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MathGroup Archive 2000

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Re: 3-D plotting of list in spherical coordinates

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25177] Re: 3-D plotting of list in spherical coordinates
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Tue, 12 Sep 2000 21:24:22 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <8pkl2g$m6g@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

SetCoodinates[] does not change the meaning of Point[{x,y,z}] to
Point[{r,theta,phi}] you must do it by hand and say something like

gr /. {Point[p_]:> Point[CoordinatesToCartesian[p]],
       Polygon[pnts_]:> Polygon[CoordinatesToCartesian /@ pnts] } 

for the graphics primitives you have. 

Regards
  Jens

Siddiq Qidwai wrote:
> 
> Hi All,
> 
> I've an irregular list (20 x 40 grid) of numbers to be plotted in 3-D. The
> data is in spherical coordinates, i.e., r, theta and phi. I've used the
> SetCoordinates[Spherical[r, theta, phi]] and ListSurfacePlot3D commands in
> tandem but they apprently still spews out the plot in cartesian coordinates.
> I use Mathematica version 3.0. Any suggestions please?
> 
> Thanks.
> 
> Siddiq


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