R help - Dec 2004 - lattice graphics empty in Sweave

Hello,

I have problems using lattice graphics together with Sweave under 
Windows XP and R 2.0.0; 2.0.1 Patched; 2.1.0 devel respectively.
Base graphics are o.k., but for lattice graphics empty files (.eps and 
.pdf) are generated.

The only workaround I found was to write and read the respective figures 
explicitely using postscript() and includegraphics{}.

Have I missed something to solve this in the canonical way?

Thomas P.

A minimal example:


===
lattice.Rnw=====================================================\documentclass[a4paper,
dvips]{article}
\begin{document}

<<fig=TRUE>>   library(lattice)
   data(iris)
   xyplot(Sepal.Length~Sepal.Width|Species, data=iris)
@

\end{document}
====================================================================

in R:

 > Stangle("lattice.Rnw")
 > Sweave("lattice.Rnw")
 > system("latex lattice")
 > system("dvips lattice")

Thomas Petzoldt writes:
> === lattice.Rnw=====================================================>
\documentclass[a4paper, dvips]{article}
> \begin{document}
> 
> <<fig=TRUE>>>   library(lattice)
>   data(iris)
>   xyplot(Sepal.Length~Sepal.Width|Species, data=iris)
> @
> 
> \end{document}
> ====================================================================> 
        This is addressed in Sweave's and R's FAQ.

http://www.ci.tuwien.ac.at/~leisch/Sweave/FAQ.html#x1-8000A.6
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f



--
Fernando Henrique Ferraz P. da Rosa
http://www.ime.usp.br/~feferraz