[R] Sweave encoding problem

[Rau, Roland]

Hi Gerrit,

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of Gerrit Voigt
> Sent: Monday, January 19, 2009 4:48 PM
> To: r-help at r-project.org
> Subject: [R] Sweave encoding problem
> 
> Hello,
> Sweave seems to have trouble processing german letters in R.
> For example, my noweb R-input looks like this.
> <<>>=
> Oberflächenfehler = c(4, 11, 6, 2, 7, 9)
> @
> If I send it through Sweave, I get the following error message.
> 
> error:  chunk 1
> Error in parse(text = chunk) : unexpected input in "Oberflä"
> extra: Warning message:
> In readLines(f[1]) :
>    underfull last line in "C:\...."
> 
> (my R is in german, so I needed to translate the error 
> message myself.)
> 
> I got the impression, that this is an encoding issue of 
> Sweave, since  
> the input typed into R directly works just fine. The encoding 
> I use in  
> my noweb document is utf8.

I don't think it has something to do with German letters.
I saved the following text in a file 'sweavy.Snw':
\documentclass{article}

\begin{document}
Hello World!

<<>>=
1+1
@ 

<<>>=
Oberflächenfehler = c(4, 11, 6, 2, 7, 9)
@
\end{document}

This is what happened in R:
> library(utils)
> Sweave("sweavy.Snw")
Writing to file sweavy.tex
Processing code chunks ...
 1 : echo term verbatim
 2 : echo term verbatim

You can now run LaTeX on 'sweavy.tex'
> 
> sessionInfo()
R version 2.7.0 (2008-04-22) 
i386-pc-mingw32 

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

And also the dvi looked fine after processing "latex sweavy.tex"
To make things sure, I did in my editor (GNU Emacs 22.1.50.1)
C-x RET f utf-8
to change 
set-buffer-file-coding-system to utf-8.
Still works fine.

Maybe this helps you further to track down the reason for the problem?!?

Best,
Roland

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