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MathGroup Archive 1997

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Re: scaling 3D axes?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg7112] Re: [mg7086] scaling 3D axes?
  • From: seanross at worldnet.att.net
  • Date: Sun, 11 May 1997 02:57:12 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Bill Simpson wrote:
> 
> I am doing a 3D surface plot using TriangularSurfacePlot.
> I am using Mathematica 2.2.2.
> 
> Needs["DiscreteMath`ComputationalGeometry`"]
> 
> pts=Table[{     {0.6,0.02,0.08}, {0.6,0.05,0.16},  {0.6,0.10,0.21},
> {0.6, 0.25, 0.28},
> {0.6,0.50,0.36}, {0.6,1.00,0.54},{1.5,0.02,2.0}, {1.5,0.05,2.0},
> {1.5,0.10,2.7}, {1.5,0.25,2.4}, {1.5,0.50,1.3},{1.5,1.00,2.7},
> {3.0,0.02,4.2}, {3.0,0.05,2.8}, {3.0,0.10,3.9}, {3.0,0.25,3.6},
> {3.0,0.50,3.1}, {3.0,1.00,3.7},
> {12,0.02,0.81},{12,0.05,1.1},{12,0.10,1.9},
> {12,0.25,3.8}, {12,0.50,3.5}, {12,1.00,3.9}, {18,0.02,0.36},
> {18,0.05,0.55}, {18,0.10,0.77}, {18,0.25,1.5}, {18,0.50,2.9},
> {18,1.00,3.7}, {24,0.10,0.52}, {24,0.25,0.71}, {24,0.50,1.3},
> {24,1.00,2.9}, {30,0.25,0.40}, {30,0.50,0.67}, {30,1.00,1.2},
> {36,1.00,0.71}  }]
> 
> myplot=TriangularSurfacePlot[pts]
> 
> Problem:
> The plot is extremely squished on the y axis.  Mathematica seems to
> assume that all axes have to be on the same scale.  Is there any
> way to make the plot look like a cube, with the axis scales changed
> accordingly? (PlotRange doesn't do this)
> 
> Thanks very much for any help.
> 
> Bill Simpson


There are a few cases where the AspectRatio->Automatic option
malfunctions in mathematica.  The cure is simply to set it manually.  As
a general rule, when a function gives you something unexpected, type
??function to see what all the possible options are.  That will give you
a place to start from by trying them out and seeing what they do.


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