[R] Sweave question

From: Rafael A. Irizarry (ririzarr@jhsph.edu)
Date: Wed 24 Dec 2003 - 02:44:38 EST

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Message-id: <Pine.LNX.4.44.0312231038420.25968-100000@blinux08.biostat.jhsph.edu>

Using Sweave in the tools library (R version 1.8.0: sorry i havent
upgraded), it seems i cant use if statements in R chunks that make graphs.
i have this:

<<fig=TRUE,echo=F>>=
par(mfrow=c(1,1))
if(exists("x"))
        plot(x,x)
else{
  plot(1,1,type="n")
  text(1,1,"data not available.\n")
}
@

and I get this error:

Error: chunk 6
Error in parse(file, n, text, prompt) : parse error

any help is appreciated.

thanks and apologies if this not a problem in R 1.8.1
rafael

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