degree symbol using X11 on Xubuntu 10.04

Dear all,

I am having exactly the same problem as Andy on an Intel Mac (see below
/ https://stat.ethz.ch/pipermail/r-sig-mac/2009-May/006208.html) with
the degree symbol. I am using R version 2.11.1 (2010-05-31) on Xubuntu
10.04 with Windows fonts copied from /WINDOWS/Fonts and included via
'sudo dpkg-reconfigure fontconfig' and 'sudo fc-cache'.

Any help would be highly appreciated, Christian

I can confirm this bug but I can also confirm it works properly.  I ran 
this code:

plot(rnorm(100),main=expression(sum(x[i], i=1, n)))
pdf("test.pdf")
plot(rnorm(100),main=expression(sum(x[i], i=1, n)))
dev.off()
postscript("test.ps")
plot(rnorm(100),main=expression(sum(x[i], i=1, n)))
dev.off()

The postscript version worked on all three systems.  On 32-bit Lucid 
(10.04), all worked.  On both 32-bit and 64-bit Maverick (10.10), the 
summation is returned as a dot.

Working on finding a solution.

Michael

Dr. Michael A. Rutter
School of Science
Penn State Erie, The Behrend College
Station Road
Erie, PA 16563
http://math.bd.psu.edu/faculty/rutter