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Re: Aspect Ratio question

  • To: mathgroup at
  • Subject: [mg81304] Re: Aspect Ratio question
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at>
  • Date: Wed, 19 Sep 2007 05:16:47 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <fcnlri$sf1$>

Steven Siew wrote:
> I'm really confused about the steps needed to calculate an Aspect
> Ratio for 2D ploting in mathematica.
> What I want is to plot a circle as a circle on the monitor and not as
> an ellipse.
> My monitor has a physical aspect ratio of  16:10 (aka widescreen
> monitor).
> My monitor has the resolution of  1280 X 800 pixels.
> What should I set the aspect ratio parameter to in Plot[] ?

AspectRatio -> Automatic will work (regardless of the physical 
characteristics of the monitor used).

For instance,

Plot[Sqrt[1 - x^2], {x, -1, 1}, AspectRatio -> Automatic]

(Note that the default values for AspectRatio is 1/GoldenRatio, i.e. 
0.618034..., ratio which is supposedly to be more aesthetically 
pleasing, and so since the Antiquity.)


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