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If you can't extract the data directly, there may be workarounds. You can't control the lighting in GE, or else I would suggest the synthetic normals map method. But you can take a stereogram of a gridded overlay and automatically analyze the parallax to generate a height field. Or you could program a raster scan of the cursor and read the altitude data into a file.



Have you tried exctracting elevation data this way yet? This is of real interest...can you provide more details on how to do it?