pdf greek letter typos

Hi there,

yet on the topic of greek letters and pdf plotting: when I run the
following code

pdf(file="temp.pdf")
mu=seq(from=-pi, to=pi, length=100)
plot(mu, sin(mu^2),
     type="l",
     xlab=expression(mu%in%(list(-pi,pi))),
     ylab=expression(sin(mu^2)),
     main=expression((list(mu,sin(mu^2)))))
dev.off()

I get a "proportional to" symbol in place of a "mu" and a "not equal
to" in place of a "pi" (see attached file). If I run only

In my PDF viewer (okular, debian LINUX) the file looks ok. This may
very well be a problem with your pdf viewer. E.g. at work, we are
running fedora and there I have experienced a number of problems like
yours caused by a problem with font substitution in some version of
the poppler library which is uses by many LINUX PDF viewers. Try to
view the file in acrobat reader and possibly other viewers. Also: the
files I had issues with printed correctly.

cu
	Philipp

Dr. Philipp Pagel
Lehrstuhl f?r Genomorientierte Bioinformatik
Technische Universit?t M?nchen
Wissenschaftszentrum Weihenstephan
Maximus-von-Imhof-Forum 3
85354 Freising, Germany
http://webclu.bio.wzw.tum.de/~pagel/