Re: Problem using Evaluate[] inside a Plot command. 5.1

*To*: mathgroup at smc.vnet.net*Subject*: [mg54201] Re: Problem using Evaluate[] inside a Plot command. 5.1*From*: D Herring <dherring at at.uiuc.dot.edu>*Date*: Sun, 13 Feb 2005 00:21:31 -0500 (EST)*References*: <cu78ub$me9$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi Nasser, Maybe Evaluate[OutputResponse[sys,UnitStep[t], t]] is returning a value which needs to be Evaluate[]d again before it can be plotted? I've never had your problem (don't even have the control toolbox), but maybe Plot[{t2, Evaluate[Evaluate[OutputResponse[sys,UnitStep[t], t]]]}, {t, 0, 3}, PlotRange -> All] might work? Your error message, "plot::plnr: .... is not a machine-size real number at t=...." usually indicates the need to Evaluate[] one of the Plot[] arguments. Good luck, Daniel

**Follow-Ups**:**Re: Re: Problem using Evaluate[] inside a Plot command. 5.1***From:*Chris Chiasson <chris.chiasson@gmail.com>