Merge branch 'master' of https://github.com/simpeg/simpeg into cylClean

Conflicts:
	SimPEG/Mesh/LogicallyRectMesh.py
	SimPEG/Mesh/TensorMesh.py
	SimPEG/Mesh/__init__.py
	SimPEG/Tests/TestUtils.py
	SimPEG/Tests/test_operators.py
This commit is contained in:
rowanc1
2014-03-06 18:17:39 -08:00
37 changed files with 1924 additions and 576 deletions
-6
View File
@@ -32,12 +32,6 @@ class BaseInversion(object):
self.opt.printers.insert(2,IterationPrinters.phi_d)
self.opt.printers.insert(3,IterationPrinters.phi_m)
if not hasattr(opt, '_bfgsH0') and hasattr(opt, 'bfgsH0'): # Check if it has been set by the user and the default is not being used.
#TODO: I don't think that this if statement is working...
print 'Setting bfgsH0 to the inverse of the modelObj2Deriv. Done using direct methods.'
opt.bfgsH0 = SimPEG.Solver(objFunc.reg.modelObj2Deriv())
#TODO: Move this to the data class?
@property
def phi_d_target(self):
+2 -2
View File
@@ -206,7 +206,7 @@ class DiffOperators(object):
if(self.dim < 3): return None
if(self._faceDivz is None):
# The number of cell centers in each direction
n = self.n
n = self.vnC
# Compute faceDivergence operator on faces
D3 = kron3(ddx(n[2]), speye(n[1]), speye(n[0]))
# Compute areas of cell faces & volumes
@@ -407,7 +407,7 @@ class DiffOperators(object):
if self.dim < 3: return None
if getattr(self, '_cellGradz', None) is None:
BC = ['neumann', 'neumann']
n = self.n
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
+225 -254
View File
@@ -1,187 +1,70 @@
from scipy import sparse as sp
from SimPEG.Utils import sub2ind, ndgrid, mkvc, getSubArray, sdiag, inv3X3BlockDiagonal, inv2X2BlockDiagonal, makePropertyTensor
from SimPEG.Utils import sub2ind, ndgrid, mkvc, getSubArray, sdiag, inv3X3BlockDiagonal, inv2X2BlockDiagonal, makePropertyTensor, invPropertyTensor, spzeros, isScalar
import numpy as np
class InnerProducts(object):
"""
Class creates the inner product matrices that you need!
InnerProducts is a base class providing inner product matrices for meshes and cannot run on its own. Inherit to your favorite Mesh class.
**Example problem for DC resistivity**
.. math::
\sigma^{-1}\mathbf{J} = \\nabla \phi
We can define in weak form by integrating with a general face function F:
.. math::
\int_{\\text{cell}}{\sigma^{-1}\mathbf{J} \cdot \mathbf{F}} = \int_{\\text{cell}}{\\nabla \phi \cdot \mathbf{F}}
\int_{\\text{cell}}{\sigma^{-1}\mathbf{J} \cdot \mathbf{F}} = \int_{\\text{cell}}{(\\nabla \cdot \mathbf{F}) \phi } + \int_{\partial \\text{cell}}{ \phi \mathbf{F} \cdot \mathbf{n}}
We can then discretize for every cell:
.. math::
v_{\\text{cell}} \sigma^{-1} (\mathbf{J}_x \mathbf{F}_x +\mathbf{J}_y \mathbf{F}_y + \mathbf{J}_z \mathbf{F}_z ) = -\phi^{\\top} v_{\\text{cell}} (\mathbf{D}_{\\text{cell}} \mathbf{F}) + \\text{BC}
We can represent this in vector form (again this is for every cell), and will generalize for the case of anisotropic (tensor) sigma.
.. math::
\mathbf{F}_c^{\\top} (\sqrt{v_{\\text{cell}}} \Sigma^{-1} \sqrt{v_{\\text{cell}}}) \mathbf{J}_c = -\phi^{\\top} v_{\\text{cell}}( v_\\text{cell}^{-1} \mathbf{D}_{\\text{cell}} \mathbf{A} \mathbf{F}) + \\text{BC}
We multiply by volume on each side of the tensor conductivity to keep symmetry in the system. Here J_c is the Cartesian J (on the faces) and must be calculated differently depending on the mesh:
.. math::
\mathbf{J}_c = \mathbf{Q}_{(i)}\mathbf{J}_\\text{TENSOR} = \mathbf{N}_{(i)}^{-1}\mathbf{Q}_{(i)}\mathbf{J}_\\text{LOM}
Here the i index refers to where we choose to approximate this integral.
We will approximate this relation at every node of the cell, there are 8 in 3D, using a projection matrix Q_i to pick the appropriate fluxes.
We will then average to the cell center. For the TENSOR mesh, this looks like:
.. math::
\mathbf{F}^{\\top}
{1\over 8}
\left(\sum_{i=1}^8
\mathbf{Q}_{(i)}^{-\\top} \sqrt{v_{\\text{cell}}} \Sigma^{-1} \sqrt{v_{\\text{cell}}} \mathbf{Q}_{(i)}
\\right)
\mathbf{J}
=
-\mathbf{F}^{\\top} \mathbf{A} \mathbf{D}_{\\text{cell}}^{\\top} \phi + \\text{BC}
\mathbf{M}(\Sigma^{-1}) \mathbf{J}
=
-\mathbf{A} \mathbf{D}_{\\text{cell}}^{\\top} \phi + \\text{BC}
\mathbf{M}(\Sigma^{-1}) = {1\over 8}
\left(\sum_{i=1}^8
\mathbf{Q}_{(i)}^{-\\top} \sqrt{v_{\\text{cell}}} \Sigma^{-1} \sqrt{v_{\\text{cell}}} \mathbf{Q}_{(i)}
\\right)
The M is returned if mu is set equal to \Sigma^{-1}.
If requested (returnP=True) the projection matricies are returned as well (ordered by nodes).
Here each P (3*nC, sum(nF)) is a combination of the projection, volume, and any normalization to Cartesian coordinates:
.. math::
\mathbf{P}_{(i)} = \sqrt{ {1\over 8} v_{\\text{cell}}} \overbrace{\mathbf{N}_{(i)}^{-1}}^{\\text{LOM only}} \mathbf{Q}_{(i)}
Note that this is completed for each cell in the mesh at the same time.
This is a base for the SimPEG.Mesh classes. This mixIn creates the all the inner product matrices that you need!
"""
def __init__(self):
raise Exception('InnerProducts is a base class providing inner product matrices for meshes and cannot run on its own. Inherit to your favorite Mesh class.')
def getFaceInnerProduct(M, mu=None, returnP=False):
def getFaceInnerProduct(self, materialProperty=None, returnP=False,
invertProperty=False, doFast=True):
"""
:param numpy.array mu: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param bool returnP: returns the projection matrices
:param bool invertProperty: inverts the material property
:param bool doFast: do a faster implementation if available.
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (sum(nF), sum(nF))
Depending on the number of columns (either 1, 3, or 6) of mu, the material property is interpreted as follows:
.. math::
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & 0 & 0 \\\\ 0 & \mu_{1} & 0 \\\\ 0 & 0 & \mu_{1} \end{matrix}\\right]
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & 0 & 0 \\\\ 0 & \mu_{2} & 0 \\\\ 0 & 0 & \mu_{3} \end{matrix}\\right]
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & \mu_{4} & \mu_{5} \\\\ \mu_{4} & \mu_{2} & \mu_{6} \\\\ \mu_{5} & \mu_{6} & \mu_{3} \end{matrix}\\right]
\mathbf{M}(\\vec{\mu}) = {1\over 8}
\left(\sum_{i=1}^8
\mathbf{J}_c^{-\\top} \sqrt{v_{\\text{cell}}} \\vec{\mu} \sqrt{v_{\\text{cell}}} \mathbf{J}_c
\\right)
If requested (returnP=True) the projection matricies are returned as well (ordered by nodes)::
P = [P000, P100, P010, P110, P001, P101, P011, P111]
Here each P (3*nC, sum(nF)) is a combination of the projection, volume, and any normalization to Cartesian coordinates:
.. math::
\mathbf{P}_{(i)} = \sqrt{ {1\over 8} v_{\\text{cell}}} \overbrace{\mathbf{N}_{(i)}^{-1}}^{\\text{LOM only}} \mathbf{Q}_{(i)}
Note that this is completed for each cell in the mesh at the same time.
**For 2D:**
Depending on the number of columns (either 1, 2, or 3) of mu, the material property is interpreted as follows:
.. math::
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & 0 \\\\ 0 & \mu_{1} \end{matrix}\\right]
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & 0 \\\\ 0 & \mu_{2} \end{matrix}\\right]
\\vec{\mu} = \left[\\begin{matrix} \mu_{1} & \mu_{3} \\\\ \mu_{3} & \mu_{2} \end{matrix}\\right]
.. math::
\mathbf{M}(\\vec{\mu}) = {1\over 4}
\left(\sum_{i=1}^4
\mathbf{J}_c^{-\\top} \sqrt{v_{\\text{cell}}} \\vec{\mu} \sqrt{v_{\\text{cell}}} \mathbf{J}_c
\\right)
If requested (returnP=True) the projection matricies are returned as well (ordered by nodes)::
P = [P00, P10, P01, P11]
Here each P (2*nC, sum(nF)) is a combination of the projection, volume, and any normalization to Cartesian coordinates:
.. math::
\mathbf{P}_{(i)} = \sqrt{ {1\over 4} v_{\\text{cell}}} \overbrace{\mathbf{N}_{(i)}^{-1}}^{\\text{LOM only}} \mathbf{Q}_{(i)}
Note that this is completed for each cell in the mesh at the same time.
:return: M, the inner product matrix (nF, nF)
"""
if M.dim == 1:
v = np.sqrt(0.5*M.vol)
V1 = sdiag(v) # We will multiply on each side to keep symmetry
fast = None
Px = _getFacePx(M)
P000 = V1*Px('fXm')
P100 = V1*Px('fXp')
elif M.dim == 2:
# Square root of cell volume multiplied by 1/4
v = np.sqrt(0.25*M.vol)
V2 = sdiag(np.r_[v, v]) # We will multiply on each side to keep symmetry
if returnP is False and hasattr(self, '_fastFaceInnerProduct') and doFast:
fast = self._fastFaceInnerProduct(materialProperty=materialProperty, invertProperty=invertProperty)
Pxx = _getFacePxx(M)
P000 = V2*Pxx('fXm', 'fYm')
P100 = V2*Pxx('fXp', 'fYm')
P010 = V2*Pxx('fXm', 'fYp')
P110 = V2*Pxx('fXp', 'fYp')
elif M.dim == 3:
# Square root of cell volume multiplied by 1/8
v = np.sqrt(0.125*M.vol)
V3 = sdiag(np.r_[v, v, v]) # We will multiply on each side to keep symmetry
if fast is not None:
return fast
Pxxx = _getFacePxxx(M)
P000 = V3*Pxxx('fXm', 'fYm', 'fZm')
P100 = V3*Pxxx('fXp', 'fYm', 'fZm')
P010 = V3*Pxxx('fXm', 'fYp', 'fZm')
P110 = V3*Pxxx('fXp', 'fYp', 'fZm')
P001 = V3*Pxxx('fXm', 'fYm', 'fZp')
P101 = V3*Pxxx('fXp', 'fYm', 'fZp')
P011 = V3*Pxxx('fXm', 'fYp', 'fZp')
P111 = V3*Pxxx('fXp', 'fYp', 'fZp')
if invertProperty:
materialProperty = invPropertyTensor(self, materialProperty)
Mu = makePropertyTensor(self, materialProperty)
d = self.dim
# We will multiply by sqrt on each side to keep symmetry
V = sp.kron(sp.identity(d), sdiag(np.sqrt((2**(-d))*self.vol)))
if d == 1:
fP = _getFacePx(self)
P000 = V*fP('fXm')
P100 = V*fP('fXp')
elif d == 2:
fP = _getFacePxx(self)
P000 = V*fP('fXm', 'fYm')
P100 = V*fP('fXp', 'fYm')
P010 = V*fP('fXm', 'fYp')
P110 = V*fP('fXp', 'fYp')
elif d == 3:
fP = _getFacePxxx(self)
P000 = V*fP('fXm', 'fYm', 'fZm')
P100 = V*fP('fXp', 'fYm', 'fZm')
P010 = V*fP('fXm', 'fYp', 'fZm')
P110 = V*fP('fXp', 'fYp', 'fZm')
P001 = V*fP('fXm', 'fYm', 'fZp')
P101 = V*fP('fXp', 'fYm', 'fZp')
P011 = V*fP('fXm', 'fYp', 'fZp')
P111 = V*fP('fXp', 'fYp', 'fZp')
Mu = makePropertyTensor(M, mu)
A = P000.T*Mu*P000 + P100.T*Mu*P100
P = [P000, P100]
if M.dim > 1:
if d > 1:
A = A + P010.T*Mu*P010 + P110.T*Mu*P110
P += [P010, P110]
if M.dim > 2:
if d > 2:
A = A + P001.T*Mu*P001 + P101.T*Mu*P101 + P011.T*Mu*P011 + P111.T*Mu*P111
P += [P001, P101, P011, P111]
if returnP:
@@ -189,91 +72,65 @@ class InnerProducts(object):
else:
return A
def getEdgeInnerProduct(M, sigma=None, returnP=False):
def getFaceInnerProductDeriv(self, materialProperty=None, v=None, P=None, doFast=True):
"""
:param numpy.array sigma: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param bool returnP: returns the projection matrices
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param numpy.array v: vector to multiply (required in the general implementation)
:param list P: list of projection matrices
:param bool doFast: do a faster implementation if available.
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (sum(nE), sum(nE))
Depending on the number of columns (either 1, 3, or 6) of sigma, the material property is interpreted as follows:
.. math::
\Sigma = \left[\\begin{matrix} \sigma_{1} & 0 & 0 \\\\ 0 & \sigma_{1} & 0 \\\\ 0 & 0 & \sigma_{1} \end{matrix}\\right]
\Sigma = \left[\\begin{matrix} \sigma_{1} & 0 & 0 \\\\ 0 & \sigma_{2} & 0 \\\\ 0 & 0 & \sigma_{3} \end{matrix}\\right]
\Sigma = \left[\\begin{matrix} \sigma_{1} & \sigma_{4} & \sigma_{5} \\\\ \sigma_{4} & \sigma_{2} & \sigma_{6} \\\\ \sigma_{5} & \sigma_{6} & \sigma_{3} \end{matrix}\\right]
What is returned:
.. math::
\mathbf{M}(\Sigma) = {1\over 8}
\left(\sum_{i=1}^8
\mathbf{J}_c^{-\\top} \sqrt{v_{\\text{cell}}} \Sigma \sqrt{v_{\\text{cell}}} \mathbf{J}_c
\\right)
If requested (returnP=True) the projection matricies are returned as well (ordered by nodes)::
P = [P000, P100, P010, P110, P001, P101, P011, P111]
Here each P (3*nC, sum(nE)) is a combination of the projection, volume, and any normalization to Cartesian coordinates:
.. math::
\mathbf{P}_{(i)} = \sqrt{ {1\over 8} v_{\\text{cell}}} \overbrace{\mathbf{N}_{(i)}^{-1}}^{\\text{LOM only}} \mathbf{Q}_{(i)}
Note that this is completed for each cell in the mesh at the same time.
**For 2D:**
Depending on the number of columns (either 1, 2, or 3) of sigma, the material property is interpreted as follows:
.. math::
\Sigma = \left[\\begin{matrix} \sigma_{1} & 0 \\\\ 0 & \sigma_{1} \end{matrix}\\right]
\Sigma = \left[\\begin{matrix} \sigma_{1} & 0 \\\\ 0 & \sigma_{2} \end{matrix}\\right]
\Sigma = \left[\\begin{matrix} \sigma_{1} & \sigma_{3} \\\\ \sigma_{3} & \sigma_{2} \end{matrix}\\right]
.. math::
\mathbf{M}(\Sigma) = {1\over 4}
\left(\sum_{i=1}^4
\mathbf{J}_c^{-\\top} \sqrt{v_{\\text{cell}}} \Sigma \sqrt{v_{\\text{cell}}} \mathbf{J}_c
\\right)
If requested (returnP=True) the projection matricies are returned as well (ordered by nodes)::
P = [P00, P10, P01, P11]
Here each P (2*nC, sum(nE)) is a combination of the projection, volume, and any normalization to Cartesian coordinates:
.. math::
\mathbf{P}_{(i)} = \sqrt{ {1\over 4} v_{\\text{cell}}} \overbrace{\mathbf{N}_{(i)}^{-1}}^{\\text{LOM only}} \mathbf{Q}_{(i)}
Note that this is completed for each cell in the mesh at the same time.
:return: dMdm, the derivative of the inner product matrix (nF, nC*nA)
"""
if M.dim == 1:
fast = None
if hasattr(self, '_fastFaceInnerProductDeriv') and doFast:
fast = self._fastFaceInnerProductDeriv(materialProperty=materialProperty, v=v)
if fast is not None:
return fast
if P is None:
M, P = self.getFaceInnerProduct(materialProperty=materialProperty, returnP=True)
return self._getInnerProductDeriv(materialProperty, v, P, self.nF)
def getEdgeInnerProduct(self, materialProperty=None, returnP=False,
invertProperty=False, doFast=True):
"""
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param bool returnP: returns the projection matrices
:param bool invertProperty: inverts the material property
:param bool doFast: do a faster implementation if available.
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nE, nE)
"""
fast = None
if returnP is False and hasattr(self, '_fastEdgeInnerProduct') and doFast:
fast = self._fastEdgeInnerProduct(materialProperty=materialProperty, invertProperty=invertProperty)
if fast is not None:
return fast
if invertProperty:
materialProperty = invPropertyTensor(self, materialProperty)
Mu = makePropertyTensor(self, materialProperty)
d = self.dim
# We will multiply by sqrt on each side to keep symmetry
V = sp.kron(sp.identity(d), sdiag(np.sqrt((2**(-d))*self.vol)))
if d == 1:
raise NotImplementedError('getEdgeInnerProduct not implemented for 1D')
# We will multiply by V on each side to keep symmetry
elif M.dim == 2:
# Square root of cell volume multiplied by 1/4
v = np.sqrt(0.25*M.vol)
V = sdiag(np.r_[v, v])
eP = _getEdgePxx(M)
elif d == 2:
eP = _getEdgePxx(self)
P000 = V*eP('eX0', 'eY0')
P100 = V*eP('eX0', 'eY1')
P010 = V*eP('eX1', 'eY0')
P110 = V*eP('eX1', 'eY1')
elif M.dim == 3:
# Square root of cell volume multiplied by 1/8
v = np.sqrt(0.125*M.vol)
V = sdiag(np.r_[v, v, v])
eP = _getEdgePxxx(M)
elif d == 3:
eP = _getEdgePxxx(self)
P000 = V*eP('eX0', 'eY0', 'eZ0')
P100 = V*eP('eX0', 'eY1', 'eZ1')
P010 = V*eP('eX1', 'eY0', 'eZ2')
@@ -283,17 +140,131 @@ class InnerProducts(object):
P011 = V*eP('eX3', 'eY2', 'eZ2')
P111 = V*eP('eX3', 'eY3', 'eZ3')
Sigma = makePropertyTensor(M, sigma)
A = P000.T*Sigma*P000 + P100.T*Sigma*P100 + P010.T*Sigma*P010 + P110.T*Sigma*P110
Mu = makePropertyTensor(self, materialProperty)
A = P000.T*Mu*P000 + P100.T*Mu*P100 + P010.T*Mu*P010 + P110.T*Mu*P110
P = [P000, P100, P010, P110]
if M.dim == 3:
A = A + P001.T*Sigma*P001 + P101.T*Sigma*P101 + P011.T*Sigma*P011 + P111.T*Sigma*P111
if d == 3:
A = A + P001.T*Mu*P001 + P101.T*Mu*P101 + P011.T*Mu*P011 + P111.T*Mu*P111
P += [P001, P101, P011, P111]
if returnP:
return A, P
else:
return A
def getEdgeInnerProductDeriv(self, materialProperty=None, v=None, P=None, doFast=True):
"""
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param numpy.array v: vector to multiply (required in the general implementation)
:param list P: list of projection matrices
:param bool doFast: do a faster implementation if available.
:rtype: scipy.csr_matrix
:return: dMdm, the derivative of the inner product matrix (nE, nC*nA)
"""
fast = None
if hasattr(self, '_fastEdgeInnerProductDeriv') and doFast:
fast = self._fastEdgeInnerProductDeriv(materialProperty=materialProperty, v=v)
if fast is not None:
return fast
if P is None:
M, P = self.getEdgeInnerProduct(materialProperty=materialProperty, returnP=True)
return self._getInnerProductDeriv(materialProperty, v, P, self.nE)
def _getInnerProductDeriv(self, materialProperty, v, P, n):
"""
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param numpy.array v: vector to multiply (required in the general implementation)
:param list P: list of projection matrices
:param int n: nF or nE
:rtype: scipy.csr_matrix
:return: dMdm, the derivative of the inner product matrix (n, nC*nA)
"""
if materialProperty is None:
return None
if v is None:
raise Exception('v must be supplied for this implementation.')
d = self.dim
Z = spzeros(self.nC, self.nC)
if isScalar(materialProperty):
dMdm = spzeros(n, 1)
for i, p in enumerate(P):
dMdm = dMdm + sp.csr_matrix((p.T * (p * v), (range(n), np.zeros(n))), shape=(n,1))
if d == 1:
if materialProperty.size == self.nC:
dMdm = spzeros(n, self.nC)
for i, p in enumerate(P):
dMdm = dMdm + p.T * sdiag( p * v )
elif d == 2:
if materialProperty.size == self.nC:
dMdm = spzeros(n, self.nC)
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:]
dMdm = dMdm + p.T * sp.vstack((sdiag( y1 ), sdiag( y2 )))
elif materialProperty.size == self.nC*2:
dMdms = [spzeros(n, self.nC) for _ in range(2)]
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:]
dMdms[0] = dMdms[0] + p.T * sp.vstack(( sdiag( y1 ), Z))
dMdms[1] = dMdms[1] + p.T * sp.vstack(( Z, sdiag( y2 )))
dMdm = sp.hstack(dMdms)
elif materialProperty.size == self.nC*3:
dMdms = [spzeros(n, self.nC) for _ in range(3)]
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:]
dMdms[0] = dMdms[0] + p.T * sp.vstack(( sdiag( y1 ), Z))
dMdms[1] = dMdms[1] + p.T * sp.vstack(( Z, sdiag( y2 )))
dMdms[2] = dMdms[2] + p.T * sp.vstack(( sdiag( y2 ), sdiag( y1 )))
dMdm = sp.hstack(dMdms)
elif d == 3:
if materialProperty.size == self.nC:
dMdm = spzeros(n, self.nC)
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:self.nC*2]
y3 = Y[self.nC*2:]
dMdm = dMdm + p.T * sp.vstack((sdiag( y1 ), sdiag( y2 ), sdiag( y3 )))
elif materialProperty.size == self.nC*3:
dMdms = [spzeros(n, self.nC) for _ in range(3)]
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:self.nC*2]
y3 = Y[self.nC*2:]
dMdms[0] = dMdms[0] + p.T * sp.vstack(( sdiag( y1 ), Z, Z))
dMdms[1] = dMdms[1] + p.T * sp.vstack(( Z, sdiag( y2 ), Z))
dMdms[2] = dMdms[2] + p.T * sp.vstack(( Z, Z, sdiag( y3 )))
dMdm = sp.hstack(dMdms)
elif materialProperty.size == self.nC*6:
dMdms = [spzeros(n, self.nC) for _ in range(6)]
for i, p in enumerate(P):
Y = p * v
y1 = Y[:self.nC]
y2 = Y[self.nC:self.nC*2]
y3 = Y[self.nC*2:]
dMdms[0] = dMdms[0] + p.T * sp.vstack(( sdiag( y1 ), Z, Z))
dMdms[1] = dMdms[1] + p.T * sp.vstack(( Z, sdiag( y2 ), Z))
dMdms[2] = dMdms[2] + p.T * sp.vstack(( Z, Z, sdiag( y3 )))
dMdms[3] = dMdms[3] + p.T * sp.vstack(( sdiag( y2 ), sdiag( y1 ), Z))
dMdms[4] = dMdms[4] + p.T * sp.vstack(( sdiag( y3 ), Z, sdiag( y1 )))
dMdms[5] = dMdms[5] + p.T * sp.vstack(( Z, sdiag( y3 ), sdiag( y2 )))
dMdm = sp.hstack(dMdms)
return dMdm
# ------------------------ Geometries ------------------------------
#
#
@@ -380,11 +351,11 @@ def _getFacePxx_Rectangular(M):
0 1
f2(Ym)
Pxx('m','m') = | 1, 0, 0, 0 |
| 0, 0, 1, 0 |
Pxx('fXm','fYm') = | 1, 0, 0, 0 |
| 0, 0, 1, 0 |
Pxx('p','m') = | 0, 1, 0, 0 |
| 0, 0, 1, 0 |
Pxx('fXp','fYm') = | 0, 1, 0, 0 |
| 0, 0, 1, 0 |
"""
i, j = np.int64(range(M.nCx)), np.int64(range(M.nCy))
@@ -392,7 +363,7 @@ def _getFacePxx_Rectangular(M):
iijj = ndgrid(i, j)
ii, jj = iijj[:, 0], iijj[:, 1]
if M._meshType == 'LOM':
if M._meshType == 'LRM':
fN1 = M.r(M.normals, 'F', 'Fx', 'M')
fN2 = M.r(M.normals, 'F', 'Fy', 'M')
@@ -417,7 +388,7 @@ def _getFacePxx_Rectangular(M):
PXX = sp.csr_matrix((np.ones(2*M.nC), (range(2*M.nC), IND)), shape=(2*M.nC, M.nF))
if M._meshType == 'LOM':
if M._meshType == 'LRM':
I2x2 = inv2X2BlockDiagonal(getSubArray(fN1[0], [i + posFx, j]), getSubArray(fN1[1], [i + posFx, j]),
getSubArray(fN2[0], [i, j + posFy]), getSubArray(fN2[1], [i, j + posFy]))
PXX = I2x2 * PXX
@@ -440,7 +411,7 @@ def _getFacePxxx_Rectangular(M):
iijjkk = ndgrid(i, j, k)
ii, jj, kk = iijjkk[:, 0], iijjkk[:, 1], iijjkk[:, 2]
if M._meshType == 'LOM':
if M._meshType == 'LRM':
fN1 = M.r(M.normals, 'F', 'Fx', 'M')
fN2 = M.r(M.normals, 'F', 'Fy', 'M')
fN3 = M.r(M.normals, 'F', 'Fz', 'M')
@@ -474,7 +445,7 @@ def _getFacePxxx_Rectangular(M):
PXXX = sp.coo_matrix((np.ones(3*M.nC), (range(3*M.nC), IND)), shape=(3*M.nC, M.nF)).tocsr()
if M._meshType == 'LOM':
if M._meshType == 'LRM':
I3x3 = inv3X3BlockDiagonal(getSubArray(fN1[0], [i + posX, j, k]), getSubArray(fN1[1], [i + posX, j, k]), getSubArray(fN1[2], [i + posX, j, k]),
getSubArray(fN2[0], [i, j + posY, k]), getSubArray(fN2[1], [i, j + posY, k]), getSubArray(fN2[2], [i, j + posY, k]),
getSubArray(fN3[0], [i, j, k + posZ]), getSubArray(fN3[1], [i, j, k + posZ]), getSubArray(fN3[2], [i, j, k + posZ]))
@@ -489,7 +460,7 @@ def _getEdgePxx_Rectangular(M):
iijj = ndgrid(i, j)
ii, jj = iijj[:, 0], iijj[:, 1]
if M._meshType == 'LOM':
if M._meshType == 'LRM':
eT1 = M.r(M.tangents, 'E', 'Ex', 'M')
eT2 = M.r(M.tangents, 'E', 'Ey', 'M')
@@ -509,7 +480,7 @@ def _getEdgePxx_Rectangular(M):
PXX = sp.coo_matrix((np.ones(2*M.nC), (range(2*M.nC), IND)), shape=(2*M.nC, M.nE)).tocsr()
if M._meshType == 'LOM':
if M._meshType == 'LRM':
I2x2 = inv2X2BlockDiagonal(getSubArray(eT1[0], [i, j + posX]), getSubArray(eT1[1], [i, j + posX]),
getSubArray(eT2[0], [i + posY, j]), getSubArray(eT2[1], [i + posY, j]))
PXX = I2x2 * PXX
@@ -523,7 +494,7 @@ def _getEdgePxxx_Rectangular(M):
iijjkk = ndgrid(i, j, k)
ii, jj, kk = iijjkk[:, 0], iijjkk[:, 1], iijjkk[:, 2]
if M._meshType == 'LOM':
if M._meshType == 'LRM':
eT1 = M.r(M.tangents, 'E', 'Ex', 'M')
eT2 = M.r(M.tangents, 'E', 'Ey', 'M')
eT3 = M.r(M.tangents, 'E', 'Ez', 'M')
@@ -552,7 +523,7 @@ def _getEdgePxxx_Rectangular(M):
PXXX = sp.coo_matrix((np.ones(3*M.nC), (range(3*M.nC), IND)), shape=(3*M.nC, M.nE)).tocsr()
if M._meshType == 'LOM':
if M._meshType == 'LRM':
I3x3 = inv3X3BlockDiagonal(getSubArray(eT1[0], [i, j + posX[0], k + posX[1]]), getSubArray(eT1[1], [i, j + posX[0], k + posX[1]]), getSubArray(eT1[2], [i, j + posX[0], k + posX[1]]),
getSubArray(eT2[0], [i + posY[0], j, k + posY[1]]), getSubArray(eT2[1], [i + posY[0], j, k + posY[1]]), getSubArray(eT2[2], [i + posY[0], j, k + posY[1]]),
getSubArray(eT3[0], [i + posZ[0], j + posZ[1], k]), getSubArray(eT3[1], [i + posZ[0], j + posZ[1], k]), getSubArray(eT3[2], [i + posZ[0], j + posZ[1], k]))
@@ -2,7 +2,6 @@ from SimPEG import Utils, np
from BaseMesh import BaseRectangularMesh
from DiffOperators import DiffOperators
from InnerProducts import InnerProducts
from View import LomView
# Some helper functions.
length2D = lambda x: (x[:, 0]**2 + x[:, 1]**2)**0.5
@@ -11,24 +10,24 @@ 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 LogicallyOrthogonalMesh(BaseRectangularMesh, DiffOperators, InnerProducts, LomView):
class LogicallyRectMesh(BaseRectangularMesh, DiffOperators, InnerProducts):
"""
LogicallyOrthogonalMesh is a mesh class that deals with logically orthogonal meshes.
LogicallyRectMesh is a mesh class that deals with logically rectangular meshes.
Example of a logically orthogonal mesh:
Example of a logically rectangular mesh:
.. plot::
:include-source:
from SimPEG import Mesh, Utils
X, Y = Utils.exampleLomGird([3,3],'rotate')
M = Mesh.LogicallyOrthogonalMesh([X, Y])
X, Y = Utils.exampleLrmGrid([3,3],'rotate')
M = Mesh.LogicallyRectMesh([X, Y])
M.plotGrid(showIt=True)
"""
__metaclass__ = Utils.SimPEGMetaClass
_meshType = 'LOM'
_meshType = 'LRM'
def __init__(self, nodes):
assert type(nodes) == list, "'nodes' variable must be a list of np.ndarray"
@@ -39,7 +38,7 @@ class LogicallyOrthogonalMesh(BaseRectangularMesh, DiffOperators, InnerProducts,
assert nodes_i.shape == nodes[0].shape, ("nodes[%i] is not the same shape as nodes[0]" % i)
assert len(nodes[0].shape) == len(nodes), "Dimension mismatch"
assert len(nodes[0].shape) > 1, "Not worth using LOM for a 1D mesh."
assert len(nodes[0].shape) > 1, "Not worth using LRM for a 1D mesh."
BaseRectangularMesh.__init__(self, np.array(nodes[0].shape)-1, None)
@@ -329,6 +328,104 @@ class LogicallyOrthogonalMesh(BaseRectangularMesh, DiffOperators, InnerProducts,
_tangents = None
tangents = property(**tangents())
#############################################
# 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.LogicallyRectMesh([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)])
@@ -338,9 +435,9 @@ if __name__ == '__main__':
dee3 = True
if dee3:
X, Y, Z = Utils.ndgrid(h1, h2, h3, vector=False)
M = LogicallyOrthogonalMesh([X, Y, Z])
M = LogicallyRectMesh([X, Y, Z])
else:
X, Y = Utils.ndgrid(h1, h2, vector=False)
M = LogicallyOrthogonalMesh([X, Y])
M = LogicallyRectMesh([X, Y])
print M.r(M.normals, 'F', 'Fx', 'V')
+107
View File
@@ -20,6 +20,7 @@ class BaseTensorMesh(BaseRectangularMesh):
def __init__(self, h_in, x0=None):
assert type(h_in) is list, 'h_in must be a list'
assert len(h_in) in [1,2,3], 'h_in must be of dimension 1, 2, or 3'
h = range(len(h_in))
for i, h_i in enumerate(h_in):
if type(h_i) in [int, long, float, np.int_]:
@@ -445,6 +446,112 @@ class TensorMesh(BaseTensorMesh, TensorView, DiffOperators, InnerProducts):
indzu = (self.gridCC[:,2]==max(self.gridCC[:,2]))
return indxd, indxu, indyd, indyu, indzd, indzu
def _fastFaceInnerProduct(self, materialProperty=None, invertProperty=False):
"""
Fast version of getFaceInnerProduct.
This does not handle the case of a full tensor materialProperty.
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param bool returnP: returns the projection matrices
:param bool invertProperty: inverts the material property
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nF, nF)
"""
return self._fastInnerProduct('F', materialProperty=materialProperty, invertProperty=invertProperty)
def _fastEdgeInnerProduct(self, materialProperty=None, invertProperty=False):
"""
Fast version of getEdgeInnerProduct.
This does not handle the case of a full tensor materialProperty.
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param bool returnP: returns the projection matrices
:param bool invertProperty: inverts the material property
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nE, nE)
"""
return self._fastInnerProduct('E', materialProperty=materialProperty, invertProperty=invertProperty)
def _fastInnerProduct(self, AvType, materialProperty=None, invertProperty=False):
"""
Fast version of getFaceInnerProduct.
This does not handle the case of a full tensor materialProperty.
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:param str AvType: 'E' or 'F'
:param bool returnP: returns the projection matrices
:param bool invertProperty: inverts the material property
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nF, nF)
"""
if materialProperty is None:
materialProperty = np.ones(self.nC)
if invertProperty:
materialProperty = 1./materialProperty
if Utils.isScalar(materialProperty):
materialProperty = materialProperty*np.ones(self.nC)
if materialProperty.size == self.nC:
Av = getattr(self, 'ave'+AvType+'2CC')
Vprop = self.vol * Utils.mkvc(materialProperty)
return self.dim * Utils.sdiag(Av.T * Vprop)
if materialProperty.size == self.nC*self.dim:
Av = getattr(self, 'ave'+AvType+'2CCV')
V = sp.kron(sp.identity(self.dim), Utils.sdiag(self.vol))
return Utils.sdiag(Av.T * V * Utils.mkvc(materialProperty))
def _fastFaceInnerProductDeriv(self, materialProperty=None, v=None):
"""
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nF, nF)
"""
return self._fastInnerProductDeriv('F', materialProperty=materialProperty, v=v)
def _fastEdgeInnerProductDeriv(self, materialProperty=None, v=None):
"""
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nE, nE)
"""
return self._fastInnerProductDeriv('E', materialProperty=materialProperty, v=v)
def _fastInnerProductDeriv(self, AvType, materialProperty=None, v=None):
"""
:param str AvType: 'E' or 'F'
:param numpy.array materialProperty: material property (tensor properties are possible) at each cell center (nC, (1, 3, or 6))
:rtype: scipy.csr_matrix
:return: M, the inner product matrix (nF, nF)
"""
if materialProperty is None:
return None
if Utils.isScalar(materialProperty):
Av = getattr(self, 'ave'+AvType+'2CC')
V = Utils.sdiag(self.vol)
ones = sp.csr_matrix((np.ones(self.nC), (range(self.nC), np.zeros(self.nC))), shape=(self.nC,1))
if v is None:
return self.dim * Av.T * V * ones
return Utils.sdiag(v) * self.dim * Av.T * V * ones
if materialProperty.size == self.nC:
Av = getattr(self, 'ave'+AvType+'2CC')
V = Utils.sdiag(self.vol)
if v is None:
return self.dim * Av.T * V
return Utils.sdiag(v) * self.dim * Av.T * V
if materialProperty.size == self.nC*self.dim: # anisotropic
Av = getattr(self, 'ave'+AvType+'2CCV')
V = sp.kron(sp.identity(self.dim), Utils.sdiag(self.vol))
if v is None:
return Av.T * V
return Utils.sdiag(v) * Av.T * V
if __name__ == '__main__':
print('Welcome to tensor mesh!')
+27 -10
View File
@@ -322,7 +322,7 @@ class TreeFace(object):
if not self.isleaf: return
if self.dim == 2:
line = np.c_[self.node0.x0, self.node1.x0].T
ax.plot(line[:,0], line[:,1],'r-')
ax.plot(line[:,0], line[:,1],'b-')
if text: ax.text(self.center[0], self.center[1],self.num)
elif self.dim == 3:
if text: ax.text(self.center[0], self.center[1], self.center[2], self.num)
@@ -665,10 +665,10 @@ class TreeCell(object):
def plotGrid(self, ax, text=False):
if not self.isleaf: return
if self.dim == 2:
ax.plot(self.center[0],self.center[1],'b.')
ax.plot(self.center[0],self.center[1],'ro')
if text: ax.text(self.center[0],self.center[1],self.num)
elif self.dim == 3:
ax.plot([self.center[0]],[self.center[1]],'b.', zs=[self.center[2]])
ax.plot([self.center[0]],[self.center[1]],'ro', zs=[self.center[2]])
if text: ax.text(self.center[0], self.center[1], self.center[2], self.num)
@@ -1048,21 +1048,38 @@ class TreeMesh(InnerProducts, BaseMesh):
zP = self._getEdgeP(zEdge, xEdge, yEdge)
return sp.vstack((xP, yP, zP))
def plotGrid(self, ax=None, text=True, plotC=True, plotF=True, plotE=False, plotEx=False, plotEy=False, plotEz=False, showIt=False):
def plotGrid(self, ax=None, text=False, centers=False, faces=False, edges=False, lines=True, nodes=False, showIt=False):
self.number()
axOpts = {'projection':'3d'} if self.dim == 3 else {}
if ax is None: ax = plt.subplot(111, **axOpts)
if plotC: [c.plotGrid(ax, text=text) for c in self.cells]
if plotF: [f.plotGrid(ax, text=text) for f in self.faces]
if plotE and self.dim==3: [e.plotGrid(ax, text=text) for e in self.edges]
if plotEx and self.dim==3: [e.plotGrid(ax, text=text) for e in self.edgesX]
if plotEy and self.dim==3: [e.plotGrid(ax, text=text) for e in self.edgesY]
if plotEz and self.dim==3: [e.plotGrid(ax, text=text) for e in self.edgesZ]
if lines:
[f.plotGrid(ax, text=text) for f in self.faces]
if centers:
[c.plotGrid(ax, text=text) for c in self.cells]
if faces:
fX = np.array([f.center for f in self.sortedFaceX])
ax.plot(fX[:,0],fX[:,1],'g>')
fY = np.array([f.center for f in self.sortedFaceY])
ax.plot(fY[:,0],fY[:,1],'g^')
if edges:
eX = np.array([e.center for e in self.sortedFaceY])
ax.plot(eX[:,0],eX[:,1],'c>')
eY = np.array([e.center for e in self.sortedFaceX])
ax.plot(eY[:,0],eY[:,1],'c^')
if nodes:
ns = np.array([n.x0 for n in self.sortedNodes])
ax.plot(ns[:,0],ns[:,1],'bs')
ax.set_xlim((self.x0[0], self.h[0].sum()))
ax.set_ylim((self.x0[1], self.h[1].sum()))
if self.dim == 3:
ax.set_zlim((self.x0[2], self.h[2].sum()))
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=True):
+36 -60
View File
@@ -305,7 +305,7 @@ class TensorView(object):
# Now just deal with 'F' and 'E'
aveOp = 'ave' + vType + ('2CCV' if view == 'vec' else '2CC')
v = getattr(self,aveOp)*v # average to cell centers (might be a vector)
v = self.r(v.reshape((self.nC,3),order='F'),'CC','CC','M')
v = self.r(v.reshape((self.nC,-1),order='F'),'CC','CC','M')
if view == 'vec':
outSlice = []
if 'X' not in normal: outSlice.append(getIndSlice(v[0]))
@@ -369,7 +369,7 @@ class TensorView(object):
if showIt: plt.show()
return out
def plotGrid(self, nodes=False, faces=False, centers=False, edges=False, lines=True, showIt=False):
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.
:param bool nodes: plot nodes
@@ -399,35 +399,26 @@ class TensorView(object):
mesh.plotGrid(nodes=True, faces=True, centers=True, lines=True, showIt=True)
"""
if self.dim == 1:
fig = plt.figure(1)
fig.clf()
ax = plt.subplot(111)
xn = self.gridN
xc = self.gridCC
ax.hold(True)
ax.plot(xn, np.ones(np.shape(xn)), 'bs')
ax.plot(xc, np.ones(np.shape(xc)), 'ro')
ax.plot(xn, np.ones(np.shape(xn)), 'k--')
ax.grid(True)
ax.hold(False)
ax.set_xlabel('x1')
if showIt: plt.show()
elif self.dim == 2:
fig = plt.figure(2)
fig.clf()
ax = plt.subplot(111)
xn = self.gridN
xc = self.gridCC
xs1 = self.gridFx
xs2 = self.gridFy
ax.hold(True)
if nodes: ax.plot(xn[:, 0], xn[:, 1], 'bs')
if centers: ax.plot(xc[:, 0], xc[:, 1], 'ro')
axOpts = {'projection':'3d'} if self.dim == 3 else {}
if ax is None: ax = plt.subplot(111, **axOpts)
if self.dim == 1:
if nodes:
ax.plot(xn, np.ones(self.nN), 'bs')
if centers:
ax.plot(xc, np.ones(self.nC), 'ro')
if lines:
ax.plot(xn, np.ones(self.nN), 'b-')
ax.set_xlabel('x1')
elif self.dim == 2:
if nodes:
ax.plot(self.gridN[:, 0], self.gridN[:, 1], 'bs')
if centers:
ax.plot(self.gridCC[:, 0], self.gridCC[:, 1], 'ro')
if faces:
ax.plot(xs1[:, 0], xs1[:, 1], 'g>')
ax.plot(xs2[:, 0], xs2[:, 1], 'g^')
ax.plot(self.gridFx[:, 0], self.gridFx[:, 1], 'g>')
ax.plot(self.gridFy[:, 0], self.gridFy[:, 1], 'g^')
if edges:
ax.plot(self.gridEx[:, 0], self.gridEx[:, 1], 'c>')
ax.plot(self.gridEy[:, 0], self.gridEy[:, 1], 'c^')
@@ -441,38 +432,23 @@ class TensorView(object):
Y2 = np.c_[mkvc(NN[1][:, 0]), mkvc(NN[1][:, self.nCy]), mkvc(NN[1][:, 0])*np.nan].flatten()
X = np.r_[X1, X2]
Y = np.r_[Y1, Y2]
plt.plot(X, Y)
ax.plot(X, Y, 'b-')
ax.grid(True)
ax.hold(False)
ax.set_xlabel('x1')
ax.set_ylabel('x2')
if showIt: plt.show()
elif self.dim == 3:
fig = plt.figure(3)
fig.clf()
ax = fig.add_subplot(111, projection='3d')
xn = self.gridN
xc = self.gridCC
xfs1 = self.gridFx
xfs2 = self.gridFy
xfs3 = self.gridFz
xes1 = self.gridEx
xes2 = self.gridEy
xes3 = self.gridEz
ax.hold(True)
if nodes: ax.plot(xn[:, 0], xn[:, 1], 'bs', zs=xn[:, 2])
if centers: ax.plot(xc[:, 0], xc[:, 1], 'ro', zs=xc[:, 2])
if nodes:
ax.plot(self.gridN[:, 0], self.gridN[:, 1], 'bs', zs=self.gridN[:, 2])
if centers:
ax.plot(self.gridCC[:, 0], self.gridCC[:, 1], 'ro', zs=self.gridCC[:, 2])
if faces:
ax.plot(xfs1[:, 0], xfs1[:, 1], 'g>', zs=xfs1[:, 2])
ax.plot(xfs2[:, 0], xfs2[:, 1], 'g<', zs=xfs2[:, 2])
ax.plot(xfs3[:, 0], xfs3[:, 1], 'g^', zs=xfs3[:, 2])
ax.plot(self.gridFx[:, 0], self.gridFx[:, 1], 'g>', zs=self.gridFx[:, 2])
ax.plot(self.gridFy[:, 0], self.gridFy[:, 1], 'g<', zs=self.gridFy[:, 2])
ax.plot(self.gridFz[:, 0], self.gridFz[:, 1], 'g^', zs=self.gridFz[:, 2])
if edges:
ax.plot(xes1[:, 0], xes1[:, 1], 'k>', zs=xes1[:, 2])
ax.plot(xes2[:, 0], xes2[:, 1], 'k<', zs=xes2[:, 2])
ax.plot(xes3[:, 0], xes3[:, 1], 'k^', zs=xes3[:, 2])
ax.plot(self.gridEx[:, 0], self.gridEx[:, 1], 'k>', zs=self.gridEx[:, 2])
ax.plot(self.gridEy[:, 0], self.gridEy[:, 1], 'k<', zs=self.gridEy[:, 2])
ax.plot(self.gridEz[:, 0], self.gridEz[:, 1], 'k^', zs=self.gridEz[:, 2])
# Plot the grid lines
if lines:
@@ -489,14 +465,14 @@ class TensorView(object):
X = np.r_[X1, X2, X3]
Y = np.r_[Y1, Y2, Y3]
Z = np.r_[Z1, Z2, Z3]
plt.plot(X, Y, 'b-', zs=Z)
ax.grid(True)
ax.hold(False)
ax.plot(X, Y, 'b-', zs=Z)
ax.set_xlabel('x1')
ax.set_ylabel('x2')
ax.set_zlabel('x3')
if showIt: plt.show()
ax.grid(True)
ax.hold(False)
if showIt: plt.show()
def slicer(mesh, var, imageType='CC', normal='z', index=0, ax=None, clim=None):
assert normal in 'xyz', 'normal must be x, y, or z'
+1 -1
View File
@@ -1,4 +1,4 @@
from TensorMesh import TensorMesh
from CylMesh import CylMesh
from LogicallyOrthogonalMesh import LogicallyOrthogonalMesh
from LogicallyRectMesh import LogicallyRectMesh
from TreeMesh import TreeMesh
+1 -1
View File
@@ -97,7 +97,7 @@ class BaseObjFunction(object):
if return_H:
def H_fun(v):
phi_d2Deriv = self.dataObj2Deriv(m, v, u=u)
phi_m2Deriv = self.reg.modelObj2Deriv()*v
phi_m2Deriv = self.reg.modelObj2Deriv(m, v=v)
return phi_d2Deriv + self.beta * phi_m2Deriv
+10 -4
View File
@@ -648,10 +648,16 @@ class BFGS(Minimize, Remember):
Must be a SimPEG.Solver
"""
_bfgsH0 = getattr(self,'_bfgsH0',None)
if _bfgsH0 is None:
return Solver(sp.identity(self.xc.size).tocsc(), flag='D')
return _bfgsH0
if getattr(self,'_bfgsH0',None) is None:
# Check if it has been set by the user and the default is not being used.
if self.parent is None:
self._bfgsH0 = Solver(sp.identity(self.xc.size).tocsc(), flag='D')
else:
print 'Setting bfgsH0 to the inverse of the modelObj2Deriv. Done using direct methods.'
objFunc = self.parent.objFunc
self._bfgsH0 = Solver(objFunc.reg.modelObj2Deriv(objFunc.m_current))
return self._bfgsH0
@bfgsH0.setter
def bfgsH0(self, value):
assert type(value) is Solver, 'bfgsH0 must be a SimPEG.Solver'
+1 -1
View File
@@ -141,7 +141,7 @@ class BetaEstimate(Parameter):
x0 = np.random.rand(*m.shape)
t = x0.dot(objFunc.dataObj2Deriv(m,x0,u=u))
b = x0.dot(objFunc.reg.modelObj2Deriv()*x0)
b = x0.dot(objFunc.reg.modelObj2Deriv(m, v=x0))
return self.beta0_ratio*(t/b)
+3 -1
View File
@@ -44,7 +44,9 @@ class BaseProblem(object):
def __init__(self, mesh, model, **kwargs):
Utils.setKwargs(self, **kwargs)
self.mesh = mesh
assert isinstance(model, self.modelPair), "Model object must be an instance of a %s class."%(self.modelPair.__name__)
assert (isinstance(model, self.modelPair) or
isinstance(model, Model.ComboModel) and isinstance(model.models[0], self.modelPair)
), "Model object must be an instance of a %s class."%(self.modelPair.__name__)
self.model = model
@property
+14 -3
View File
@@ -79,12 +79,18 @@ class BaseRegularization(object):
R(m) = \mathbf{W^\\top W (m-m_\\text{ref})}
"""
return self.W.T * ( self.W * self.model.transform(m - self.mref) )
mTd = self.model.transformDeriv(m - self.mref)
return mTd.T * ( self.W.T * ( self.W * self.model.transform(m - self.mref) ) )
@Utils.timeIt
def modelObj2Deriv(self):
def modelObj2Deriv(self, m, v=None):
"""
: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::
@@ -98,7 +104,12 @@ class BaseRegularization(object):
R(m) = \mathbf{W^\\top W}
"""
return self.W.T * self.W
mTd = self.model.transformDeriv(m - self.mref)
if v is None:
return mTd.T * self.W.T * self.W * mTd
return mTd.T * ( self.W.T * ( self.W * ( mTd * v) ) )
+1 -1
View File
@@ -61,7 +61,7 @@ class Solver(object):
warnings.warn("You should provide a preconditioner, M.", UserWarning)
return
M = options['M']
if type(M) is sp.linalg.LinearOperator:
if isinstance(M, sp.linalg.LinearOperator):
return
PreconditionerList = ['J','GS']
if type(M) is str:
+29 -20
View File
@@ -3,7 +3,7 @@ import matplotlib.pyplot as plt
from numpy.linalg import norm
from SimPEG.Utils import mkvc, sdiag
from SimPEG import Utils
from SimPEG.Mesh import TensorMesh, LogicallyOrthogonalMesh, CylMesh
from SimPEG.Mesh import TensorMesh, LogicallyRectMesh, CylMesh
import numpy as np
import scipy.sparse as sp
import unittest
@@ -115,7 +115,7 @@ class OrderTest(unittest.TestCase):
max_h = max([np.max(hi) for hi in self.M.h])
return max_h
elif 'LOM' in self._meshType:
elif 'LRM' in self._meshType:
if 'uniform' in self._meshType:
kwrd = 'rect'
elif 'rotate' in self._meshType:
@@ -125,11 +125,11 @@ class OrderTest(unittest.TestCase):
if self.meshDimension == 1:
raise Exception('Lom not supported for 1D')
elif self.meshDimension == 2:
X, Y = Utils.exampleLomGird([nc, nc], kwrd)
self.M = LogicallyOrthogonalMesh([X, Y])
X, Y = Utils.exampleLrmGrid([nc, nc], kwrd)
self.M = LogicallyRectMesh([X, Y])
elif self.meshDimension == 3:
X, Y, Z = Utils.exampleLomGird([nc, nc, nc], kwrd)
self.M = LogicallyOrthogonalMesh([X, Y, Z])
X, Y, Z = Utils.exampleLrmGrid([nc, nc, nc], kwrd)
self.M = LogicallyRectMesh([X, Y, Z])
return 1./nc
def getError(self):
@@ -231,35 +231,44 @@ def checkDerivative(fctn, x0, num=7, plotIt=True, dx=None, expectedOrder=2, tole
"""
print "%s checkDerivative %s" % ('='*20, '='*20)
print "iter\th\t\t|J0-Jt|\t\t|J0+h*dJ'*dx-Jt|\tOrder\n%s" % ('-'*57)
print "iter h |f0-ft| |f0-ft-h*J0*dx| Order\n%s" % ('-'*57)
Jc = fctn(x0)
f0, J0 = fctn(x0)
x0 = mkvc(x0)
if dx is None:
dx = np.random.randn(len(x0))
t = np.logspace(-1, -num, num)
E0 = np.ones(t.shape)
E1 = np.ones(t.shape)
h = np.logspace(-1, -num, num)
E0 = np.ones(h.shape)
E1 = np.ones(h.shape)
def l2norm(x):
# because np.norm breaks if they are scalars?
return np.sqrt(np.real(np.vdot(x, x)))
l2norm = lambda x: np.sqrt(np.inner(x, x)) # because np.norm breaks if they are scalars?
for i in range(num):
Jt = fctn(x0+t[i]*dx)
E0[i] = l2norm(Jt[0]-Jc[0]) # 0th order Taylor
if inspect.isfunction(Jc[1]):
E1[i] = l2norm(Jt[0]-Jc[0]-t[i]*Jc[1](dx)) # 1st order Taylor
# Evaluate at test point
ft, Jt = fctn( x0 + h[i]*dx )
# 0th order Taylor
E0[i] = l2norm( ft - f0 )
# 1st order Taylor
if inspect.isfunction(J0):
E1[i] = l2norm( ft - f0 - h[i]*J0(dx) )
else:
# We assume it is a numpy.ndarray
E1[i] = l2norm(Jt[0]-Jc[0]-t[i]*Jc[1].dot(dx)) # 1st order Taylor
E1[i] = l2norm( ft - f0 - h[i]*J0.dot(dx) )
order0 = np.log10(E0[:-1]/E0[1:])
order1 = np.log10(E1[:-1]/E1[1:])
print "%d\t%1.2e\t%1.3e\t\t%1.3e\t\t%1.3f" % (i, t[i], E0[i], E1[i], np.nan if i == 0 else order1[i-1])
print " %d %1.2e %1.3e %1.3e %1.3f" % (i, h[i], E0[i], E1[i], np.nan if i == 0 else order1[i-1])
# Ensure we are about precision
order0 = order0[E0[1:] > eps]
order1 = order1[E1[1:] > eps]
belowTol = order1.size == 0 and order0.size > 0
# Make sure we get the correct order
correctOrder = order1.size > 0 and np.mean(order1) > tolerance * expectedOrder
passTest = belowTol or correctOrder
@@ -275,8 +284,8 @@ def checkDerivative(fctn, x0, num=7, plotIt=True, dx=None, expectedOrder=2, tole
if plotIt:
plt.figure()
plt.clf()
plt.loglog(t, E0, 'b')
plt.loglog(t, E1, 'g--')
plt.loglog(h, E0, 'b')
plt.loglog(h, E1, 'g--')
plt.title('checkDerivative')
plt.xlabel('h')
plt.ylabel('error of Taylor approximation')
@@ -1,104 +0,0 @@
import numpy as np
import unittest
from SimPEG.Mesh import TensorMesh, LogicallyOrthogonalMesh
from SimPEG.Utils import ndgrid
class BasicLOMTests(unittest.TestCase):
def setUp(self):
a = np.array([1, 1, 1])
b = np.array([1, 2])
c = np.array([1, 4])
gridIt = lambda h: [np.cumsum(np.r_[0, x]) for x in h]
X, Y = ndgrid(gridIt([a, b]), vector=False)
self.TM2 = TensorMesh([a, b])
self.LOM2 = LogicallyOrthogonalMesh([X, Y])
X, Y, Z = ndgrid(gridIt([a, b, c]), vector=False)
self.TM3 = TensorMesh([a, b, c])
self.LOM3 = LogicallyOrthogonalMesh([X, Y, Z])
def test_area_3D(self):
test_area = np.array([1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2])
self.assertTrue(np.all(self.LOM3.area == test_area))
def test_vol_3D(self):
test_vol = np.array([1, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8])
np.testing.assert_almost_equal(self.LOM3.vol, test_vol)
self.assertTrue(True) # Pass if you get past the assertion.
def test_vol_2D(self):
test_vol = np.array([1, 1, 1, 2, 2, 2])
t1 = np.all(self.LOM2.vol == test_vol)
self.assertTrue(t1)
def test_edge_3D(self):
test_edge = np.array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4])
t1 = np.all(self.LOM3.edge == test_edge)
self.assertTrue(t1)
def test_edge_2D(self):
test_edge = np.array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2])
t1 = np.all(self.LOM2.edge == test_edge)
self.assertTrue(t1)
def test_tangents(self):
T = self.LOM2.tangents
self.assertTrue(np.all(self.LOM2.r(T, 'E', 'Ex', 'V')[0] == np.ones(self.LOM2.nEx)))
self.assertTrue(np.all(self.LOM2.r(T, 'E', 'Ex', 'V')[1] == np.zeros(self.LOM2.nEx)))
self.assertTrue(np.all(self.LOM2.r(T, 'E', 'Ey', 'V')[0] == np.zeros(self.LOM2.nEy)))
self.assertTrue(np.all(self.LOM2.r(T, 'E', 'Ey', 'V')[1] == np.ones(self.LOM2.nEy)))
T = self.LOM3.tangents
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ex', 'V')[0] == np.ones(self.LOM3.nEx)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ex', 'V')[1] == np.zeros(self.LOM3.nEx)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ex', 'V')[2] == np.zeros(self.LOM3.nEx)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ey', 'V')[0] == np.zeros(self.LOM3.nEy)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ey', 'V')[1] == np.ones(self.LOM3.nEy)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ey', 'V')[2] == np.zeros(self.LOM3.nEy)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ez', 'V')[0] == np.zeros(self.LOM3.nEz)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ez', 'V')[1] == np.zeros(self.LOM3.nEz)))
self.assertTrue(np.all(self.LOM3.r(T, 'E', 'Ez', 'V')[2] == np.ones(self.LOM3.nEz)))
def test_normals(self):
N = self.LOM2.normals
self.assertTrue(np.all(self.LOM2.r(N, 'F', 'Fx', 'V')[0] == np.ones(self.LOM2.nFx)))
self.assertTrue(np.all(self.LOM2.r(N, 'F', 'Fx', 'V')[1] == np.zeros(self.LOM2.nFx)))
self.assertTrue(np.all(self.LOM2.r(N, 'F', 'Fy', 'V')[0] == np.zeros(self.LOM2.nFy)))
self.assertTrue(np.all(self.LOM2.r(N, 'F', 'Fy', 'V')[1] == np.ones(self.LOM2.nFy)))
N = self.LOM3.normals
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fx', 'V')[0] == np.ones(self.LOM3.nFx)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fx', 'V')[1] == np.zeros(self.LOM3.nFx)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fx', 'V')[2] == np.zeros(self.LOM3.nFx)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fy', 'V')[0] == np.zeros(self.LOM3.nFy)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fy', 'V')[1] == np.ones(self.LOM3.nFy)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fy', 'V')[2] == np.zeros(self.LOM3.nFy)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fz', 'V')[0] == np.zeros(self.LOM3.nFz)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fz', 'V')[1] == np.zeros(self.LOM3.nFz)))
self.assertTrue(np.all(self.LOM3.r(N, 'F', 'Fz', 'V')[2] == np.ones(self.LOM3.nFz)))
def test_grid(self):
self.assertTrue(np.all(self.LOM2.gridCC == self.TM2.gridCC))
self.assertTrue(np.all(self.LOM2.gridN == self.TM2.gridN))
self.assertTrue(np.all(self.LOM2.gridFx == self.TM2.gridFx))
self.assertTrue(np.all(self.LOM2.gridFy == self.TM2.gridFy))
self.assertTrue(np.all(self.LOM2.gridEx == self.TM2.gridEx))
self.assertTrue(np.all(self.LOM2.gridEy == self.TM2.gridEy))
self.assertTrue(np.all(self.LOM3.gridCC == self.TM3.gridCC))
self.assertTrue(np.all(self.LOM3.gridN == self.TM3.gridN))
self.assertTrue(np.all(self.LOM3.gridFx == self.TM3.gridFx))
self.assertTrue(np.all(self.LOM3.gridFy == self.TM3.gridFy))
self.assertTrue(np.all(self.LOM3.gridFz == self.TM3.gridFz))
self.assertTrue(np.all(self.LOM3.gridEx == self.TM3.gridEx))
self.assertTrue(np.all(self.LOM3.gridEy == self.TM3.gridEy))
self.assertTrue(np.all(self.LOM3.gridEz == self.TM3.gridEz))
if __name__ == '__main__':
unittest.main()
+104
View File
@@ -0,0 +1,104 @@
import numpy as np
import unittest
from SimPEG.Mesh import TensorMesh, LogicallyRectMesh
from SimPEG.Utils import ndgrid
class BasicLRMTests(unittest.TestCase):
def setUp(self):
a = np.array([1, 1, 1])
b = np.array([1, 2])
c = np.array([1, 4])
gridIt = lambda h: [np.cumsum(np.r_[0, x]) for x in h]
X, Y = ndgrid(gridIt([a, b]), vector=False)
self.TM2 = TensorMesh([a, b])
self.LRM2 = LogicallyRectMesh([X, Y])
X, Y, Z = ndgrid(gridIt([a, b, c]), vector=False)
self.TM3 = TensorMesh([a, b, c])
self.LRM3 = LogicallyRectMesh([X, Y, Z])
def test_area_3D(self):
test_area = np.array([1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2])
self.assertTrue(np.all(self.LRM3.area == test_area))
def test_vol_3D(self):
test_vol = np.array([1, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8])
np.testing.assert_almost_equal(self.LRM3.vol, test_vol)
self.assertTrue(True) # Pass if you get past the assertion.
def test_vol_2D(self):
test_vol = np.array([1, 1, 1, 2, 2, 2])
t1 = np.all(self.LRM2.vol == test_vol)
self.assertTrue(t1)
def test_edge_3D(self):
test_edge = np.array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4])
t1 = np.all(self.LRM3.edge == test_edge)
self.assertTrue(t1)
def test_edge_2D(self):
test_edge = np.array([1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2])
t1 = np.all(self.LRM2.edge == test_edge)
self.assertTrue(t1)
def test_tangents(self):
T = self.LRM2.tangents
self.assertTrue(np.all(self.LRM2.r(T, 'E', 'Ex', 'V')[0] == np.ones(self.LRM2.nEx)))
self.assertTrue(np.all(self.LRM2.r(T, 'E', 'Ex', 'V')[1] == np.zeros(self.LRM2.nEx)))
self.assertTrue(np.all(self.LRM2.r(T, 'E', 'Ey', 'V')[0] == np.zeros(self.LRM2.nEy)))
self.assertTrue(np.all(self.LRM2.r(T, 'E', 'Ey', 'V')[1] == np.ones(self.LRM2.nEy)))
T = self.LRM3.tangents
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ex', 'V')[0] == np.ones(self.LRM3.nEx)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ex', 'V')[1] == np.zeros(self.LRM3.nEx)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ex', 'V')[2] == np.zeros(self.LRM3.nEx)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ey', 'V')[0] == np.zeros(self.LRM3.nEy)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ey', 'V')[1] == np.ones(self.LRM3.nEy)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ey', 'V')[2] == np.zeros(self.LRM3.nEy)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ez', 'V')[0] == np.zeros(self.LRM3.nEz)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ez', 'V')[1] == np.zeros(self.LRM3.nEz)))
self.assertTrue(np.all(self.LRM3.r(T, 'E', 'Ez', 'V')[2] == np.ones(self.LRM3.nEz)))
def test_normals(self):
N = self.LRM2.normals
self.assertTrue(np.all(self.LRM2.r(N, 'F', 'Fx', 'V')[0] == np.ones(self.LRM2.nFx)))
self.assertTrue(np.all(self.LRM2.r(N, 'F', 'Fx', 'V')[1] == np.zeros(self.LRM2.nFx)))
self.assertTrue(np.all(self.LRM2.r(N, 'F', 'Fy', 'V')[0] == np.zeros(self.LRM2.nFy)))
self.assertTrue(np.all(self.LRM2.r(N, 'F', 'Fy', 'V')[1] == np.ones(self.LRM2.nFy)))
N = self.LRM3.normals
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fx', 'V')[0] == np.ones(self.LRM3.nFx)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fx', 'V')[1] == np.zeros(self.LRM3.nFx)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fx', 'V')[2] == np.zeros(self.LRM3.nFx)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fy', 'V')[0] == np.zeros(self.LRM3.nFy)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fy', 'V')[1] == np.ones(self.LRM3.nFy)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fy', 'V')[2] == np.zeros(self.LRM3.nFy)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fz', 'V')[0] == np.zeros(self.LRM3.nFz)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fz', 'V')[1] == np.zeros(self.LRM3.nFz)))
self.assertTrue(np.all(self.LRM3.r(N, 'F', 'Fz', 'V')[2] == np.ones(self.LRM3.nFz)))
def test_grid(self):
self.assertTrue(np.all(self.LRM2.gridCC == self.TM2.gridCC))
self.assertTrue(np.all(self.LRM2.gridN == self.TM2.gridN))
self.assertTrue(np.all(self.LRM2.gridFx == self.TM2.gridFx))
self.assertTrue(np.all(self.LRM2.gridFy == self.TM2.gridFy))
self.assertTrue(np.all(self.LRM2.gridEx == self.TM2.gridEx))
self.assertTrue(np.all(self.LRM2.gridEy == self.TM2.gridEy))
self.assertTrue(np.all(self.LRM3.gridCC == self.TM3.gridCC))
self.assertTrue(np.all(self.LRM3.gridN == self.TM3.gridN))
self.assertTrue(np.all(self.LRM3.gridFx == self.TM3.gridFx))
self.assertTrue(np.all(self.LRM3.gridFy == self.TM3.gridFy))
self.assertTrue(np.all(self.LRM3.gridFz == self.TM3.gridFz))
self.assertTrue(np.all(self.LRM3.gridEx == self.TM3.gridEx))
self.assertTrue(np.all(self.LRM3.gridEy == self.TM3.gridEy))
self.assertTrue(np.all(self.LRM3.gridEz == self.TM3.gridEz))
if __name__ == '__main__':
unittest.main()
+6 -4
View File
@@ -4,6 +4,8 @@ import numpy as np
import unittest
import matplotlib.pyplot as plt
TOL = 1e-10
class TestOcTreeObjects(unittest.TestCase):
def setUp(self):
@@ -493,10 +495,10 @@ class SimpleOctreeOperatorTests(unittest.TestCase):
# self.assertTrue((self.tM2.edgeCurl - self.oM2.edgeCurl).toarray().sum() == 0)
def test_InnerProducts(self):
self.assertTrue((self.tM.getFaceInnerProduct() - self.oM.getFaceInnerProduct()).toarray().sum() == 0)
self.assertTrue((self.tM2.getFaceInnerProduct() - self.oM2.getFaceInnerProduct()).toarray().sum() == 0)
self.assertTrue((self.tM2.getEdgeInnerProduct() - self.oM2.getEdgeInnerProduct()).toarray().sum() == 0)
self.assertTrue((self.tM.getEdgeInnerProduct() - self.oM.getEdgeInnerProduct()).toarray().sum() == 0)
self.assertTrue((self.tM.getFaceInnerProduct() - self.oM.getFaceInnerProduct()).toarray().sum() < TOL)
self.assertTrue((self.tM2.getFaceInnerProduct() - self.oM2.getFaceInnerProduct()).toarray().sum() < TOL)
self.assertTrue((self.tM2.getEdgeInnerProduct() - self.oM2.getEdgeInnerProduct()).toarray().sum() < TOL)
self.assertTrue((self.tM.getEdgeInnerProduct() - self.oM.getEdgeInnerProduct()).toarray().sum() < TOL)
if __name__ == '__main__':
+4 -4
View File
@@ -6,7 +6,7 @@ from TestUtils import OrderTest
class TestInnerProducts(OrderTest):
"""Integrate an function over a unit cube domain using edgeInnerProducts and faceInnerProducts."""
meshTypes = ['uniformTensorMesh', 'uniformLOM', 'rotateLOM']
meshTypes = ['uniformTensorMesh', 'uniformLRM', 'rotateLRM']
meshDimension = 3
meshSizes = [16, 32]
@@ -30,7 +30,7 @@ class TestInnerProducts(OrderTest):
sigma = np.c_[call(sigma1, Gc)]
analytic = 647./360 # Found using sympy.
elif self.sigmaTest == 3:
sigma = np.c_[call(sigma1, Gc), call(sigma2, Gc), call(sigma3, Gc)]
sigma = np.r_[call(sigma1, Gc), call(sigma2, Gc), call(sigma3, Gc)]
analytic = 37./12 # Found using sympy.
elif self.sigmaTest == 6:
sigma = np.c_[call(sigma1, Gc), call(sigma2, Gc), call(sigma3, Gc),
@@ -97,7 +97,7 @@ class TestInnerProducts(OrderTest):
class TestInnerProducts2D(OrderTest):
"""Integrate an function over a unit cube domain using edgeInnerProducts and faceInnerProducts."""
meshTypes = ['uniformTensorMesh', 'uniformLOM', 'rotateLOM']
meshTypes = ['uniformTensorMesh', 'uniformLRM', 'rotateLRM']
meshDimension = 2
meshSizes = [4, 8, 16, 32, 64, 128]
@@ -122,7 +122,7 @@ class TestInnerProducts2D(OrderTest):
sigma = np.c_[call(sigma1, Gc), call(sigma2, Gc)]
analytic = 189959./120 # Found using sympy. z=5
elif self.sigmaTest == 3:
sigma = np.c_[call(sigma1, Gc), call(sigma2, Gc), call(sigma3, Gc)]
sigma = np.r_[call(sigma1, Gc), call(sigma2, Gc), call(sigma3, Gc)]
analytic = 781427./360 # Found using sympy. z=5
if self.location == 'edges':
+108
View File
@@ -0,0 +1,108 @@
import numpy as np
import unittest
from SimPEG import *
from TestUtils import checkDerivative
class TestInnerProductsDerivs(unittest.TestCase):
def doTestFace(self, h, rep, vec, fast):
mesh = Mesh.TensorMesh(h)
v = np.random.rand(mesh.nF)
def fun(sig):
M = mesh.getFaceInnerProduct(sig)
if vec:
Md = mesh.getFaceInnerProductDeriv(sig, v=v, doFast=fast)
return M*v, Md
Md = mesh.getFaceInnerProductDeriv(sig, doFast=fast)
return M*v, Utils.sdiag(v)*Md
sig = np.random.rand(1) if rep is 0 else np.random.rand(mesh.nC*rep)
return checkDerivative(fun, sig, num=5, plotIt=False)
def doTestEdge(self, h, rep, vec, fast):
mesh = Mesh.TensorMesh(h)
v = np.random.rand(mesh.nE)
def fun(sig):
M = mesh.getEdgeInnerProduct(sig)
if vec:
Md = mesh.getEdgeInnerProductDeriv(sig, v=v, doFast=fast)
return M*v, Md
Md = mesh.getEdgeInnerProductDeriv(sig, doFast=fast)
return M*v, Utils.sdiag(v)*Md
sig = np.random.rand(1) if rep is 0 else np.random.rand(mesh.nC*rep)
return checkDerivative(fun, sig, num=5, plotIt=False)
def test_FaceIP_1D_float(self):
self.assertTrue(self.doTestFace([10],0,True, False))
def test_FaceIP_2D_float(self):
self.assertTrue(self.doTestFace([10, 4],0,True, False))
def test_FaceIP_3D_float(self):
self.assertTrue(self.doTestFace([10, 4, 5],0,True, False))
def test_FaceIP_1D_isotropic(self):
self.assertTrue(self.doTestFace([10],1,True, False))
def test_FaceIP_2D_isotropic(self):
self.assertTrue(self.doTestFace([10, 4],1,True, False))
def test_FaceIP_3D_isotropic(self):
self.assertTrue(self.doTestFace([10, 4, 5],1,True, False))
def test_FaceIP_2D_anisotropic(self):
self.assertTrue(self.doTestFace([10, 4],2,True, False))
def test_FaceIP_3D_anisotropic(self):
self.assertTrue(self.doTestFace([10, 4, 5],3,True, False))
def test_FaceIP_2D_tensor(self):
self.assertTrue(self.doTestFace([10, 4],3,True, False))
def test_FaceIP_3D_tensor(self):
self.assertTrue(self.doTestFace([10, 4, 5],6,True, False))
def test_FaceIP_1D_float_fast(self):
self.assertTrue(self.doTestFace([10],0, False, True))
def test_FaceIP_2D_float_fast(self):
self.assertTrue(self.doTestFace([10, 4],0, False, True))
def test_FaceIP_3D_float_fast(self):
self.assertTrue(self.doTestFace([10, 4, 5],0, False, True))
def test_FaceIP_1D_isotropic_fast(self):
self.assertTrue(self.doTestFace([10],1, False, True))
def test_FaceIP_2D_isotropic_fast(self):
self.assertTrue(self.doTestFace([10, 4],1, False, True))
def test_FaceIP_3D_isotropic_fast(self):
self.assertTrue(self.doTestFace([10, 4, 5],1, False, True))
def test_FaceIP_2D_anisotropic_fast(self):
self.assertTrue(self.doTestFace([10, 4],2, False, True))
def test_FaceIP_3D_anisotropic_fast(self):
self.assertTrue(self.doTestFace([10, 4, 5],3, False, True))
def test_EdgeIP_2D_float(self):
self.assertTrue(self.doTestEdge([10, 4],0,True, False))
def test_EdgeIP_3D_float(self):
self.assertTrue(self.doTestEdge([10, 4, 5],0,True, False))
def test_EdgeIP_2D_isotropic(self):
self.assertTrue(self.doTestEdge([10, 4],1,True, False))
def test_EdgeIP_3D_isotropic(self):
self.assertTrue(self.doTestEdge([10, 4, 5],1,True, False))
def test_EdgeIP_2D_anisotropic(self):
self.assertTrue(self.doTestEdge([10, 4],2,True, False))
def test_EdgeIP_3D_anisotropic(self):
self.assertTrue(self.doTestEdge([10, 4, 5],3,True, False))
def test_EdgeIP_2D_tensor(self):
self.assertTrue(self.doTestEdge([10, 4],3,True, False))
def test_EdgeIP_3D_tensor(self):
self.assertTrue(self.doTestEdge([10, 4, 5],6,True, False))
def test_EdgeIP_2D_float_fast(self):
self.assertTrue(self.doTestEdge([10, 4],0, False, True))
def test_EdgeIP_3D_float_fast(self):
self.assertTrue(self.doTestEdge([10, 4, 5],0, False, True))
def test_EdgeIP_2D_isotropic_fast(self):
self.assertTrue(self.doTestEdge([10, 4],1, False, True))
def test_EdgeIP_3D_isotropic_fast(self):
self.assertTrue(self.doTestEdge([10, 4, 5],1, False, True))
def test_EdgeIP_2D_anisotropic_fast(self):
self.assertTrue(self.doTestEdge([10, 4],2, False, True))
def test_EdgeIP_3D_anisotropic_fast(self):
self.assertTrue(self.doTestEdge([10, 4, 5],3, False, True))
if __name__ == '__main__':
unittest.main()
+3 -3
View File
@@ -4,7 +4,7 @@ from TestUtils import OrderTest
import matplotlib.pyplot as plt
#TODO: 'randomTensorMesh'
MESHTYPES = ['uniformTensorMesh', 'uniformLOM', 'rotateLOM']
MESHTYPES = ['uniformTensorMesh', 'uniformLRM', 'rotateLRM']
call2 = lambda fun, xyz: fun(xyz[:, 0], xyz[:, 1])
call3 = lambda fun, xyz: fun(xyz[:, 0], xyz[:, 1], xyz[:, 2])
cart_row2 = lambda g, xfun, yfun: np.c_[call2(xfun, g), call2(yfun, g)]
@@ -38,7 +38,7 @@ class TestCurl(OrderTest):
curlE_anal = self.M.projectFaceVector(Fc)
curlE = self.M.edgeCurl.dot(E)
if self._meshType == 'rotateLOM':
if self._meshType == 'rotateLRM':
# Really it is the integration we should be caring about:
# So, let us look at the l2 norm.
err = np.linalg.norm(self.M.area*(curlE - curlE_anal), 2)
@@ -208,7 +208,7 @@ class TestFaceDiv3D(OrderTest):
divF = self.M.faceDiv.dot(F)
divF_anal = call3(sol, self.M.gridCC)
if self._meshType == 'rotateLOM':
if self._meshType == 'rotateLRM':
# Really it is the integration we should be caring about:
# So, let us look at the l2 norm.
err = np.linalg.norm(self.M.vol*(divF-divF_anal), 2)
+7
View File
@@ -71,6 +71,7 @@ class TestSequenceFunctions(unittest.TestCase):
self.assertTrue(np.all(sub2ind(x.shape, [4,0]) == [4]))
self.assertTrue(np.all(sub2ind(x.shape, [0,1]) == [5]))
self.assertTrue(np.all(sub2ind(x.shape, [4,1]) == [9]))
self.assertTrue(np.all(sub2ind(x.shape, [[4,1]]) == [9]))
self.assertTrue(np.all(sub2ind(x.shape, [[0,0],[4,0],[0,1],[4,1]]) == [0,4,5,9]))
def test_ind2sub(self):
@@ -163,6 +164,12 @@ class TestSequenceFunctions(unittest.TestCase):
Z = B2*A - sp.identity(M.nC*3)
self.assertTrue(np.linalg.norm(Z.todense().ravel(), 2) < TOL)
def test_isFloat(self):
self.assertTrue(isScalar(1.))
self.assertTrue(isScalar(1))
self.assertTrue(isScalar(long(1)))
self.assertTrue(isScalar(np.r_[1.]))
self.assertTrue(isScalar(np.r_[1]))
if __name__ == '__main__':
unittest.main()
+2 -2
View File
@@ -1,6 +1,6 @@
from matutils import *
from meshutils import exampleLomGird, meshTensors
from lomutils import volTetra, faceInfo, indexCube
from meshutils import exampleLrmGrid, meshTensors
from lrmutils import volTetra, faceInfo, indexCube
from interputils import interpmat
from ipythonutils import easyAnimate as animate
import ModelBuilder
+31 -13
View File
@@ -1,6 +1,15 @@
import numpy as np
import scipy.sparse as sp
def isScalar(f):
scalarTypes = [float, int, long, np.float_, np.int_]
if type(f) in scalarTypes:
return True
elif type(f) == np.ndarray and f.size == 1 and type(f[0]) in scalarTypes:
return True
return False
def mkvc(x, numDims=1):
"""Creates a vector with the number of dimension specified
@@ -146,7 +155,7 @@ def sub2ind(shape, subs):
"""From the given shape, returns the index of the given subscript"""
if type(subs) is not np.ndarray:
subs = np.array(subs)
if subs.size == len(shape):
if len(subs.shape) == 1:
subs = subs[np.newaxis,:]
assert subs.shape[1] == len(shape), 'Indexing must be done as a column vectors. e.g. [[3,6],[6,2],...]'
inds = np.ravel_multi_index(subs.T, shape, order='F')
@@ -248,7 +257,7 @@ def makePropertyTensor(M, sigma):
if sigma is None: # default is ones
sigma = np.ones(M.nC)
if type(sigma) in [float, int, long]:
if isScalar(sigma):
sigma = sigma * np.ones(M.nC)
if M.dim == 1:
@@ -261,9 +270,11 @@ def makePropertyTensor(M, sigma):
if sigma.size == M.nC: # Isotropic!
sigma = mkvc(sigma) # ensure it is a vector.
Sigma = sdiag(np.r_[sigma, sigma])
elif sigma.shape[1] == 2: # Diagonal tensor
elif sigma.size == M.nC*2: # Diagonal tensor
sigma = sigma.reshape((M.nC,2), order='F')
Sigma = sdiag(np.r_[sigma[:, 0], sigma[:, 1]])
elif sigma.shape[1] == 3: # Fully anisotropic
elif sigma.size == M.nC*3: # Fully anisotropic
sigma = sigma.reshape((M.nC,3), order='F')
row1 = sp.hstack((sdiag(sigma[:, 0]), sdiag(sigma[:, 2])))
row2 = sp.hstack((sdiag(sigma[:, 2]), sdiag(sigma[:, 1])))
Sigma = sp.vstack((row1, row2))
@@ -273,15 +284,18 @@ def makePropertyTensor(M, sigma):
if sigma.size == M.nC: # Isotropic!
sigma = mkvc(sigma) # ensure it is a vector.
Sigma = sdiag(np.r_[sigma, sigma, sigma])
elif sigma.shape[1] == 3: # Diagonal tensor
elif sigma.size == M.nC*3: # Diagonal tensor
sigma = sigma.reshape((M.nC,3), order='F')
Sigma = sdiag(np.r_[sigma[:, 0], sigma[:, 1], sigma[:, 2]])
elif sigma.shape[1] == 6: # Fully anisotropic
elif sigma.size == M.nC*6: # Fully anisotropic
sigma = sigma.reshape((M.nC,6), order='F')
row1 = sp.hstack((sdiag(sigma[:, 0]), sdiag(sigma[:, 3]), sdiag(sigma[:, 4])))
row2 = sp.hstack((sdiag(sigma[:, 3]), sdiag(sigma[:, 1]), sdiag(sigma[:, 5])))
row3 = sp.hstack((sdiag(sigma[:, 4]), sdiag(sigma[:, 5]), sdiag(sigma[:, 2])))
Sigma = sp.vstack((row1, row2, row3))
else:
raise Exception('Unexpected shape of sigma')
return Sigma
@@ -289,34 +303,38 @@ def invPropertyTensor(M, tensor, returnMatrix=False):
T = None
if type(tensor) in [float, int, long]:
if isScalar(tensor):
T = 1./tensor
elif tensor.size == M.nC: # Isotropic!
T = 1./mkvc(tensor) # ensure it is a vector.
elif M.dim == 2:
if tensor.shape[1] == 2: # Diagonal tensor
if tensor.size == M.nC*2: # Diagonal tensor
T = 1./tensor
elif tensor.shape[1] == 3: # Fully anisotropic
elif tensor.size == M.nC*3: # Fully anisotropic
tensor = tensor.reshape((M.nC,3), order='F')
B = inv2X2BlockDiagonal(tensor[:,0], tensor[:,2],
tensor[:,2], tensor[:,1],
returnMatrix=False)
b11, b12, b21, b22 = B
T = np.c_[b11, b22, b12]
T = np.r_[b11, b22, b12]
elif M.dim == 3:
if tensor.shape[1] == 3: # Diagonal tensor
if tensor.size == M.nC*3: # Diagonal tensor
T = 1./tensor
elif tensor.shape[1] == 6: # Fully anisotropic
elif tensor.size == M.nC*6: # Fully anisotropic
tensor = tensor.reshape((M.nC,6), order='F')
B = inv3X3BlockDiagonal(tensor[:,0], tensor[:,3], tensor[:,4],
tensor[:,3], tensor[:,1], tensor[:,5],
tensor[:,4], tensor[:,5], tensor[:,2],
returnMatrix=False)
b11, b12, b13, b21, b22, b23, b31, b32, b33 = B
T = np.c_[b11, b22, b33, b12, b13, b23]
T = np.r_[b11, b22, b33, b12, b13, b23]
if T is None:
raise Exception('Unexpected shape of tensor')
if returnMatrix:
return makePropertyTensor(M, T)
return T
+4 -4
View File
@@ -2,7 +2,7 @@ import numpy as np
from scipy import sparse as sp
from matutils import mkvc, ndgrid, sub2ind, sdiag
def exampleLomGird(nC, exType):
def exampleLrmGrid(nC, exType):
assert type(nC) == list, "nC must be a list containing the number of nodes"
assert len(nC) == 2 or len(nC) == 3, "nC must either two or three dimensions"
exType = exType.lower()
@@ -11,18 +11,18 @@ def exampleLomGird(nC, exType):
assert exType in possibleTypes, "Not a possible example type."
if exType == 'rect':
return ndgrid([np.cumsum(np.r_[0, np.ones(nx)/nx]) for nx in nC], vector=False)
return list(ndgrid([np.cumsum(np.r_[0, np.ones(nx)/nx]) for nx in nC], vector=False))
elif exType == 'rotate':
if len(nC) == 2:
X, Y = ndgrid([np.cumsum(np.r_[0, np.ones(nx)/nx]) for nx in nC], vector=False)
amt = 0.5-np.sqrt((X - 0.5)**2 + (Y - 0.5)**2)
amt[amt < 0] = 0
return X + (-(Y - 0.5))*amt, Y + (+(X - 0.5))*amt
return [X + (-(Y - 0.5))*amt, Y + (+(X - 0.5))*amt]
elif len(nC) == 3:
X, Y, Z = ndgrid([np.cumsum(np.r_[0, np.ones(nx)/nx]) for nx in nC], vector=False)
amt = 0.5-np.sqrt((X - 0.5)**2 + (Y - 0.5)**2 + (Z - 0.5)**2)
amt[amt < 0] = 0
return X + (-(Y - 0.5))*amt, Y + (-(Z - 0.5))*amt, Z + (-(X - 0.5))*amt
return [X + (-(Y - 0.5))*amt, Y + (-(Z - 0.5))*amt, Z + (-(X - 0.5))*amt]
def meshTensors(*args):