Using jpeg() function over cgi

Yes, it has been solved and discussed in the R-help archives many times.
The help(jpeg) page is pretty explicit too.  One alternative is bitmap().

To use jpeg() under a Unix-alike you need to set up an X server that your
R process can use.  It's a bit hard to help you do that when you don't
even mention your OS (I am inferring it is a Unix-alike), but you may be
able to solve the permissions problem or you may be able to set by a
server by something like Xvfb.  In any case, it is not an R problem

I have seen a few posts to this list regarding problems accessing the
x11() device over cgi - namely, when trying to create a graphic using

No, not the x11() device, but the jpeg() device.  They are not the same!

the jpeg() function, everything is fine from the command line but it
won't work over cgi, producing the error:

"Unable to open connection to X11 display"

Has anyone actually solved this particular problem satisfactorily?

Please reply direct to me as I am not a member of the list (yet!)

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595