I normalized the data (see earlier post). Readable? Got suggestions on how to improve?
I ditched rgplot and instead used Gruff (wraps RMagick which wraps ImageMagick). Installation is pretty straightforward. However, I faced a problem with installing ghostscript on my OS X box. Something in the portfile is broken or something. Anyway, you might need to comment the following lines in the ghostscript portfile (typically something like /opt/local/var/db/dports/sources/rsync.r):
[...] debc62758716a169df9f62e6ab2bc634 aj16.tar.Z md5 b24ac1b6966adf3a92edaae42eda662c ag14.tar.Z md5 f9cad1b32e56f65339da26266f568e97 ac15.tar.Z md5 a9d876f28dde1d4a0a6571eb0e281761 ak12.tar.Z md5 [...] default_variants +aj16 +ag14 +ac15 +ak12

