[R] Sweave with dev.new()

[Gro Nilsen]

Dear list.
I am preparing a R package, and the last step is to write a package
vignette using Sweave. However, I am experiencing some trouble when trying
to include plots in my Sweave document. That is, in my package I have made
some plotting functions in which I start by calling 'new.dev()' to start a
graphics device of a certain width and height, and then proceed with
plot(). These functions work perfectly fine in R, and when I check and
build my package with R CMD build/check.

The problems start when I try to include the command and the output of my
plotting functions in the Sweave document, and I suspect it must have
something to do with the command 'dev.new()' in my code. Here is a basic
example of a Sweave file which can hopefully illustrate the problem:

\documentclass[a4paper]{article}

\usepackage{Sweave}
\RequirePackage{graphicx,fancyvrb}


\title{Sweavetest}

\begin{document}

\section{Plotting}

<<label=testfig,include=FALSE,echo=TRUE>>=
dev.new(width=7,height=6,record=TRUE)
plot(1:10,col="red")
@
\begin{figure}[ht]
\begin{center}
<<label=fig,fig=TRUE,echo=FALSE>>=
<<testfig>>
@
\end{center}
\caption{Testplot}
\label{fig:test}
\end{figure}

\end{document}


When I run Sweave on this file I get empty pdf and eps files named
"Sweavetest-fig.pdf" and "Sweavetest-fig.eps", and the corresponding latex
file is unable to create a PDF-file.

Does anyone know what the problem is, and how I might solve it? This is
the first time that I have worked with Sweave, so I might be missing
something basic...

Best regards,
Gro Nilsen
PhD-student, University of Oslo