added interfaces generation for FMTOMO from SeisArray
still working on propgrid generation for FMTOMO from SeisArray
This commit is contained in:
Marcel Paffrath
parent
02dbca06f2
commit
54cb6d2f9a
@ -303,9 +303,9 @@ class SeisArray(object):
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self._interpolateXY4rec()
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self.interpZcoords4rec()
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def interpolateTopography(self, nTheta, nPhi, thetaSN, phiWE, method = 'linear', filename = 'interface1.in'):
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def interpolateTopography(self, nTheta, nPhi, thetaSN, phiWE, elevation = 0.25, method = 'linear'):
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'''
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Interpolate Z values on a regular grid with cushion nodes to use it as FMTOMO topography interface.
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Interpolate Z values on a regular grid with cushion nodes e.g. to use it as FMTOMO topography interface.
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Returns a surface in form of a list of points [[x1, y1, z1], [x2, y2, y2], ...] (cartesian).
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:param: nTheta, number of points in theta (NS)
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@ -319,17 +319,38 @@ class SeisArray(object):
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:param: phiWE (W, E) extensions of the model in degree
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type: tuple
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:param: elevation, default: 0.25 (elevate topography so that no source lies above the surface)
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type: float
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'''
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return self.interpolateOnRegularGrid(nTheta, nPhi, thetaSN, phiWE, elevation, method)
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def interpolateOnRegularGrid(self, nTheta, nPhi, thetaSN, phiWE, elevation, method = 'linear'):
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'''
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Interpolate Z values on a regular grid with cushion nodes e.g. to use it as FMTOMO topography interface.
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Returns a surface in form of a list of points [[x1, y1, z1], [x2, y2, y2], ...] (cartesian).
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:param: nTheta, number of points in theta (NS)
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type: integer
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:param: nPhi, number of points in phi (WE)
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type: integer
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:param: thetaSN (S, N) extensions of the model in degree
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type: tuple
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:param: phiWE (W, E) extensions of the model in degree
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type: tuple
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:param: elevation, default: 0.25 (elevate topography so that no source lies above the surface)
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type: float
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'''
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surface = []
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elevation = 0.25 # elevate topography so that no source lies above the surface
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if filename is not None:
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outfile = open(filename, 'w')
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print "Interpolating topography on regular grid with the dimensions:"
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print "Interpolating interface on regular grid with the dimensions:"
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print "nTheta = %s, nPhi = %s, thetaSN = %s, phiWE = %s"%(nTheta, nPhi, thetaSN, phiWE)
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print "method = %s, filename = %s" %(method, filename)
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print "method = %s, elevation = %s" %(method, elevation)
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thetaS, thetaN = thetaSN
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phiW, phiE = phiWE
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@ -352,17 +373,130 @@ class SeisArray(object):
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# in case the point lies outside, nan will be returned. Find nearest:
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if np.isnan(z) == True:
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z = griddata((measured_x, measured_y), measured_z, (xval, yval), method = 'nearest')
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z = float(z)
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z = float(z) + elevation
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surface.append((xval, yval, z))
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count += 1
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progress = float(count) / float(nTotal) * 100
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self._update_progress(progress)
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if filename is not None:
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outfile.writelines('%10s\n'%(z + elevation))
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return surface
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def generateInterfaces(self, nTheta, nPhi, depthmax, cushionfactor = 0.1,
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outfilename = 'interfaces.in', method = 'linear',
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returnInterfaces = False):
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'''
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Create an interfaces.in file for FMTOMO from the SeisArray boundaries.
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:param: nTheta, number of points in Theta
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type: int
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:param: nPhi, number of points in Phi
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type: int
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:param: depthmax, maximum depth of the model (below topography)
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type: float
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:param: cushionfactor, add some extra space to the model (default: 0.1 = 10%)
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type: float
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'''
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nInterfaces = 2
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# generate dimensions of the grid from array
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phiWE, thetaSN = self.getThetaPhiFromArray(cushionfactor)
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thetaS, thetaN = thetaSN
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phiW, phiE = phiWE
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R = 6371.
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outfile = open(outfilename, 'w')
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# determine the deltas
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thetaDelta = abs(thetaN - thetaS) / float((nTheta - 1))
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phiDelta = abs(phiE - phiW) / float((nPhi - 1))
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# write header for interfaces grid file (in RADIANS)
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outfile.writelines('%10s\n' %(nInterfaces))
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outfile.writelines('%10s %10s\n' %(nTheta + 2, nPhi + 2)) # +2 cushion nodes
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outfile.writelines('%10s %10s\n' %(np.deg2rad(thetaDelta), np.deg2rad(phiDelta)))
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outfile.writelines('%10s %10s\n' %(np.deg2rad(thetaS - thetaDelta), np.deg2rad(phiW - phiDelta)))
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interface1 = self.interpolateTopography(nTheta, nPhi, thetaSN, phiWE, method = method)
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interface2 = self.interpolateOnRegularGrid(nTheta, nPhi, thetaSN, phiWE, -depthmax, method = method)
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for point in interface1:
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z = point[2]
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outfile.writelines('%10s\n'%(z + R))
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outfile.writelines('\n')
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for point in interface2:
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z = point[2]
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outfile.writelines('%10s\n'%(z + R))
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outfile.close()
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if returnInterfaces == True:
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return interface1, interface2
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def getThetaPhiFromArray(self, cushionfactor = 0.1):
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'''
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Determine and returns PhiWE (tuple: (West, East)) and thetaSN (tuple (South, North)) from the SeisArray boundaries.
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:param: cushionfactor, add some extra space to the model (default: 0.1 = 10%)
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type: float
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'''
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x, y, _ = self.getAllMeasuredPointsLists()
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phi_min, phi_max = (self._getAngle(min(x)), self._getAngle(max(x)))
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theta_min, theta_max = (self._getAngle(min(y)), self._getAngle(max(y)))
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cushionPhi = abs(phi_max - phi_min) * cushionfactor
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cushionTheta = abs(theta_max - theta_min) * cushionfactor
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phiWE = (phi_min - cushionPhi, phi_max + cushionPhi)
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thetaSN = (theta_min - cushionTheta, theta_max + cushionTheta)
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return phiWE, thetaSN
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def generatePropgrid(self, nTheta, nPhi, nR, Rbt, cushionfactor = 0.1,
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refinement = (5, 5), outfilename = 'propgrid.in'):
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'''
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Create a propergation grid file for FMTOMO using SeisArray boundaries
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:param: nTheta, number of points in Theta
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type: int
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:param: nPhi, number of points in Phi
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type: int
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:param: nR, number of points in R
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type: int
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:param: Rbt (bot, top) extensions of the model in km
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type: tuple
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:param: cushionfactor, add some extra space to the model (default: 0.1 = 10%)
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type: float
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:param: refinement, (refinement factor, number of local cells for refinement) used by FMTOMO
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type: tuple
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'''
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outfile = open(outfilename, 'w')
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R = 6371.
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phiWE, thetaSN = self.getThetaPhiFromArray(cushionfactor)
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thetaS, thetaN = thetaSN
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phiW, phiE = phiWE
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rbot = Rbt[0] + R
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rtop = Rbt[1] + R
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thetaDelta = abs(thetaN - thetaS) / float((nTheta - 1))
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phiDelta = abs(phiE - phiW) / float((nPhi - 1))
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rDelta = abs(rbot - rtop) / float((nR - 1))
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outfile.writelines('%10s %10s %10s\n' %(nR, nTheta, nPhi))
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outfile.writelines('%10s %10s %10s\n' %(rDelta, thetaDelta, phiDelta))
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outfile.writelines('%10s %10s %10s\n' %(Rbt[1], thetaS, phiW))
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outfile.writelines('%10s %10s\n' %refinement)
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outfile.close()
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def generateVgrid(self, nTheta = 80, nPhi = 80, nR = 120,
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Rbt = (-62.0, 6.0), thetaSN = None,
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phiWE = None, outfilename = 'vgrids.in',
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@ -395,10 +529,10 @@ class SeisArray(object):
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type: str
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'''
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def getRad(angle):
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PI = np.pi
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rad = angle / 180 * PI
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return rad
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# def getRad(angle):
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# PI = np.pi
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# rad = angle / 180 * PI
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# return rad
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def readMygridNlayers(filename):
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infile = open(filename, 'r')
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@ -429,19 +563,12 @@ class SeisArray(object):
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R = 6371.
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vmin = 0.34
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cushionfactor = 0.1 # add some extra space to the model
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decm = 0.3 # diagonal elements of the covariance matrix (grid3dg's default value is 0.3)
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outfile = open(outfilename, 'w')
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# generate dimensions of the grid from array
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if thetaSN is None and phiWE is None:
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x, y, _ = self.getAllMeasuredPointsLists()
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phi_min, phi_max = (self._getAngle(min(x)), self._getAngle(max(x)))
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theta_min, theta_max = (self._getAngle(min(y)), self._getAngle(max(y)))
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cushionPhi = abs(phi_max - phi_min) * cushionfactor
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cushionTheta = abs(theta_max - theta_min) * cushionfactor
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phiWE = (phi_min - cushionPhi, phi_max + cushionPhi)
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thetaSN = (theta_min - cushionTheta, theta_max + cushionTheta)
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phiWE, thetaSN = self.getThetaPhiFromArray()
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thetaS, thetaN = thetaSN
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phiW, phiE = phiWE
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@ -464,10 +591,10 @@ class SeisArray(object):
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# write header for velocity grid file (in RADIANS)
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outfile.writelines('%10s %10s \n' %(1, 1))
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outfile.writelines('%10s %10s %10s\n' %(nR + 2, nTheta + 2, nPhi + 2))
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outfile.writelines('%10s %10s %10s\n' %(rDelta, getRad(thetaDelta), getRad(phiDelta)))
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outfile.writelines('%10s %10s %10s\n' %(rbot - rDelta, getRad(thetaS - thetaDelta), getRad(phiW - phiDelta)))
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outfile.writelines('%10s %10s %10s\n' %(rDelta, np.deg2rad(thetaDelta), np.deg2rad(phiDelta)))
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outfile.writelines('%10s %10s %10s\n' %(rbot - rDelta, np.deg2rad(thetaS - thetaDelta), np.deg2rad(phiW - phiDelta)))
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surface = self.interpolateTopography(nTheta, nPhi, thetaSN, phiWE, method = method, filename = None)
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surface = self.interpolateTopography(nTheta, nPhi, thetaSN, phiWE, method = method)
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print("\nGenerating velocity grid for FMTOMO. "
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"Output filename = %s, interpolation method = %s"%(outfilename, method))
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@ -511,7 +638,16 @@ class SeisArray(object):
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print('Wrote %d points to file %s for %d layers'%(count, outfilename, nlayers))
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outfile.close()
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def addCheckerboard(self, spacing = 20, pertubation = 1, inputfile = 'vgrids.in', outputfile = 'vgrids_cb.in'):
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def addCheckerboard(self, spacing = 20., pertubation = 0.1, inputfile = 'vgrids.in', outputfile = 'vgrids_cb.in'):
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'''
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Add a checkerboard to an existing vgrids.in velocity model.
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:param: spacing, size of the tiles
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type: float
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:param: pertubation, pertubation (default: 0.1 = 10%)
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type: float
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'''
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def readNumberOfPoints(filename):
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fin = open(filename, 'r')
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vglines = fin.readlines()
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@ -631,7 +767,7 @@ class SeisArray(object):
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evenOddP = -1
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velocity = vel[count]
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evenOdd = evenOddR * evenOddT * evenOddP
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velocity += evenOdd * pertubation
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velocity += evenOdd * pertubation * velocity
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outfile.writelines('%10s %10s\n'%(velocity, decm))
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count += 1
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@ -639,6 +775,8 @@ class SeisArray(object):
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progress = float(count) / float(nPoints) * 100
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self._update_progress(progress)
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print('Added checkerboard to the grid in file %s with a spacing of %s and a pertubation of %s [km/s]. '
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'Outputfile: %s.'%(inputfile, spacing, pertubation, outputfile))
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outfile.close()
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def exportAll(self, filename = 'interpolated_receivers.out'):
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