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MathGroup Archive 2001

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RE: Switching x and y axes in 2D plots

  • To: mathgroup at smc.vnet.net
  • Subject: [mg31234] RE: [mg31223] Switching x and y axes in 2D plots
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sat, 20 Oct 2001 04:27:08 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Bertil,

ParametricPlot[{x,f[x]},{x,xmin,xmax}] is a substitute for
Plot[f[x],{x,xmin,xmax}]

So to plot a function x = f[y] you could use:

ParametricPlot[{f[y],y},{y,ymin,ymax}]

For example:
f[y_] := y Sin[y]
ParametricPlot[{f[y], y}, {y, -Pi, Pi}];

If you have a lot of graphic elements, and you want to switch them all,
another method is to extract the primitive graphics and then use a
transformation rule on all the points.

{primitive graphics}/.{x_?NumericQ, y_NumericQ}->{y,x}

This is easy to do with my DrawGraphics packages because the primitive
graphics are immediately available.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

> From: Bertil Jonell [mailto:d9bertil at dtek.chalmers.se]
To: mathgroup at smc.vnet.net
>
>
>   Is there an easy way of switching the x and y axes in 2D plots?
>
>   I'm asking because I'm trying to print out an maneuvering envelope
> plot, and they traditionally have altitude (independent variable) on
> the *vertical* axis and velocity (dependent) on the horizontal axis.
>
> -bertil- (d9bertil at dtek.chalmers.se)
> --
> "It can be shown that for any nutty theory, beyond-the-fringe
> political view or
>  strange religion there exists a proponent on the Net. The proof
> is left as an
>  exercise for your kill-file."
>



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