# print 'I am gunna fail this one: boo. :('
# self.assertLess(V1/V2, 1e-6)
def test_eDeriv_m_adjoint(self):
prb, m0, mesh = setUp()
tInd = 0
# def test_adjointsolveAhVssolveAht(self):
# prb = self.prb
# mesh = self.mesh
# sigma = self.sigma
v = np.random.rand(mesh.nF)
# f1 = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
# for i in range(1,prb.nT+1):
# f1[:,'b',i] = np.random.rand(mesh.nF, 1)
# f1[:,'e',i] = np.random.rand(mesh.nE, 1)
print '\n Testing eDeriv_m Adjoint'
# f2 = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
# for i in range(1,prb.nT+1):
# f2[:,'b',i] = np.random.rand(mesh.nF, 1)
# f2[:,'e',i] = np.random.rand(mesh.nE, 1)
prb, m0, mesh = setUp()
f = prb.fields(m0)
# V1 = f2.tovec().dot(prb.solveAh(sigma, f1).tovec())
# V2 = f1.tovec().dot(prb.solveAht(sigma, f2).tovec())
# print V1, V2
# self.assertLess(np.abs(V1-V2)/np.abs(V1), 1e-6)
def test_adjointGvecVsGtvec(self):
mesh = self.mesh
prb = self.prb
m = np.random.rand(prb.mapping.nP)
e = np.random.randn(prb.mesh.nE)
V1 = e.dot(f._eDeriv_m(1, prb.survey.srcList[0], m))
V2 = m.dot(f._eDeriv_m(1, prb.survey.srcList[0], e, adjoint=True))
tol = TOL * (np.abs(V1) + np.abs(V2)) / 2.
passed = np.abs(V1-V2) < tol
sigma = np.random.rand(prb.mapping.nP)
print ' ', V1, V2, np.abs(V1-V2), tol, passed
u = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
u[:,'b',i] = np.random.rand(mesh.nF, 1)
u[:,'e',i] = np.random.rand(mesh.nE, 1)
v = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
v[:,'b',i] = np.random.rand(mesh.nF, 1)
v[:,'e',i] = np.random.rand(mesh.nE, 1)
V1 = m.dot(prb.Gtvec(sigma, v, u))
V2 = v.tovec().dot(prb.Gvec(sigma, m, u).tovec())
self.assertTrue(np.abs(V1-V2)/np.abs(V1) < tol)
def test_adjointJvecVsJtvec(self):
mesh = self.mesh
prb = self.prb
sigma = self.sigma
m = np.random.rand(prb.mapping.nP)
d = np.random.rand(prb.survey.nD)
V1 = d.dot(prb.Jvec(sigma, m))
V2 = m.dot(prb.Jtvec(sigma, d))
passed = np.abs(V1-V2)/np.abs(V1) < tol
print 'AdjointTest', V1, V2, passed
self.assertTrue(passed)
def test_eDeriv_u_adjoint(self):
print '\n Testing eDeriv_u Adjoint'
prb, m0, mesh = setUp()
f = prb.fields(m0)
b = np.random.rand(prb.mesh.nF)
e = np.random.randn(prb.mesh.nE)
V1 = e.dot(f._eDeriv_u(1, prb.survey.srcList[0], b))
V2 = b.dot(f._eDeriv_u(1, prb.survey.srcList[0], e, adjoint=True))
tol = TOL * (np.abs(V1) + np.abs(V2)) / 2.
passed = np.abs(V1-V2) < tol
print ' ', V1, V2, np.abs(V1-V2), tol, passed
self.assertTrue(passed)
# ====== TEST Jvec ========== #
if testDeriv:
def JvecTest(self, prbtype, rxcomp):
prb, m, mesh = setUp(prbtype, rxcomp)
derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(m, mx)]
print '\n'
print 'test_Jvec_%s_%s' %(prbtype, rxcomp)
Tests.checkDerivative(derChk, m, plotIt=False, num=2, eps=1e-20)
def test_Jvec_b_bx(self):
self.JvecTest('b','bx')
def test_Jvec_b_bz(self):
self.JvecTest('b','bz')
def test_Jvec_b_dbxdt(self):
self.JvecTest('b','dbxdt')
def test_Jvec_b_dbzdt(self):
self.JvecTest('b','dbzdt')
def test_Jvec_b_ey(self):
self.JvecTest('b','ey')
def test_Jvec_e_ey(self):
self.JvecTest('e','ey')
# ====== TEST Jtvec ========== #
if testAdjoint:
def JvecVsJtvecTest(self, prbtype='b', rxcomp='bz'):
print '\nAdjoint Testing Jvec, Jtvec %s' %(rxcomp)
prb, m0, mesh = setUp(prbtype, rxcomp)
m = np.random.rand(prb.mapping.nP)
d = np.random.randn(prb.survey.nD)
V1 = d.dot(prb.Jvec(m0, m))
V2 = m.dot(prb.Jtvec(m0, d))
tol = TOL * (np.abs(V1) + np.abs(V2)) / 2.
passed = np.abs(V1-V2) < tol
print ' ', V1, V2, np.abs(V1-V2), tol, passed
self.assertTrue(passed)
def test_Jvec_adjoint_b_bx(self):
self.JvecVsJtvecTest('b', 'bx')
def test_Jvec_adjoint_b_bz(self):
self.JvecVsJtvecTest('b', 'bz')
def test_Jvec_adjoint_b_dbxdt(self):
self.JvecVsJtvecTest('b', 'bx')
def test_Jvec_adjoint_b_dbzdt(self):
self.JvecVsJtvecTest('b', 'bz')
def test_Jvec_adjoint_b_ey(self):
self.JvecVsJtvecTest('b', 'ey')
# This is not working because Problem_e has not done
# def test_Jvec_adjoint_e_ey(self):
# self.JvecVsJtvecTest('e', 'ey')
@@ -3,12 +3,10 @@ from SimPEG import *
from SimPEG import EM
plotIt = False
testDeriv = True
testAdjoint = True
TOL = 1e-5
class TDEM_bDerivTests(unittest.TestCase):
def setUp(self, rxcomp='bz'):
def setUp(self):
cs = 5.
ncx = 20
@@ -23,78 +21,131 @@ def setUp(self, rxcomp='bz'):
mapping = Maps.ExpMap(mesh) * Maps.SurjectVertical1D(mesh) * activeMap
rxOffset = 40.
rx = EM.TDEM.Rx(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20), rxcomp)
src = EM.TDEM.Src.MagDipole( [rx], loc=np.array([0., 0., 0.]))
rx2 = EM.TDEM.Rx(np.array([[rxOffset-10, 0., 0.]]), np.logspace(-5,-4, 25), rxcomp)
src2 = EM.TDEM.Src.MagDipole( [rx2], loc=np.array([0., 0., 0.]))
rx = EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20), 'bz')
src = EM.TDEM.SrcTDEM_VMD_MVP( [rx], loc=np.array([0., 0., 0.]))
rx2 = EM.TDEM.RxTDEM(np.array([[rxOffset-10, 0., 0.]]), np.logspace(-5,-4, 25), 'bz')
src2 = EM.TDEM.SrcTDEM_VMD_MVP( [rx2], loc=np.array([0., 0., 0.]))
survey = EM.TDEM.Survey([src,src2])
survey = EM.TDEM.SurveyTDEM([src,src2])
prb = EM.TDEM.Problem_b(mesh, mapping=mapping)
# prb.timeSteps = [1e-5]
prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
# prb.timeSteps = [(1e-05, 100)]
self.prb = EM.TDEM.ProblemTDEM_b(mesh, mapping=mapping)
# self.prb.timeSteps = [1e-5]
self.prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
# self.prb.timeSteps = [(1e-05, 100)]
try:
from pymatsolver import MumpsSolver
prb.Solver = MumpsSolver
self.prb.Solver = MumpsSolver
except ImportError, e:
prb.Solver = SolverLU
self.prb.Solver = SolverLU
m = np.log(1e-1)*np.ones(prb.mapping.nP) + 1e-2*np.random.randn(prb.mapping.nP)
self.sigma = np.ones(mesh.nCz)*1e-8
self.sigma[mesh.vectorCCz<0] = 1e-1
self.sigma = np.log(self.sigma[active])
prb.pair(survey)
self.prb.pair(survey)
self.mesh = mesh
return mesh, prb, m
def test_DerivG(self):
"""
Test the derivative of c with respect to sigma
"""
class TDEM_bDerivTests(unittest.TestCase):
# Random model and perturbation
sigma = np.random.rand(self.prb.mapping.nP)
f = self.prb.fields(sigma)
dm = 1000*np.random.rand(self.prb.mapping.nP)
h = 0.01
derChk = lambda m: [self.prb._AhVec(m, f).tovec(), lambda mx: self.prb.Gvec(sigma, mx, u=f).tovec()]
print '\ntest_DerivG'
Tests.checkDerivative(derChk, sigma, plotIt=False, dx=dm, num=4, eps=1e-20)
def test_Deriv_dUdM(self):
prb = self.prb
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
mesh = self.mesh
sigma = self.sigma
dm = 10*np.random.rand(prb.mapping.nP)
f = prb.fields(sigma)
derChk = lambda m: [self.prb.fields(m).tovec(), lambda mx: -prb.solveAh(sigma, prb.Gvec(sigma, mx, u=f)).tovec()]
print '\n'
print 'test_Deriv_dUdM'
Tests.checkDerivative(derChk, sigma, plotIt=False, dx=dm, num=4, eps=1e-20)
def test_Deriv_J(self):
prb = self.prb
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
mesh = self.mesh
sigma = self.sigma
# d_sig = 0.8*sigma #np.random.rand(mesh.nCz)
d_sig = 10*np.random.rand(prb.mapping.nP)
if testDeriv:
def Deriv_J(self, rxcomp='bz'):
derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(sigma, mx)]
print '\n'
print 'test_Deriv_J'
Tests.checkDerivative(derChk, sigma, plotIt=False, dx=d_sig, num=4, eps=1e-20)
mesh, prb, m0 = setUp(rxcomp)
def test_projectAdjoint(self):
prb = self.prb
survey = prb.survey
nSrc = survey.nSrc
mesh = self.mesh
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
# Generate random fields and data
f = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(prb.nT):
f[:,'b',i] = np.random.rand(mesh.nF, nSrc)
f[:,'e',i] = np.random.rand(mesh.nE, nSrc)
d_vec = np.random.rand(survey.nD)
d = Survey.Data(survey,v=d_vec)
derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(m0, mx)]
print '\n'
print 'test_Deriv_J %s'%rxcomp
Tests.checkDerivative(derChk, m0, plotIt=False, num=3, eps=1e-20)
# Check that d.T*Q*f = f.T*Q.T*d
V1 = d_vec.dot(survey.evalDeriv(None, v=f).tovec())
V2 = np.sum((f.tovec())*(survey.evalDeriv(None, v=d, adjoint=True).tovec()))
def test_Jvec_bx(self):
self.Deriv_J('bx')
self.assertTrue((V1-V2)/np.abs(V1) < 1e-6)
def test_Jvec_bz(self):
self.Deriv_J('bz')
def test_adjointGvecVsGtvec(self):
mesh = self.mesh
prb = self.prb
def test_Jvec_ey(self):
self.Deriv_J('ey')
m = np.random.rand(prb.mapping.nP)
sigma = np.random.rand(prb.mapping.nP)
if testAdjoint:
def adjointJvecVsJtvec(self, rxcomp='bz'):
print ' \n Testing Adjoint %s' %rxcomp
mesh, prb, m0 = setUp(rxcomp)
u = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
u[:,'b',i] = np.random.rand(mesh.nF, 2)
u[:,'e',i] = np.random.rand(mesh.nE, 2)
m = np.random.rand(prb.mapping.nP)
d = np.random.rand(prb.survey.nD)
v = EM.TDEM.FieldsTDEM(prb.mesh, prb.survey)
for i in range(1,prb.nT+1):
v[:,'b',i] = np.random.rand(mesh.nF, 2)
v[:,'e',i] = np.random.rand(mesh.nE, 2)
V1 = d.dot(prb.Jvec(m0, m))
V2 = m.dot(prb.Jtvec(m0, d))
V1 = m.dot(prb.Gtvec(sigma, v, u))
V2 = np.sum(v.tovec()*prb.Gvec(sigma, m, u).tovec())
self.assertTrue(np.abs(V1-V2)/np.abs(V1) <1e-6)
tol = TOL * (np.abs(V1) + np.abs(V2)) / 2.
passed = np.abs(V1-V2) < tol
print ' ', V1, V2, np.abs(V1-V2), tol, passed
self.assertTrue(passed)
def test_adjointJvecVsJtvec(self):
mesh = self.mesh
prb = self.prb
sigma = self.sigma
def test_JvecVsJtvec_bx(self):
self.adjointJvecVsJtvec('bx')
m = np.random.rand(prb.mapping.nP)
d = np.random.rand(prb.survey.nD)
def test_JvecVsJtvec_bz(self):
self.adjointJvecVsJtvec('bz')
def test_JvecVsJtvec_ey(self):
self.adjointJvecVsJtvec('ey')
V1 = d.dot(prb.Jvec(sigma, m))
V2 = m.dot(prb.Jtvec(sigma, d))
print 'AdjointTest', V1, V2
self.assertTrue(np.abs(V1-V2)/np.abs(V1) < 1e-6)
+94
View File
@@ -0,0 +1,94 @@
import unittest
from SimPEG import *
from SimPEG import EM
plotIt = False
def getProb(meshType='CYL',rxTypes='bx,bz',nSrc=1):
cs = 5.
ncx = 20
ncy = 6
npad = 20
hx = [(cs,ncx), (cs,npad,1.3)]
hy = [(cs,npad,-1.3), (cs,ncy), (cs,npad,1.3)]
mesh = Mesh.CylMesh([hx,1,hy], '00C')
active = mesh.vectorCCz<0.
activeMap = Maps.InjectActiveCells(mesh, active, np.log(1e-8), nC=mesh.nCz)
mapping = Maps.ExpMap(mesh) * Maps.SurjectVertical1D(mesh) * activeMap
rxOffset = 40.
srcs = []
for ii in range(nSrc):
rxs = [EM.TDEM.RxTDEM(np.array([[rxOffset, 0., 0.]]), np.logspace(-4,-3, 20 + ii), rxType) for rxType in rxTypes.split(',')]
srcs += [EM.TDEM.SrcTDEM_VMD_MVP(rxs,np.array([0., 0., 0.]))]
survey = EM.TDEM.SurveyTDEM(srcs)
prb = EM.TDEM.ProblemTDEM_b(mesh, mapping=mapping)
# prb.timeSteps = [1e-5]
prb.timeSteps = [(1e-05, 10), (5e-05, 10), (2.5e-4, 10)]
# prb.timeSteps = [(1e-05, 100)]
try:
from pymatsolver import MumpsSolver
prb.Solver = MumpsSolver
except ImportError, e:
prb.Solver = SolverLU
sigma = np.ones(mesh.nCz)*1e-8
sigma[mesh.vectorCCz<0] = 1e-1
sigma = np.log(sigma[active])
prb.pair(survey)
return prb, mesh, sigma
def dotestJvec(prb, mesh, sigma):
prb.timeSteps = [(1e-05, 10), (0.0001, 10), (0.001, 10)]
# d_sig = 0.8*sigma #np.random.rand(mesh.nCz)
d_sig = 10*np.random.rand(prb.mapping.nP)
derChk = lambda m: [prb.survey.dpred(m), lambda mx: prb.Jvec(sigma, mx)]
return Tests.checkDerivative(derChk, sigma, plotIt=False, dx=d_sig, num=2, eps=1e-20)
def dotestAdjoint(prb, mesh, sigma):
m = np.random.rand(prb.mapping.nP)
d = np.random.rand(prb.survey.nD)
V1 = d.dot(prb.Jvec(sigma, m))
V2 = m.dot(prb.Jtvec(sigma, d))
print 'AdjointTest', V1, V2
return np.abs(V1-V2)/np.abs(V1), 1e-6
class TDEM_bDerivTests(unittest.TestCase):
def test_Jvec_bx(self): self.assertTrue(dotestJvec(*getProb(rxTypes='bx')))
def test_Adjoint_bx(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='bx')))
def test_Jvec_bxbz(self): self.assertTrue(dotestJvec(*getProb(rxTypes='bx,bz')))
def test_Adjoint_bxbz(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='bx,bz')))
def test_Jvec_bxbz_2src(self): self.assertTrue(dotestJvec(*getProb(rxTypes='bx,bz',nSrc=2)))
def test_Adjoint_bxbz_2src(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='bx,bz',nSrc=2)))
def test_Jvec_bxbzbz(self): self.assertTrue(dotestJvec(*getProb(rxTypes='bx,bz,bz')))
def test_Adjoint_bxbzbz(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='bx,bz,bz')))
def test_Jvec_dbxdt(self): self.assertTrue(dotestJvec(*getProb(rxTypes='dbxdt')))
def test_Adjoint_dbxdt(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='dbxdt')))
def test_Jvec_dbzdt(self): self.assertTrue(dotestJvec(*getProb(rxTypes='dbzdt')))
def test_Adjoint_dbzdt(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='dbzdt')))
def test_Jvec_dbxdtbz(self): self.assertTrue(dotestJvec(*getProb(rxTypes='dbxdt,bz')))
def test_Adjoint_dbxdtbz(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='dbxdt,bz')))
def test_Jvec_ey(self): self.assertTrue(dotestJvec(*getProb(rxTypes='ey')))
def test_Adjoint_ey(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='ey')))
def test_Jvec_eybzdbxdt(self): self.assertTrue(dotestJvec(*getProb(rxTypes='ey,bz,dbxdt')))
def test_Adjoint_eybzdbxdt(self): self.assertLess(*dotestAdjoint(*getProb(rxTypes='ey,bz,dbxdt')))
if __name__ == '__main__':
unittest.main()

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