initial upload

cookbook/tess2prism_flatten/plot.py

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+"""
+Plot the columns of the output files
+"""
+import sys
+import pylab
+
+data = pylab.loadtxt(sys.argv[1], unpack=True)
+shape = (int(sys.argv[2]), int(sys.argv[3]))
+lon = pylab.reshape(data[0], shape)*0.001
+lat = pylab.reshape(data[1], shape)*0.001
+xmin, xmax = lon.min(), lon.max()
+ymin, ymax = lat.min(), lat.max()
+for i, value in enumerate(data[3:]):
+    value = pylab.reshape(value, shape)
+    pylab.figure(figsize=(4, 3))
+    pylab.title("Column %d" % (i + 4))
+    pylab.axis('scaled')
+    pylab.pcolor(lon, lat, value)
+    pylab.colorbar()
+    pylab.contour(lon, lat, value, 12, color='k')
+    #pylab.xlabel("Longitude")
+    #pylab.ylabel("Latitude")
+    pylab.xlim(xmin, xmax)
+    pylab.ylim(ymin, ymax)
+    pylab.savefig('column%d.png' % (i + 4))

cookbook/tess2prism_flatten/sample-prism-model.txt

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+# Prisms converted from tesseroid model with tess2prism 1.1dev
+#   local time: Tue May  8 14:55:02 2012
+#   tesseroids file: stdin
+#   conversion type: flatten
+#   format: x1 x2 y1 y2 z1 z2 density
+# Test tesseroid model file
+1111100 1666650 1111100 1666650 0 30000 487.534658568521
+-1111100 1111100 -1666650 -1111100 0 50000 198.175508383774
+-1777760 -1111100 -1666650 555550 0 30000 -291.9029748328

cookbook/tess2prism_flatten/tess-model.txt

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+# Test tesseroid model file
+10 15 10 15 0 -30000 500
+-15 -10 -10 10 0 -50000 200
+-15 5 -16 -10 0 -30000 -300

cookbook/tess2prism_flatten/tess2prism_flatten.bat

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+
+
+:: Generate a prism model from a tesseroid model by
+:: flattening the tesseroids (1 degree = 111.11 km).
+:: This way the converted prisms can be used
+:: with the prism* programs in Cartesian coordinates.
+
+tess2prism --flatten < tess-model.txt > prism-model.txt
+
+:: Generate a regular grid in Cartesian coordinates,
+:: pipe the grid to the computation programs,
+:: and dump the result on output.txt
+
+tessgrd -r-3e06/3e06/-3e06/3e06 -b50/50 -z250e03 | ^
+prismpot prism-model.txt | ^
+prismgx prism-model.txt | ^
+prismgy prism-model.txt | ^
+prismgz prism-model.txt | ^
+prismgxx prism-model.txt  | prismgxy prism-model.txt  | ^
+prismgxz prism-model.txt  | prismgyy prism-model.txt  | ^
+prismgyz prism-model.txt  | prismgzz prism-model.txt > output.txt

cookbook/tess2prism_flatten/tess2prism_flatten.sh

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+#!/bin/bash
+
+# Generate a prism model from a tesseroid model by
+# flattening the tesseroids (1 degree = 111.11 km).
+# This way the converted prisms can be used
+# with the prism* programs in Cartesian coordinates.
+
+tess2prism --flatten < tess-model.txt > prism-model.txt
+
+# Generate a regular grid in Cartesian coordinates,
+# pipe the grid to the computation programs,
+# and dump the result on output.txt
+
+tessgrd -r-3e06/3e06/-3e06/3e06 -b50/50 -z250e03 | \
+prismpot prism-model.txt | \
+prismgx prism-model.txt | \
+prismgy prism-model.txt | \
+prismgz prism-model.txt | \
+prismgxx prism-model.txt  | prismgxy prism-model.txt  | \
+prismgxz prism-model.txt  | prismgyy prism-model.txt  | \
+prismgyz prism-model.txt  | prismgzz prism-model.txt > output.txt