Re: Plotting a series of piecewise functions
- To: mathgroup at smc.vnet.net
- Subject: [mg88955] Re: Plotting a series of piecewise functions
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 22 May 2008 02:36:45 -0400 (EDT)
- Organization: Uni Leipzig
- References: <g11r06$a7i$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi, you can plot it when you find out that xo is different from x0 because o is a letter and 0 is a digit Plot[Evaluate[Table[f[lambda,x0,x],{lambda,0.5,0.5},{x0,4}]],{x,0,10}] when you define f[lambda_, xo_, x_] := Piecewise[{{lambda*Exp[-lambda*(x - xo)], x > xo}}, 0] Regards Jens Claus wrote: > Hi, > I want to plot a series of functions. Namely I want to plot a series of > 2-parametric exponential distribution functions. By series I mean the > graphs for various xo values on one plot. > So, > the function looks like this: > > f[lambda_, xo_, x_]:=lambda*Exp[-lambda*(x-xo)] > > Now I can plot this (wrongly) with > > Plot[Evaluate[Table[f[lambda,xo,x],{lambda,0.5,0.5},{x0,4}]],{x,0,10}] > > The problem is that, really, f should be zero for x<xo. > I can plot one graph (for xo=1 and lambda=1) like this: > > Plot[Piecewise[{{f[0.5,1,x],x>1},{0,x<1}}],{x,0,10}] > > Now, how could I plot a series of plots (for different xo) on one chart > similarly to the Piecwise approach (can I do it with Piecewise at all, > or do I need an If clause of sorts)? > > Thank you for your help, > Claus >