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Re: Contour Plotting on a sphere

  • To: mathgroup at
  • Subject: [mg15320] Re: Contour Plotting on a sphere
  • From: sidles at (John Sidles)
  • Date: Fri, 8 Jan 1999 04:15:10 -0500
  • Organization: University of Washington, Seattle
  • References: <76cih0$> <76fgab$>
  • Sender: owner-wri-mathgroup at

I have had very good luck exporting Mathematica contour plots as
bitmaps, then rendering the bitmap in the public-domain raytracing
program POV-ray, available for most platforms at


The POV-ray syntax for my application looks like:

#declare deepEnergyDissipationSquare = polygon {
    5, <0, 0>, <0, 1>, <1, 1>, <1, 0>, <0, 0>
    texture { 
        finish { ambient 0.4 diffuse 0.4 specular 0.2 }
        pigment{image_map { gif "Dissipation.GIF" transmit all 0.3}}}

Here the file "Dissipation.GIF" is a Mathematica bitmap.

In POV-ray, image_maps can be rotated, scaled, wrapped onto a sphere or
cylinder, made transparent  ... pretty much anything  you want.  It
makes a nice adjunct for Mathematica. There is a learning curve,

Good luck ... JAS

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