Re: [R] how to write a periodic function in R?

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Tue 26 Jul 2005 - 01:51:23 EST

On Mon, 25 Jul 2005 lma5@ncsu.edu wrote:

> My question is how to write a periodic function in R.
> for example if there is a function f(x) that
> f(x)=f(x+4), for -2<x<2, f(x)=x
> how to write it in R?

f((x+2)%%4 - 2) is one way.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Tue Jul 26 02:00:26 2005

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