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Re: programmatically rotating a function plot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99463] Re: programmatically rotating a function plot
  • From: dh <dh at metrohm.com>
  • Date: Wed, 6 May 2009 05:24:18 -0400 (EDT)
  • References: <gtp1a9$jp8$1@smc.vnet.net>


Hi Rodney,

the representation of Graphics seems to have changed. Your replacement 

rule ({x_, y_}:> {-y,x}) catches cases it is not intended for. Therefore 

make it more specific.

I also change the PlotRange:

================================

pic1 = Plot[8 Sin[Pi t] Exp[-t], {t, 0, 4}];



plot4[p_] := Module[{R, p1, p2, p3},

    R[q_] := q /. {x_?NumericQ, y_?NumericQ} :> {-y, x};

    p1 = R[p];

    p2 = R[p1];

    p3 = R[p2];

    Show[{p, p1, p2, p3}, PlotRange -> All]

    ];



plot4[pic1]

================================

Daniel





Rodney wrote:

> This (from some book) worked in Mathematica 4, but not now:

> 

>  - - - - - - - - - - - -

> pic1 = Plot[8 Sin[Pi t] Exp[-t], {t, 0, 4}]

> 

> plot4[p_] := Module[{R, p1, p2, p3},

>      R[q_] := Show[q/.{x_, y_}:> {-y,x}];

>      p1 = R[p]; p2 = R[p1]; p3 = R[p2];

>      Show[p,p1,p2,p3]

> ];

> 

> plot4[pic1]

> 

>  - - - - - - - - - - - - -

> 

> I can't figure out how to do it today.  Thanks for any suggestions.

> 

> 




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