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D Fournier
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
def plot_pseudoSection(Tx,Rx,data,z0, stype):
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from SimPEG import np, mkvc
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from scipy.interpolate import griddata
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import pylab as plt
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import re
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"""
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Read list of 2D tx-rx location and plot a speudo-section of apparent
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resistivity.
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Assumes flat topo for now...
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Input:
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:param d2D, z0
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:switch stype -> Either 'pdp' (pole-dipole) | 'dpdp' (dipole-dipole)
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Output:
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:figure scatter plot overlayed on image
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Created on Mon December 7th, 2015
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@author: dominiquef
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"""
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#d2D = np.asarray(d2D)
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midl = []
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midz = []
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rho = []
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for ii in range(len(Tx)):
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# Get distances between each poles
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rC1P1 = np.abs(Tx[ii][0] - Rx[ii][:,0])
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rC2P1 = np.abs(Tx[ii][1] - Rx[ii][:,0])
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rC1P2 = np.abs(Tx[ii][1] - Rx[ii][:,1])
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rC2P2 = np.abs(Tx[ii][0] - Rx[ii][:,1])
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rP1P2 = np.abs(Rx[ii][:,1] - Rx[ii][:,0])
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# Compute apparent resistivity
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if re.match(stype,'pdp'):
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rho = np.hstack([rho, data[ii] * 2*np.pi * rC1P1 * ( rC1P1 + rP1P2 ) / rP1P2] )
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elif re.match(stype,'dpdp'):
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rho = np.hstack([rho, data[ii] * 2*np.pi / ( 1/rC1P1 - 1/rC2P1 - 1/rC1P2 + 1/rC2P2 ) ])
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Cmid = (Tx[ii][0] + Tx[ii][1])/2
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Pmid = (Rx[ii][:,0] + Rx[ii][:,1])/2
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midl = np.hstack([midl, ( Cmid + Pmid )/2 ])
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midz = np.hstack([midz, -np.abs(Cmid-Pmid)/2 + z0 ])
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# Grid points
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grid_x, grid_z = np.mgrid[np.min(midl):np.max(midl), np.min(midz):np.max(midz)]
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grid_rho = griddata(np.c_[midl,midz], np.log10(abs(1/rho.T)), (grid_x, grid_z), method='linear')
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#plt.subplot(2,1,2)
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plt.imshow(grid_rho.T, extent = (np.min(midl),np.max(midl),np.min(midz),np.max(midz)), origin='lower', alpha=0.8)
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#plt.colorbar()
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# Plot apparent resistivity
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plt.scatter(midl,midz,s=50,c=np.log10(abs(1/rho.T)))
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