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MathGroup Archive 2006

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Re: 2D/3D plots scaled to unit of dimension

  • To: mathgroup at smc.vnet.net
  • Subject: [mg66113] Re: 2D/3D plots scaled to unit of dimension
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Sun, 30 Apr 2006 04:21:00 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <e2v695$n9g$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Xiangdong Liu wrote:
> I am making 2D and 3D plots that depicts geographic events.  The units in
> each dimension x, y, and z are the same, say meters.  A plot may show 10
> unis in one dimension and 2 units in another.  When I make the plot,
> Mathematica chooses its automatic aspect ratio.  The result is such that
> a unit in the dimension with 3 units shown to be longer than a unit in the
> dimension with 10 units.  Of course I can change the aspect ratio to be 3/10
> (or 10/3 depending on which dimension has more units of content).
> 
> My question is if I can make Mathematica plot with an aspect ratio that
> preserves the unit of length in all dimensions, automatically.  If such
> setting exists, will it be different for 3D plots?
> 
> As an specific example, let's say I want to plot the following:
> 
> Plot[Sin[x], {x, 0, 10}];
> 
> How do I make Mathematica preserve the unit of length by displaying the
> plot with the 1/5 aspect ratio automatically?
> 
> Thanks!
> 

*AspectRatio* is set to 1/GoldenRatio by default. Try

In[1]:=
Plot[Sin[x], {x, 0, 10}, AspectRatio -> Automatic];

For 3D plots, you can set also the *BoxRatio* (set to {1., 1. , 0.4} by 
default).

HTH,
Jean-Marc


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