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Base.py
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Base.py
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from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import properties
from scipy.constants import mu_0
import numpy as np
from SimPEG import Survey
from SimPEG import Problem
from SimPEG import Utils
from SimPEG import Maps
from SimPEG import Props
from SimPEG import Solver as SimpegSolver
__all__ = ['BaseEMProblem', 'BaseEMSurvey', 'BaseEMSrc']
###############################################################################
# #
# Base EM Problem #
# #
###############################################################################
class BaseEMProblem(Problem.BaseProblem):
sigma, sigmaMap, sigmaDeriv = Props.Invertible(
"Electrical conductivity (S/m)"
)
rho, rhoMap, rhoDeriv = Props.Invertible(
"Electrical resistivity (Ohm m)"
)
Props.Reciprocal(sigma, rho)
mu = Props.PhysicalProperty(
"Magnetic Permeability (H/m)",
default=mu_0
)
mui = Props.PhysicalProperty(
"Inverse Magnetic Permeability (m/H)"
)
Props.Reciprocal(mu, mui)
surveyPair = Survey.BaseSurvey #: The survey to pair with.
dataPair = Survey.Data #: The data to pair with.
mapPair = Maps.IdentityMap #: Type of mapping to pair with
Solver = SimpegSolver #: Type of solver to pair with
solverOpts = {} #: Solver options
verbose = False
storeInnerProduct = True
####################################################
# Make A Symmetric
####################################################
@property
def _makeASymmetric(self):
if getattr(self, '__makeASymmetric', None) is None:
self.__makeASymmetric = True
return self.__makeASymmetric
####################################################
# Mass Matrices
####################################################
@property
def _clear_on_mu_update(self):
"""
These matrices are deleted if there is an update to the permeability
model
"""
return [
'_MeMu', '_MeMuI', '_MfMui', '_MfMuiI',
'_MfMuiDeriv', '_MeMuDeriv'
]
@property
def _clear_on_sigma_update(self):
"""
These matrices are deleted if there is an update to the conductivity
model
"""
return [
'_MeSigma', '_MeSigmaI', '_MfRho', '_MfRhoI',
'_MeSigmaDeriv', '_MfRhoDeriv'
]
@property
def deleteTheseOnModelUpdate(self):
"""
matrices to be deleted if the model maps for conductivity and/or
permeability are updated
"""
toDelete = []
if self.sigmaMap is not None or self.rhoMap is not None:
toDelete += self._clear_on_sigma_update
if hasattr(self, 'muMap') or hasattr(self, 'muiMap'):
if self.muMap is not None or self.muiMap is not None:
toDelete += self._clear_on_mu_update
return toDelete
@properties.observer('mu')
def _clear_mu_mats_on_mu_update(self, change):
if change['previous'] is change['value']:
return
if (
isinstance(change['previous'], np.ndarray) and
isinstance(change['value'], np.ndarray) and
np.allclose(change['previous'], change['value'])
):
return
for mat in self._clear_on_mu_update:
if hasattr(self, mat):
delattr(self, mat)
@properties.observer('mui')
def _clear_mu_mats_on_mui_update(self, change):
if change['previous'] is change['value']:
return
if (
isinstance(change['previous'], np.ndarray) and
isinstance(change['value'], np.ndarray) and
np.allclose(change['previous'], change['value'])
):
return
for mat in self._clear_on_mu_update:
if hasattr(self, mat):
delattr(self, mat)
@properties.observer('sigma')
def _clear_sigma_mats_on_sigma_update(self, change):
if change['previous'] is change['value']:
return
if (
isinstance(change['previous'], np.ndarray) and
isinstance(change['value'], np.ndarray) and
np.allclose(change['previous'], change['value'])
):
return
for mat in self._clear_on_sigma_update:
if hasattr(self, mat):
delattr(self, mat)
@properties.observer('rho')
def _clear_sigma_mats_on_rho_update(self, change):
if change['previous'] is change['value']:
return
if (
isinstance(change['previous'], np.ndarray) and
isinstance(change['value'], np.ndarray) and
np.allclose(change['previous'], change['value'])
):
return
for mat in self._clear_on_sigma_update:
if hasattr(self, mat):
delattr(self, mat)
@property
def Me(self):
"""
Edge inner product matrix
"""
if getattr(self, '_Me', None) is None:
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):
"""
Face inner product matrix
"""
if getattr(self, '_Mf', None) is None:
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
def MfMui(self):
"""
Face inner product matrix for \\(\\mu^{-1}\\).
Used in the E-B formulation
"""
if getattr(self, '_MfMui', None) is None:
self._MfMui = self.mesh.getFaceInnerProduct(self.mui)
return self._MfMui
def MfMuiDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MfMui` with respect to the model.
"""
if self.muiMap is None:
return Utils.Zero()
if getattr(self, '_MfMuiDeriv', None) is None:
self._MfMuiDeriv = self.mesh.getFaceInnerProductDeriv(
np.ones(self.mesh.nC)
)(np.ones(self.mesh.nF)) * self.muiDeriv
if v is not None:
if adjoint is True:
return self._MfMuiDeriv.T*(Utils.sdiag(u)*v)
return Utils.sdiag(u)*(self._MfMuiDeriv*v)
else:
if adjoint is True:
return self._MfMuiDeriv.T*(Utils.sdiag(u))
return Utils.sdiag(u)*(self._MfMuiDeriv)
@property
def MfMuiI(self):
"""
Inverse of :code:`MfMui`.
"""
if getattr(self, '_MfMuiI', None) is None:
self._MfMuiI = self.mesh.getFaceInnerProduct(self.mui, invMat=True)
return self._MfMuiI
def MfMuiIDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MfMui` with respect to the model
"""
if self.muiMap is None:
return Utils.Zero()
if len(self.mui.shape) > 1:
if self.mui.shape[1] > self.mesh.dim:
raise NotImplementedError(
"Full anisotropy is not implemented for MfMuiIDeriv."
)
dMfMuiI_dI = -self.MfMuiI**2
if adjoint is True:
return self.MfMuiDeriv(
u, v=dMfMuiI_dI.T * v if v is not None else dMfMuiI_dI.T,
adjoint=adjoint
)
return dMfMuiI_dI * self.MfMuiDeriv(u, v=v)
@property
def MeMu(self):
"""
Edge inner product matrix for \\(\\mu\\).
Used in the H-J formulation
"""
if getattr(self, '_MeMu', None) is None:
self._MeMu = self.mesh.getEdgeInnerProduct(self.mu)
return self._MeMu
def MeMuDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MeMu` with respect to the model.
"""
if self.muMap is None:
return Utils.Zero()
if getattr(self, '_MeMuDeriv', None) is None:
self._MeMuDeriv = self.mesh.getEdgeInnerProductDeriv(
np.ones(self.mesh.nC)
)(np.ones(self.mesh.nE)) * self.muDeriv
if v is not None:
if adjoint:
return self._MeMuDeriv.T * (Utils.sdiag(u)*v)
return Utils.sdiag(u)*(self._MeMuDeriv * v)
else:
if adjoint is True:
return self._MeMuDeriv.T * Utils.sdiag(u)
return Utils.sdiag(u) * self._MeMuDeriv
@property
def MeMuI(self):
"""
Inverse of :code:`MeMu`
"""
if getattr(self, '_MeMuI', None) is None:
self._MeMuI = self.mesh.getEdgeInnerProduct(self.mu, invMat=True)
return self._MeMuI
def MeMuIDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MeMuI` with respect to the model
"""
if self.muMap is None:
return Utils.Zero()
if len(self.mu.shape) > 1:
if self.mu.shape[1] > self.mesh.dim:
raise NotImplementedError(
"Full anisotropy is not implemented for MeMuIDeriv."
)
dMeMuI_dI = -self.MeMuI**2
if adjoint is True:
return self.MeMuDeriv(
u, v=dMeMuI_dI.T * v if v is not None else dMeMuI_dI.T,
adjoint=adjoint
)
return dMeMuI_dI * self.MeMuDeriv(u, v=v)
####################################################
# Electrical Conductivity
####################################################
@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
def MeSigmaDeriv(self, u, v=None, adjoint=False):
"""
Derivative of MeSigma with respect to the model times a vector (u)
"""
if self.sigmaMap is None:
return Utils.Zero()
if getattr(self, '_MeSigmaDeriv', None) is None:
self._MeSigmaDeriv = self.mesh.getEdgeInnerProductDeriv(
np.ones(self.mesh.nC)
)(np.ones(self.mesh.nE)) * self.sigmaDeriv
if v is not None:
if adjoint:
return self._MeSigmaDeriv.T * (Utils.sdiag(u)*v)
return Utils.sdiag(u)*(self._MeSigmaDeriv * v)
else:
if adjoint is True:
return self._MeSigmaDeriv.T * Utils.sdiag(u)
return Utils.sdiag(u) * self._MeSigmaDeriv
@property
def MeSigmaI(self):
"""
Inverse of the edge inner product matrix for \\(\\sigma\\).
"""
if getattr(self, '_MeSigmaI', None) is None:
self._MeSigmaI = self.mesh.getEdgeInnerProduct(
self.sigma, invMat=True
)
return self._MeSigmaI
def MeSigmaIDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MeSigmaI` with respect to the model
"""
if self.sigmaMap is None:
return Utils.Zero()
if len(self.sigma.shape) > 1:
if self.sigma.shape[1] > self.mesh.dim:
raise NotImplementedError(
"Full anisotropy is not implemented for MeSigmaIDeriv."
)
dMeSigmaI_dI = -self.MeSigmaI**2
if adjoint is True:
return self.MeSigmaDeriv(
u, v=(dMeSigmaI_dI.T*v) if v is not None else dMeSigmaI_dI.T,
adjoint=adjoint
)
else:
return dMeSigmaI_dI * self.MeSigmaDeriv(u, v=v)
@property
def MfRho(self):
"""
Face inner product matrix for \\(\\rho\\). Used in the H-J
formulation
"""
if getattr(self, '_MfRho', None) is None:
self._MfRho = self.mesh.getFaceInnerProduct(self.rho)
return self._MfRho
def MfRhoDeriv(self, u, v=None, adjoint=False):
"""
Derivative of :code:`MfRho` with respect to the model.
"""
if self.rhoMap is None:
return Utils.Zero()
if getattr(self, '_MfRhoDeriv', None) is None:
self._MfRhoDeriv = self.mesh.getFaceInnerProductDeriv(
np.ones(self.mesh.nC)
)(np.ones(self.mesh.nF)) * self.rhoDeriv
if v is not None:
if adjoint is True:
return self._MfRhoDeriv.T*(Utils.sdiag(u)*v)
return Utils.sdiag(u)*(self._MfRhoDeriv*v)
else:
if adjoint is True:
return self._MfRhoDeriv.T*(Utils.sdiag(u))
return Utils.sdiag(u)*(self._MfRhoDeriv)
@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, v=None, adjoint=False):
"""
Derivative of :code:`MfRhoI` with respect to the model.
"""
if self.rhoMap is None:
return Utils.Zero()
if len(self.rho.shape) > 1:
if self.rho.shape[1] > self.mesh.dim:
raise NotImplementedError(
"Full anisotropy is not implemented for MfRhoIDeriv."
)
dMfRhoI_dI = -self.MfRhoI**2
if adjoint is True:
return self.MfRhoDeriv(
dMfRhoI_dI.T*u, v=v, adjoint=adjoint
)
else:
return dMfRhoI_dI * self.MfRhoDeriv(u, v=v)
###############################################################################
# #
# Base EM Survey #
# #
###############################################################################
class BaseEMSurvey(Survey.BaseSurvey):
def __init__(self, srcList, **kwargs):
# Sort these by frequency
self.srcList = srcList
Survey.BaseSurvey.__init__(self, **kwargs)
def eval(self, f):
"""Project fields to receiver locations
:param Fields u: fields object
:rtype: numpy.ndarray
:return: data
"""
data = Survey.Data(self)
for src in self.srcList:
for rx in src.rxList:
data[src, rx] = rx.eval(src, self.mesh, f)
return data
def evalDeriv(self, f):
raise Exception('Use Receivers to project fields deriv.')
###############################################################################
# #
# Base EM Source #
# #
###############################################################################
class BaseEMSrc(Survey.BaseSrc):
loc = properties.Array("location of the source", shape={(3,), ('*', 3)})
integrate = properties.Bool("integrate the source term?", default=False)
def eval(self, prob):
"""
- :math:`s_m` : magnetic source term
- :math:`s_e` : electric source term
:param BaseFDEMProblem prob: FDEM Problem
:rtype: tuple
:return: tuple with magnetic source term and electric source term
"""
s_m = self.s_m(prob)
s_e = self.s_e(prob)
return s_m, s_e
def evalDeriv(self, prob, v=None, adjoint=False):
"""
Derivatives of the source terms with respect to the inversion model
- :code:`s_mDeriv` : derivative of the magnetic source term
- :code:`s_eDeriv` : derivative of the electric source term
:param BaseFDEMProblem prob: FDEM Problem
:param numpy.ndarray v: vector to take product with
:param bool adjoint: adjoint?
:rtype: tuple
:return: tuple with magnetic source term and electric source term
derivatives times a vector
"""
if v is not None:
return (
self.s_mDeriv(prob, v, adjoint),
self.s_eDeriv(prob, v, adjoint)
)
else:
return (
lambda v: self.s_mDeriv(prob, v, adjoint),
lambda v: self.s_eDeriv(prob, v, adjoint)
)
def s_m(self, prob):
"""
Magnetic source term
:param BaseFDEMProblem prob: FDEM Problem
:rtype: numpy.ndarray
:return: magnetic source term on mesh
"""
return Utils.Zero()
def s_e(self, prob):
"""
Electric source term
:param BaseFDEMProblem prob: FDEM Problem
:rtype: numpy.ndarray
:return: electric source term on mesh
"""
return Utils.Zero()
def s_mDeriv(self, prob, v, adjoint=False):
"""
Derivative of magnetic source term with respect to the inversion model
:param BaseFDEMProblem prob: FDEM Problem
:param numpy.ndarray v: vector to take product with
:param bool adjoint: adjoint?
:rtype: numpy.ndarray
:return: product of magnetic source term derivative with a vector
"""
return Utils.Zero()
def s_eDeriv(self, prob, v, adjoint=False):
"""
Derivative of electric source term with respect to the inversion model
:param BaseFDEMProblem prob: FDEM Problem
:param numpy.ndarray v: vector to take product with
:param bool adjoint: adjoint?
:rtype: numpy.ndarray
:return: product of electric source term derivative with a vector
"""
return Utils.Zero()