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 > >