RE: Plots with Variable Limits?
- To: mathgroup at smc.vnet.net
- Subject: [mg24141] RE: [mg24100] Plots with Variable Limits?
- From: "David Park" <djmp at earthlink.net>
- Date: Wed, 28 Jun 2000 02:11:56 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
A.E.,
Changing plot parameters and reevaluating is a common operation. I find a
convenient method is to use a compound statement where the plot parameters
are defined first. So I would do your case like this:
f[x_, a_] := a x^2
a0 = 4;
Plot[f[x, a0], {x, -2a0, 2a0}];
Then, just change the a0 value and reevaluate. This is also a way to
implement zooming.
a0 = 4;
x0 = 1;
delta = 0.5;
Plot[f[x, a0], {x, x0 - delta, x0 + delta}];
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
> -----Original Message-----
> From: A. E. Siegman [mailto:siegman at stanford.edu]
To: mathgroup at smc.vnet.net
>
> I want to make a test plot of a function f[x,a] versus x for some
> trial value of the parameter a without fixing that parameter for
> subsequent cells, e.g. something like
>
> Plot[ f[r,a], {x,-2a,2a} ] /. a->10
>
> If I try this, Mathematica gives me a "Plot::plln" error -- but then
> goes ahead and makes the correct plot anyway.
>
> I can of course turn off the error -- but what's a better, but still
> clean and simple, way to accomplish this.
>
> Thanks siegman at stanford.edu
>
>