[R] Sweave-LaTEX question

Dieter Menne dieter.menne at menne-biomed.de
Sun Oct 12 11:24:28 CEST 2008

cls59 <sharpsteen <at> mac.com> writes:

> The final piece is a good TeX-aware editor, for windows I prefer WinEdt:

I would like to add Tinn-R.

> However, if you are running something like an optimization
> routine which takes five minutes, you will be waiting five minutes every
> time you typeset the document. 

Package cacheSweave provides a nice way around this. However, I prefer the
semi-manual way: Results of long computation are stored in an RData file, which
I delete when I want a recomp. Then use something like:

# if file x.rdata exist, sources x.r; otherwise, loads x.rdata
loadcache = function (x) {
 rda1 =  strsplit(x,"/")[[1]]
 rda1 = paste(rda1[length(rda1)],".rdata",sep="")
 if ( !file.exists(rda1))
 if ( !file.exists(rda1)) {
   stop("File", rda," could not be created")
 load(rda1, .GlobalEnv)


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