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MathGroup Archive 2000

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Re: Displaying 3D data as 2D + color ?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25175] Re: Displaying 3D data as 2D + color ?
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Tue, 12 Sep 2000 21:24:20 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <8pkka3$m39@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

Needs["DiscreteMath`ComputationalGeometry`"]
data = Table[{Random[], Random[], Random[]}, {15}];
gr = TriangularSurfacePlot[data, DisplayFunction -> Identity]

Show[gr /. Polygon[pnts_] :> {SurfaceColor[Hue[Plus @@ (Last /@ pnts)]], 
        Polygon[pnts]}, DisplayFunction -> $DisplayFunction]

You should scale the Hue[] argument to your scale of the z-axis.

Regards
  Jens

Axel Kowald wrote:
> 
> Hello,
> 
> I got numerical 3D data (x,y,z coordinates) which are NOT lying on a
> grid, but are scattered. I would like to plot them as 2D with the color
> of the points indicating the z value. It seems the standard Mathematica plotting
> commands can't do that :-(
> But I'm sure there must be a package for this problem.
> 
> Any hint is welcomed,
> 
>         Axel
> 
> --


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