[R] pdf() device uses fonts to represent points - data alteration?

[Thomas Petzoldt]

Hello,

I had the same problem. When opening PDFs with a recent developer 
version of inkscape all circles were replaced by the letter "q", see a 
screenshoot of the imported figure:

http://www.simecol.de/figs/R_pdf_inkscape.png

I spent at least two hours trying different development versions of 
inkscape, different versions of R, reading docs, trying different 
machines, installing fonts etc., finally giving up. Now, the two 
workarounds of Paul Murrell indeed solved the problem for *me*. Thank 
you. Here are example results of workarounds (i) and (ii):

http://www.simecol.de/figs/R_ps_pdf_inkscape.png

or

http://www.simecol.de/figs/R_pdftrans_inkscape.png

One problem remains. I wanted to demonstrate post-editing PDFs with 
inkscape to motivate students to use R for graphics even if they dont 
want to "become programmers". However, double conversion (via 
postscript) or the magics of transparency and opaqueness are not yet the 
way to increase the trust of point-and-click users to R. Maybe this is a 
topic for r-devel?

Thomas


-- 
Thomas Petzoldt
Technische Universitaet Dresden
Institut fuer Hydrobiologie
01062 Dresden
GERMANY

http://tu-dresden.de/Members/thomas.petzoldt?set_language=en