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MathGroup Archive 1993

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Re: Mathematica Question

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: Re: Mathematica Question
  • From: markp
  • Date: Tue, 29 Jun 93 10:17:44 -0800

 >Date: Mon, 14 Jun 93 15:33:51 -0700
 >From: cooper at cs.ucla.edu (Mark G. Cooper)
 >To: mathgroup at yoda.physics.unc.edu
 >Subject: Mathematica Question
 >
 >
 >My question was referred to you from Dr. Vidal at UCLA.  I would like to 
 >generate a three-dimensional plot (and get a solution set) for an implicit
 >equation of the form x^2 + y^2 + z^2 + xy + xz + yz == 1 (each of the terms
 >on the left side may be multiplied by a constant--omitted).  The equations
 >that I am working with will form ellipsoids.

Mathematica Version 2.2 has a package, Graphics`ContourPlot3D`, that
will do this. E.g.:

ContourPlot3D[ x^2 + y^2 + z^2 + x y +y  z + z x, 
		{x, -2, 2}, {y, -2, 2}, {z, -2, 2},
                Contours->{1.}]

Mark Pundurs
Publications Department
Wolfram Research, Inc.





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