[O] [Babel][R] Non-ascii characters in R plots

[Christian Moe]

Hi,

When I the following example source block in Org I get a plot in which 
the non-ascii characters are replaced by double dots (namely, the 
degree sign in `degrees C' and the `Å' in `År', Norwegian for `Year').

#+begin_src R :results graphics :file 
~/Desktop/testplot-with-Babel.png :width 480 :height 360
  temp <- c(15, 17, 16, 19, 17, 18)
  year <- c(2000:2005)
  plot(year, temp, xlab="År", ylab="°C")
#+end_src

It seems to be a Babel problem, since, R is working fine; the special 
characters are preserved when I run the same script from the R command 
line.

Compare the attached testplot-with-Babel.png and testplot.png.

I'm running up-to-date Org on GNU Emacs 24.1 compiled for Mac OS 
10.6.8. My .emacs sets current-language-environment to "UTF-8".

Is this a bug, or is there a setting I should know about?

Yours,
Christian
<<attachment: testplot.png>><<attachment: testplot-with-Babel.png>>