Working on reading DCIP 3D

SimPEG/DCIP/BaseDC.py

@@ -849,3 +849,6 @@ def readUBC_DC2DMesh(fileName):
     tensMsh = Mesh.TensorMesh([dx,dz],(x0, z0))
     return tensMsh
 
+
+
+

SimPEG/DCIP/DCIPUtils/__init__.py

@@ -0,0 +1 @@
+from readUBC_DC3Dobs import *

SimPEG/DCIP/DCIPUtils/readUBC_DC3Dobs.py

@@ -0,0 +1,101 @@
+from SimPEG import np
+import SimPEG.DCIP as DCIP
+
+def genActiveindfromTopo(mesh, topo):        
+    if mesh.dim==3:
+        nCxy = mesh.nCx*mesh.nCy
+        Zcc = mesh.gridCC[:,2].reshape((nCxy, mesh.nCz), order='F')
+        Ftopo = NearestNDInterpolator(topo[:,:2], topo[:,2])
+        XY = Utils.ndgrid(mesh.vectorCCx, mesh.vectorCCy)
+        XY.shape
+        topo = Ftopo(XY)
+        actind = []                    
+        for ixy in range(nCxy):
+            actind.append(topo[ixy] <= Zcc[ixy,:])
+    else:
+        raise NotImplementedError("Only 3D is working")
+
+    return actind
+
+def gettopoCC(mesh, airind):
+	mesh2D = Mesh.TensorMesh([mesh.hx, mesh.hy], mesh.x0[:2])
+	zc = mesh.gridCC[:,2]
+	AIRIND = airind.reshape((mesh.vnC[0]*mesh.vnC[1],mesh.vnC[2]), order='F')
+	ZC = zc.reshape((mesh.vnC[0]*mesh.vnC[1], mesh.vnC[2]), order='F')
+	topo = np.zeros(ZC.shape[0])
+	topoCC = np.zeros(ZC.shape[0])
+	for i in range(ZC.shape[0]):
+	    ind  = np.argmax(ZC[i,:][~AIRIND[i,:]])
+	    topo[i] = ZC[i,:][~AIRIND[i,:]].max() + mesh.hz[~AIRIND[i,:]][ind]*0.5
+	    topoCC[i] = ZC[i,:][~AIRIND[i,:]].max() 
+	XY = Utils.ndgrid(mesh.vectorCCx, mesh.vectorCCy)
+	return topoCC
+
+def readUBC_DC3Dobs(filename,mesh,topo,probType="CC"):
+	text_file = open("./mill_dc.dat", "r")
+	lines = text_file.readlines()
+	text_file.close()
+	SRC = []
+	DATA = []
+	srcLists = []
+	isrc = 0
+	airind = genActiveindfromTopo(mesh, topo)
+	topoCC, topoCCind = gettopoCC(mesh, airind)	
+
+	for line in lines:
+	    if "!" in line.split(): continue
+	    elif line == '\n': continue
+	    elif line == ' \n': continue
+	    temp =  map(float, line.split())
+	    # Read a line for the current electrode
+	    if len(temp) == 5: # SRC: Only X and Y are provided (assume no topography)
+	        #TODO consider topography and assign the closest cell center in the earth                        
+	        if isrc == 0:
+	            DATA_temp = []
+	        else:
+	            DATA.append(np.asarray(DATA_temp))
+	            DATA_temp = []
+	            indM = Utils.closestPoints(mesh2D, DATA[isrc-1][:,1:3])
+	            indN = Utils.closestPoints(mesh2D, DATA[isrc-1][:,3:5])
+	            rx = DC.RxDipole(np.c_[DATA[isrc-1][:,1:3], topoCC[indM]], np.c_[DATA[isrc-1][:,3:5], topoCC[indN]])        
+	            temp = np.asarray(temp)
+	            if [SRC[isrc-1][0], SRC[isrc-1][1]] == [SRC[isrc-1][2], SRC[isrc-1][3]]:
+	                indA = Utils.closestPoints(mesh2D, [SRC[isrc-1][0], SRC[isrc-1][1]])
+	                tx = DC.SrcDipole([rx], [SRC[isrc-1][0], SRC[isrc-1][1], topoCC[indA]],[mesh.vectorCCx.max(), mesh.vectorCCy.max(), topoCC[-1]])
+	            else:
+	                indA = Utils.closestPoints(mesh2D, [SRC[isrc-1][0], SRC[isrc-1][1]])
+	                indB = Utils.closestPoints(mesh2D, [SRC[isrc-1][2], SRC[isrc-1][3]])
+	                tx = DC.SrcDipole([rx], [SRC[isrc-1][0], SRC[isrc-1][1], topoCC[indA]],[SRC[isrc-1][2], SRC[isrc-1][3], topoCC[indB]])
+	            srcLists.append(tx)
+	        SRC.append(temp)
+	        isrc += 1
+	    elif len(temp) == 7: # SRC: X, Y and Z are provided
+	        SRC.append(temp)
+	        isrc += 1
+	    elif len(temp) == 6: # 
+	        DATA_temp.append(np.r_[isrc, np.asarray(temp)])
+	    elif len(temp) > 7:
+	        DATA_temp.append(np.r_[isrc, np.asarray(temp)])
+	        
+	DATA.append(np.asarray(DATA_temp))
+	DATA_temp = []
+	indM = Utils.closestPoints(mesh2D, DATA[isrc-1][:,1:3])
+	indN = Utils.closestPoints(mesh2D, DATA[isrc-1][:,3:5])
+	rx = DCIP.RxDipole(np.c_[DATA[isrc-1][:,1:3], topoCC[indM]], np.c_[DATA[isrc-1][:,3:5], topoCC[indN]])        
+	temp = np.asarray(temp)
+	if [SRC[isrc-1][0], SRC[isrc-1][1]] == [SRC[isrc-1][2], SRC[isrc-1][3]]:
+	    indA = Utils.closestPoints(mesh2D, [SRC[isrc-1][0], SRC[isrc-1][1]])
+	    tx = DCIP.SrcDipole([rx], [SRC[isrc-1][0], SRC[isrc-1][1], topoCC[indA]],[mesh.vectorCCx.max(), mesh.vectorCCy.max(), topoCC[-1]])
+	else:
+	    indA = Utils.closestPoints(mesh2D, [SRC[isrc-1][0], SRC[isrc-1][1]])
+	    indB = Utils.closestPoints(mesh2D, [SRC[isrc-1][2], SRC[isrc-1][3]])
+	    tx = DCIP.SrcDipole([rx], [SRC[isrc-1][0], SRC[isrc-1][1], topoCC[indA]],[SRC[isrc-1][2], SRC[isrc-1][3], topoCC[indB]])
+	srcLists.append(tx)	        
+	text_file.close()
+	survey = DCIP.SurveyDC(srcLists)
+
+	# Do we need this?
+	SRC = np.asarray(SRC)
+	DATA = np.vstack(DATA)
+
+	return {'DCsurvey':survey, 'airind':airind, 'topoCC':topoCC}

SimPEG/DCIP/__init__.py

@@ -1,3 +1,4 @@
 from BaseDC import *
 from BaseIP import *
+# from DCIPUtils import *
 import Utils