I have been testing the latest svn matplotlib, which failed to produce
any visible data in some long-standing scripts of mine.
Investigating further, my use of markersize=0.5 combined with the '.'
symbol and the Agg backend caused a complete disappearance of the
markers. I'm attaching example images from 0.93.3 and the most recent
SVN using the attached script.
I'd be happy to track this down, but I think this might be a no-brainer
for someone on the list.
mpl_markersize.py (745 Bytes)