Test examples

SimPEG/Examples/DCfwd.py

@@ -5,67 +5,73 @@
 
 ## 2D DC forward modeling example with Tensor and Curvilinear Meshes
 
-# Step1: Generate Tensor and Curvilinear Mesh
-sz = [40,40]
-# Tensor Mesh
-tM = Mesh.TensorMesh(sz)
-# Curvilinear Mesh
-rM = Mesh.CurvilinearMesh(Utils.meshutils.exampleLrmGrid(sz,'rotate'))
+def run(plotIt=True):
+    # Step1: Generate Tensor and Curvilinear Mesh
+    sz = [40,40]
+    # Tensor Mesh
+    tM = Mesh.TensorMesh(sz)
+    # Curvilinear Mesh
+    rM = Mesh.CurvilinearMesh(Utils.meshutils.exampleLrmGrid(sz,'rotate'))
 
-# Step2: Direct Current (DC) operator
-def DCfun(mesh, pts):
-    D = mesh.faceDiv
-    G = D.T
-    sigma = 1e-2*np.ones(mesh.nC)
-    Msigi = mesh.getFaceInnerProduct(1./sigma)
-    MsigI = Utils.sdInv(Msigi)
-    A = D*MsigI*G
-    A[-1,-1] /= mesh.vol[-1] # Remove null space
-    rhs = np.zeros(mesh.nC)
-    txind = Utils.meshutils.closestPoints(mesh, pts)
-    rhs[txind] = np.r_[1,-1]
-    return A, rhs
+    # Step2: Direct Current (DC) operator
+    def DCfun(mesh, pts):
+        D = mesh.faceDiv
+        G = D.T
+        sigma = 1e-2*np.ones(mesh.nC)
+        Msigi = mesh.getFaceInnerProduct(1./sigma)
+        MsigI = Utils.sdInv(Msigi)
+        A = D*MsigI*G
+        A[-1,-1] /= mesh.vol[-1] # Remove null space
+        rhs = np.zeros(mesh.nC)
+        txind = Utils.meshutils.closestPoints(mesh, pts)
+        rhs[txind] = np.r_[1,-1]
+        return A, rhs
 
-pts = np.vstack((np.r_[0.25, 0.5], np.r_[0.75, 0.5]))
+    pts = np.vstack((np.r_[0.25, 0.5], np.r_[0.75, 0.5]))
 
-#Step3: Solve DC problem (LU solver)
-AtM, rhstM = DCfun(tM, pts)
-AinvtM = SolverLU(AtM)
-phitM = AinvtM*rhstM
+    #Step3: Solve DC problem (LU solver)
+    AtM, rhstM = DCfun(tM, pts)
+    AinvtM = SolverLU(AtM)
+    phitM = AinvtM*rhstM
 
-ArM, rhsrM = DCfun(rM, pts)
-AinvrM = SolverLU(ArM)
-phirM = AinvrM*rhsrM
+    ArM, rhsrM = DCfun(rM, pts)
+    AinvrM = SolverLU(ArM)
+    phirM = AinvrM*rhsrM
 
-#Step4: Making Figure
-fig, axes = plt.subplots(1,2,figsize=(12*1.2,4*1.2))
-label = ["(a)", "(b)"]
-opts = {}
-vmin, vmax = phitM.min(), phitM.max()
-dat = tM.plotImage(phitM, ax=axes[0], clim=(vmin, vmax), grid=True)
+    if not plotIt: return
 
-#TODO: At the moment Curvilinear Mesh do not have plotimage 
+    #Step4: Making Figure
+    fig, axes = plt.subplots(1,2,figsize=(12*1.2,4*1.2))
+    label = ["(a)", "(b)"]
+    opts = {}
+    vmin, vmax = phitM.min(), phitM.max()
+    dat = tM.plotImage(phitM, ax=axes[0], clim=(vmin, vmax), grid=True)
 
-Xi = tM.gridCC[:,0].reshape(sz[0], sz[1], order='F')
-Yi = tM.gridCC[:,1].reshape(sz[0], sz[1], order='F')
-PHIrM = griddata(rM.gridCC[:,0], rM.gridCC[:,1], phirM, Xi, Yi, interp='linear')
-axes[1].contourf(Xi, Yi, PHIrM, 100, vmin=vmin, vmax=vmax)
+    #TODO: At the moment Curvilinear Mesh do not have plotimage
 
-cb = plt.colorbar(dat[0], ax=axes[0]); cb.set_label("Voltage (V)")
-cb = plt.colorbar(dat[0], ax=axes[1]); cb.set_label("Voltage (V)")
+    Xi = tM.gridCC[:,0].reshape(sz[0], sz[1], order='F')
+    Yi = tM.gridCC[:,1].reshape(sz[0], sz[1], order='F')
+    PHIrM = griddata(rM.gridCC[:,0], rM.gridCC[:,1], phirM, Xi, Yi, interp='linear')
+    axes[1].contourf(Xi, Yi, PHIrM, 100, vmin=vmin, vmax=vmax)
 
-tM.plotGrid(ax=axes[0], **opts)
-axes[0].set_title('TensorMesh')
-rM.plotGrid(ax=axes[1], **opts)
-axes[1].set_title('CurvilinearMesh')
-for i in range(2):
-    axes[i].set_xlim(0.025, 0.975)
-    axes[i].set_ylim(0.025, 0.975)
-    axes[i].text(0., 1.0, label[i], fontsize=20)
-    if i==0:        
-        axes[i].set_ylabel("y")
-    else:
-        axes[i].set_ylabel(" ")
-    axes[i].set_xlabel("x")
+    cb = plt.colorbar(dat[0], ax=axes[0]); cb.set_label("Voltage (V)")
+    cb = plt.colorbar(dat[0], ax=axes[1]); cb.set_label("Voltage (V)")
 
-plt.show()
+    tM.plotGrid(ax=axes[0], **opts)
+    axes[0].set_title('TensorMesh')
+    rM.plotGrid(ax=axes[1], **opts)
+    axes[1].set_title('CurvilinearMesh')
+    for i in range(2):
+        axes[i].set_xlim(0.025, 0.975)
+        axes[i].set_ylim(0.025, 0.975)
+        axes[i].text(0., 1.0, label[i], fontsize=20)
+        if i==0:
+            axes[i].set_ylabel("y")
+        else:
+            axes[i].set_ylabel(" ")
+        axes[i].set_xlabel("x")
+
+    plt.show()
+
+if __name__ == '__main__':
+    run()

SimPEG/Examples/__init__.py

@@ -1 +1 @@
-import Linear
+import Linear, DCfwd

tests/examples/test_example_linear.py → tests/examples/test_examples.py

@@ -1,13 +1,17 @@
 import unittest
 import sys
-from SimPEG.Examples import Linear
+from SimPEG.Examples import Linear, DCfwd
 import numpy as np
 
 class TestLinear(unittest.TestCase):
-
     def test_running(self):
         Linear.run(100, plotIt=False)
         self.assertTrue(True)
 
+class TestDCfwd(unittest.TestCase):
+    def test_running(self):
+        DCfwd.run(plotIt=False)
+        self.assertTrue(True)
+
 if __name__ == '__main__':
     unittest.main()