Latex and Stangle()

sorry for my late reply,

Am 06.05.2010 13:16, schrieb Silvano:

It worked very well.

Thanks Frank and Ruihong, both solutions were great.

you might also want to try out package

          SweaveListingsUtils

from CRAN, which provides some extra features
interfacing the 'listings' package and Sweave;

in particular it supports syntax highlighting in
different styles of attached packages
[dynamic; i.e.; keyword definitions are made only
 at attach time of extra packages]

as well as functionality to include R / Rd source
files (sniplets) copied from an url, thereby
avoiding inconsistencies between vignettes
and documented source code.

I do not know whether this suits
your demands, but anyway...

Kind regards
Peter
[Maintainer of SweaveListingsUtils]