Should be able to use 'image_pattern' I would think. Then it's just a matter of
finding the water/index association and using separate textures and applying
them over top of the original image map transparently. Maybe...
Bob
"mr.art" <mr.### [at] gci net> wrote in message news:3894E471.817EBF90@gci.net...
| The real problem for me is to get the highlighting on the "water"
| areas only. Any ideas? The whole thing is an isosurface with a nice
| pigment map from NASA to overlay the shape. The isosurface is defined by
| a grayscale image from NASA.
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