Re: [Rd] literate programming

From: <Friedrich.Leisch_at_stat.uni-muenchen.de>
Date: Thu, 07 Aug 2008 08:14:26 +0200

>>>>> On Wed, 6 Aug 2008 10:25:38 -0500 (CDT), >>>>> Terry Therneau (TT) wrote:

> "ESS supported noweb before Sweave existed."
> That is the bit I didn't know. What I was rather looking for was a noweb
> mode that knows about S formatting, and here it was available all along. I've
> used a version of ESS for a loooong time - probably should re-read the
> documentation one of these days to catch up on all the new
> features!

> "and the latex
> syntax was added lateron because some people write whole packages using
> noweb and would have had a syntax conflict in their vignettes"

> I'm not quite sure what this means.
  

Well, you can write your Sweave files also looking like


This is some latex documentation bla bla bla

And here comes a code chuck:

\begin{Scode}{echo=FALSE,fig=TRUE}
plot(rnorm(100))
\end{Scode}

and here we go again with latex


and Sweave will process it correctly (if the file has extension .Rtex). As Sweave does not use noweb's magic <<>>= tags in this case, you can use those for regular noweb processing. Of course you loose the nice handling of code chunks by ESS in that case ...

Best,
Fritz



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