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MathGroup Archive 2004

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Re: 3D graph with assumptions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50828] Re: 3D graph with assumptions
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 22 Sep 2004 04:52:07 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <ciqvj2$im4$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

sample the data points {x,y,f[x,y]} and use 
TringularSurfacePlot[] from DiscreteMath`ComputationalGeometry`

Regards
  Jens

Mukhtar wrote:
> 
> Suppose I have f(x,y) that I need to Plot in 3D, however, the range of
> x is (0,1) while the range of y is (0,g(x)), where g(x) is some
> explicit function of x, say x^1/2.  Is there a way to do it since
> specifying it directly the way I outlined above in Plot3D gives me the
> error message that "Plot3D :: plln: Limiting value g(x) in {y,0,g(x)}
> is not a machine-size real number". Perhaps I can do this indirectly
> by plotting two surfaces and then consider the relevant part of
> surface f(x,y), however, it would look ugly. Thanks.


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