Re: Contour List Plot on Surface of Sphere?

*To*: mathgroup at smc.vnet.net*Subject*: [mg30394] Re: Contour List Plot on Surface of Sphere?*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Wed, 15 Aug 2001 01:04:01 -0400 (EDT)*Organization*: Universitaet Leipzig*References*: <9lalg0$ccm$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I have a package for functions to plot contours and colors on a sphere but ContourPlot[] will generate non-convex polygons and the 3d extension would require a a triangulation of the polygons in the contour plot. But the best way would be to make a ContourPlot[]/ ListContourPlot[] an apply it as a Texture on a sphere in MathGL3d. Get["OpenGLViewer`"] cntr = ContourPlot[Sin[phi]*(1 - Cos[th]), {th, 0, Pi}, {phi, 0, 2Pi}, Frame -> False, ColorFunction -> Hue, PlotPoints -> 60, DisplayFunction->Identity]; ss = ParametricPlot3D[{Cos[phi]*Sin[th], Sin[phi]*Sin[th], Cos[th]}, {th, 0, Pi}, {phi, 0, 2Pi},DisplayFunction->Identity]; MVShow3D[ss, MVTexture -> cntr, MVTextureMapType -> MVMeshUVMapping, MVNewScene -> True, MVTextureSize -> 536] You can look at the result at http://phong.informatik.uni-leipzig.de/~kuska/colorsplt.wrl Regards Jens "Warner A. Miller" wrote: > > Hi, > > I want to plot contours of frequency on a spherical surface from a > table of data {theta,phi,frequency} where theta and phi are standard > spherical polar coordinates. These contours will be curves on the > surface of a sphere. Can Mathematica do such a plot? If yes, how? As > far as i know, Mathematica can do contours of f(theta,phi) on a sphere > but can I equally well plot a table of data? Thanks for any help. > > Sincerely, > > Warner A. Miller > Leader, Theoretical Astrophysics Group > Theoretical Division > Los Alamos National Laboratory > wam at lanl.gv