initial upload

cookbook/tess2prism/plot.py

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+"""
+Plot the columns of the output files
+"""
+import sys
+import pylab
+from mpl_toolkits.basemap import Basemap
+
+# Set up a projection
+bm = Basemap(projection='ortho', lon_0=-80, lat_0=-40,
+             resolution='l', area_thresh=10000)
+
+data = pylab.loadtxt(sys.argv[1], unpack=True)
+shape = (int(sys.argv[2]), int(sys.argv[3]))
+lon = pylab.reshape(data[0], shape)
+lat = pylab.reshape(data[1], shape)
+glon, glat = bm(lon, lat)
+
+for i, value in enumerate(data[3:]):
+    value = pylab.reshape(value, shape)
+    pylab.figure(figsize=(4, 3))
+    pylab.title("Column %d" % (i + 4))
+    bm.drawcoastlines()
+    #bm.fillcontinents(color='coral',lake_color='aqua')
+    #bm.drawmapboundary(fill_color='aqua')
+    bm.drawmapboundary()
+    bm.drawparallels(pylab.arange(-90.,120.,30.))
+    bm.drawmeridians(pylab.arange(0.,420.,60.))
+    #bm.bluemarble()
+    bm.pcolor(glon, glat, value)
+    pylab.colorbar()
+    #bm.contour(glon, glat, value, 12, linewidth=3)
+    pylab.savefig('column%d.png' % (i + 4))

cookbook/tess2prism/result.svg

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="1088.5714"
+   height="1122.8572"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.48.2 r9819"
+   sodipodi:docname="result.svg"
+   inkscape:export-filename="/home/leo/src/tesseroids/dev/cookbook/tess2prism/tess2prism.png"
+   inkscape:export-xdpi="90"
+   inkscape:export-ydpi="90">
+  <defs
+     id="defs4" />
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+     bordercolor="#666666"
+     borderopacity="1.0"
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+     fit-margin-right="0"
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+     id="metadata7">
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+      <cc:Work
+         rdf:about="">
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+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(165.71428,783.35211)">
+    <image
+       y="-509.06641"
+       x="522.85712"
+       id="image3026"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column7.png"
+       height="300"
+       width="400" />
+    <image
+       y="-234.78065"
+       x="522.85712"
+       id="image3059"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column10.png"
+       height="300"
+       width="400" />
+    <image
+       y="39.505058"
+       x="522.85712"
+       id="image3092"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column13.png"
+       height="300"
+       width="400" />
+    <image
+       y="-783.35211"
+       x="179.99997"
+       id="image2993"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column4.png"
+       height="300"
+       width="400" />
+    <image
+       y="-509.06641"
+       x="179.99997"
+       id="image3015"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column6.png"
+       height="300"
+       width="400" />
+    <image
+       y="-234.78065"
+       x="179.99997"
+       id="image3048"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column9.png"
+       height="300"
+       width="400" />
+    <image
+       y="39.505058"
+       x="179.99997"
+       id="image3081"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column12.png"
+       height="300"
+       width="400" />
+    <image
+       y="-509.06641"
+       x="-165.71428"
+       id="image3004"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column5.png"
+       height="300"
+       width="400" />
+    <image
+       y="-234.78065"
+       x="-165.71428"
+       id="image3037"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column8.png"
+       height="300"
+       width="400" />
+    <image
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+       x="-165.71428"
+       id="image3070"
+       xlink:href="file:///home/leo/src/tesseroids/dev/cookbook/tess2prism/column11.png"
+       height="300"
+       width="400" />
+  </g>
+</svg>

cookbook/tess2prism/sample-prism-model.txt

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+# Prisms converted from tesseroid model with tess2prism 1.1dev
+#   local time: Wed May 16 14:34:47 2012
+#   tesseroids file: stdin
+#   conversion type: equal mass|spherical coordinates
+#   format: dx dy dz density lon lat r
+# Test tesseroid model file
+221766.31696055 169882.854778591 50000 499.977196258595 -76 -40 6378137
+221766.31696055 169882.854778591 50000 499.977196258595 -78 -40 6378137
+221766.31696055 169882.854778591 50000 499.977196258595 -80 -40 6378137
+221766.31696055 169882.854778591 50000 499.977196258595 -82 -40 6378137
+221766.31696055 169882.854778591 50000 499.977196258595 -84 -40 6378137

cookbook/tess2prism/tess-model.txt

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+# Test tesseroid model file
+-77 -75 -41 -39 0 -50000 500
+-79 -77 -41 -39 0 -50000 500
+-81 -79 -41 -39 0 -50000 500
+-83 -81 -41 -39 0 -50000 500
+-85 -83 -41 -39 0 -50000 500

cookbook/tess2prism/tess2prism.bat

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+
+
+:: Generate a prism model from a tesseroid model.
+:: Prisms will have the same mass as the tesseroids and
+:: associated spherical coordinates of the center of
+:: the top of the tesseroid.
+
+tess2prism.exe < tess-model.txt > prism-model.txt
+
+:: Generate a regular grid in spherical coordinates,
+:: pipe the grid to the computation programs,
+:: and dump the result on output.txt
+:: prismpots calculates the potential in spherical
+:: coordinates, prismgs calculates the full
+:: gravity vector, and prismggts calculates the full
+:: gravity gradient tensor.
+
+tessgrd -r-160/0/-80/0 -b100/100 -z250e03 | ^
+prismpots prism-model.txt | ^
+prismgs prism-model.txt | ^
+prismggts prism-model.txt -v > output.txt

cookbook/tess2prism/tess2prism.sh

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+#!/bin/bash
+
+# Generate a prism model from a tesseroid model.
+# Prisms will have the same mass as the tesseroids and
+# associated spherical coordinates of the center of
+# the top of the tesseroid.
+
+tess2prism < tess-model.txt > prism-model.txt
+
+# Generate a regular grid in spherical coordinates,
+# pipe the grid to the computation programs,
+# and dump the result on output.txt
+# prismpots calculates the potential in spherical
+# coordinates, prismgs calculates the full
+# gravity vector, and prismggts calculates the full
+# gravity gradient tensor.
+
+tessgrd -r-160/0/-80/0 -b100/100 -z250e03 | \
+prismpots prism-model.txt | \
+prismgs prism-model.txt | \
+prismggts prism-model.txt -v > output.txt