Re: Plots with Variable Limits?

*To*: mathgroup at smc.vnet.net*Subject*: [mg24121] Re: Plots with Variable Limits?*From*: "Allan Hayes" <hay at haystack.demon.co.uk>*Date*: Wed, 28 Jun 2000 02:11:42 -0400 (EDT)*References*: <8j9djn$51e@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Two suggestions f[r_, a_] := Sin[a r + r]; Unevaluated[Plot[ f[x, a], {x, -2a, 2a} ]] /. a -> 3 With[{a = 3}, Plot[ f[x, a], {x, -2a, 2a} ] ] -- Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "A. E. Siegman" <siegman at stanford.edu> wrote in message news:8j9djn$51e 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 >