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Re: AspectRatio -> 1 vs AspectRatio ->1.25

  • To: mathgroup at smc.vnet.net
  • Subject: [mg122763] Re: AspectRatio -> 1 vs AspectRatio ->1.25
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Thu, 10 Nov 2011 06:50:44 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201111091125.GAA11158@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

ImplicitPlot is obsolete after Mathematica 5.2 and replaced by ContourPlot:

ContourPlot[{7 x^2 - 6 Sqrt[3] x y + 13 y^2 - 16 ==
    0, ((x^2)/2^2) + ((y^2)/2^2) == 1, y == x, y == -x}, {x, -3,
   3}, {y, -3, 3}, AspectRatio -> .75]

Bobby

On Wed, 09 Nov 2011 05:25:37 -0600, John Accardi <johnaccardi at comcast.net>  
wrote:

> Goal: Plot both y = x and y = -x such that then intersect visually at
> 90 degrees.
>
> Intuitively, AspectRatio -> 1 should do this but it takes
> AspectRatio -> 1.25 to accomplish this.
>
> Am I missing something?  Why 1.25 and not 1?
>
> Example:
>
> << Graphics`ImplicitPlot`; ImplicitPlot[{7 x^2 - 6 Sqrt[3] x y +
>      13 y^2 - 16 == 0, ((x^2)/2^2) + ((y^2)/2^2) == 1, y == x,
>    y == -x}, {x, -3, 3}, AspectRatio -> 1.25]
>
> Produces the desired plot using AspectRatio -> 1.25.
>
> Thanks for any insights.


-- 
DrMajorBob at yahoo.com



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