Re: Supressing Plot Output
- To: mathgroup at smc.vnet.net
- Subject: [mg16421] Re: Supressing Plot Output
- From: "hsn" <hsn at NOSPAM.ifa.au.dk>
- Date: Sat, 13 Mar 1999 02:21:38 -0500
- Organization: Hans & Humørgarden
- References: <7c59gj$7n3@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Benjamin Rahn <brahn at fas.harvard.edu> skrev i artiklen
<7c59gj$7n3 at smc.vnet.net>...
> How can I overlay plots and graphics primitives _without_ displaying the
> individual plots first?
>
> For example, I have a function that creates a plot of a spiral based
> on three points in the plane:
>
> Spiral[A_,B_,C_]:=Module[ ...
> ...;
> ParametricPlot[...] ];
>
> The function Spiral[] immediately generates the spiral, so the
> command
>
> Show[Spiral[P,Q,R],Graphics[Line[{P,Q,R,P}]]];
>
> gives two outputs: an image of the spiral by itself, and an image of the
> spiral with the overlaid triangle. How can I restrict the output to the
> second image?
>
> Thanks!
>
> -Ben
>
In your plotting commands use the option DisplayFunction->Identity, and
then when it's time to show them use the option
DisplayFunction->$DisplayFunction. e.g.
p1=Plot[x^2,{x,-2,2},DisplayFunction->Identity]
p2=Plot[x^3,{x,-2,2},DisplayFunction->Identity]
Show[p1,p2,DisplayFunction->$DisplayFunction]
Hans