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Create import functions for UBCDC2D model and mesh.

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Start driver function for forward model data from example.
This commit is contained in:
D Fournier
2015-11-13 12:47:53 -08:00
parent fc0a413b3c
commit 015099e72e
7 changed files with 7176 additions and 69 deletions
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notebooks/2DinvDC.ipynb
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simpegDCIP/Dev/DC2D_fwr_obs.py
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import os
home_dir = 'C:\Users\dominiquef.MIRAGEOSCIENCE\Documents\GIT\SimPEG\simpegdc\simpegDCIP\Dev'
inpfile = 'MAG3Cfwr.inp'
os.chdir(home_dir)
#%%
from SimPEG import np, Utils, Mesh
import simpegDCIP as DC
import pylab as plt
from readUBC_DC2DMesh import readUBC_DC2DMesh
from readUBC_DC2DModel import readUBC_DC2DModel
# Load UBC mesh 2D
mesh = readUBC_DC2DMesh('mesh2d.txt')
# Load model
model = readUBC_DC2DModel('model2d.con')
# load obs file
#%% Plot model
fig, axs = plt.subplots(1,1, figsize=(10,7))
h1 = mesh.plotImage(model, ax = axs)
plt.ylim([-1000,0])
plt.xlim([0,2000])
simpegDCIP/Dev/mesh2d.txt
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4908.25 1
6349.88 1
11
0.00 975.00 39
1462.50 13
1518.75 1
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1729.69 1
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2631.45 1
3272.17 1
4233.25 1
5674.88 1
simpegDCIP/Dev/model2d.con
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simpegDCIP/Dev/obs2d_East.loc
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simpegDCIP/Dev/readUBC_DC2DMesh.py
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def readUBC_DC2DMesh(fileName):
from SimPEG import np
"""
Read UBC GIF 2DTensor mesh and generate 2D Tensor mesh in simpeg
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
@author: dominiquef
"""
# Open file
fopen = open(fileName,'r')
# Read down the file and unpack dx vector
def unpackdx(fid,nrows):
for ii in range(nrows):
line = fid.readline()
var = np.array(line.split(),dtype=float)
if ii==0:
x0= var[0]
xvec = np.ones(int(var[2])) * (var[1] - var[0]) / int(var[2])
xend = var[1]
else:
xvec = np.hstack((xvec,np.ones(int(var[1])) * (var[0] - xend) / int(var[1])))
xend = var[0]
return x0, xvec
#%% Start with dx block
# First line specifies the number of rows for x-cells
line = fopen.readline()
nl = np.array(line.split(),dtype=float)
[x0, dx] = unpackdx(fopen,nl)
#%% Move down the file until reaching the z-block
line = fopen.readline()
if not line:
line = fopen.readline()
#%% End with dz block
# First line specifies the number of rows for z-cells
line = fopen.readline()
nl = np.array(line.split(),dtype=float)
[z0, dz] = unpackdx(fopen,nl)
# Flip z0 to be the bottom of the mesh for SimPEG
z0 = z0 - sum(dz)
dz = dz[::-1]
#%% Make the mesh using SimPEG
from SimPEG import Mesh
tensMsh = Mesh.TensorMesh([dx,dz],(x0, z0))
return tensMsh
simpegDCIP/Dev/readUBC_DC2DModel.py
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def readUBC_DC2DModel(fileName):
from SimPEG import np, mkvc
"""
Read UBC GIF 2DTensor model and generate 2D Tensor model in simpeg
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
"""
# Open fileand skip header... assume that we know the mesh already
fopen = open(fileName,'r')
lines = fopen.readlines()[:]
fopen.close()
dim = np.array(lines[0].split(),dtype=float)
model = np.array(lines[1:],dtype=float)
# Permute the second dimension to flip the order
model = model.reshape(dim[1],dim[0])
model = model[::-1,:]
model = np.transpose(model, (1, 0))
model = mkvc(model)
return model