[Tikzdevice-bugs] problems with accents

[Jacques ROPERS]

Hello,

I have an issue with tikzdevice when using accented characters which is
illustrated in the script below. This UTF8 encoded script runs correctly
using
> Sweave('minimal.rnw', encoding="UTF-8")
and the result can be compiled with XeLaTeX. However, when I replace "e" by
"é" in plot(rnorm(10,1,1), main ="e"), then I get the following error
message from R :

In getMetricsFromLatex(TeXMetrics) :
XeLaTeX was unable to calculate metrics for some characters:
Missing character: There is no � in font ec-lmbx10!

Am I doing something incorrectly ?

Thanks for your help and for this nice package.
Regards,
Jacques

##########################

\documentclass{article}
\usepackage{Sweave}

\usepackage{fontspec}
\usepackage{tikz}

\begin{document}
éàè %these accents are displayed correctly

<<label = debut, echo=FALSE, results=hide >>=
options(tikzMetricsDictionary = "metrics")
options(tikzLatex = "xelatex.exe")
options(tikzDefaultEngine = "xetex")
options(tikzDocumentDeclaration = "\\documentclass{article}")
options( tikzLatexPackages = c(
"\\usepackage{fontspec}"
,"\\usepackage{tikz}"
,"\\usepackage{calc}"
,"\\usepackage{color}"
))

require(tikzDevice, quietly=TRUE)
@

<<label = plot, fig=FALSE, echo=FALSE, results=hide>>=
tikz(file="plot.tex", standAlone=FALSE, bareBones=TRUE, width=5, height=6)
plot(rnorm(10,1,1), main ="e") ### Problem here if "é" instead of "e"
dev.off()
@

\begin{tikzpicture}[x=1pt,y=1pt]
\input{plot.tex}
\end{tikzpicture}

\end{document}
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[Charlie Sharpsteen]

Hi Jacques,

Sorry for not responding sooner---I have been busy lately.

Your example works fine for me on OS X and Linux, but fails as you describe
on Windows 7 with R 2.14.0 and tikzDevice 0.6.1. I suspect this may be an R
issue as there are reports of UTF-8 character being sensitive to the locale
on windows:

http://stackoverflow.com/questions/5031630/how-to-source-r-file-saved-using-utf-8-encoding

Also see this post by Brian Ripley:

https://groups.google.com/d/msg/r-help-archive/qLI_O_qNaCc/Zr6iCGgnimoJ

Hope this helps!

-Charlie