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Re: Piecewise functions

• To: mathgroup at smc.vnet.net
• Subject: [mg8927] Re: [mg8876] Piecewise functions
• From: David Withoff <withoff>
• Date: Sat, 4 Oct 1997 22:08:05 -0400
• Sender: owner-wri-mathgroup at wolfram.com

> Hi !
>
> I would like to know how to represent piecewise linear functions in
> Mathematica.  I tried searching on-line help but could not find any info
> regarding this.
>
> Thanks for your help
>
> Venkat

The answer to this question will depend on what you want to use the
piecewise linear functions for.  You can construct a piecewise linear
function using Interpolation[data, InterpolationOrder -> 1], or
you could use something like Which[x<0, 0, 0<=x<=1, x, x>1, 1], or
you could use some other approach.  The best way will depend on what
you plan to do with the result.

Dave Withoff
Wolfram Research