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MathGroup Archive 2001

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RE: ImplicitPlot3d

  • To: mathgroup at smc.vnet.net
  • Subject: [mg32028] RE: [mg32006] ImplicitPlot3d
  • From: "David Park" <djmp at earthlink.net>
  • Date: Wed, 19 Dec 2001 04:29:08 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Daniel,

Needs["Graphics`ContourPlot3D`"]
Needs["Graphics`Shapes`"]

Show[Graphics3D[Sphere[]]];

ContourPlot3D[x^2 + y^2 + z^2 - 1, {x, -3/2, 3/2},
   {y, -3/2, 3/2}, {z, -3/2, 3/2}];

I would be interested in knowing why you can't use ParametricPlot3D because
for plotting surfaces in 3D it is usually by far the best approach.

ParametricPlot3D[{Cos[p]Cos[t], Cos[p]Sin[t], Sin[p]}, {p, -Pi/2, Pi/2}, {t,
    0, 2Pi}, PlotPoints -> {21, 31}]

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

> From: Daniel Meisel [mailto:Daniel.Meisel at Physik.UNI-Karlsruhe.de]
To: mathgroup at smc.vnet.net
>
> Hi,
>
> I'm searching for a way to plot for example the equation
>
> x^2 + y^2 + z^2 =1
>
> ( a sphere around the origin with radius 1) in 3d.
>
> I cannot use the parametric plot command.
>
> thanks in advance
>
>



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