Hi John,
Thank you for your hint.
python arrow_demo.py --verbose-helpful yields
matplotlib data path /usr/lib64/python2.4/site-packages/matplotlib/mpl-data
$HOME=/home/nwagner
CONFIGDIR=/home/nwagner/.matplotlib
loaded rc file /home/nwagner/.matplotlib/matplotlibrc
matplotlib version 0.88svn
verbose.level helpful
interactive is False
platform is linux2
numerix numpy 0.9.7.2264
font search path ['/usr/lib64/python2.4/site-packages/matplotlib/mpl-data']
loaded ttfcache file /home/nwagner/.matplotlib/ttffont.cache
backend GTKAgg version 2.8.0
Traceback (most recent call last):
File "arrow_demo.py", line 307, in ?
make_arrow_plot(d, display=display, linewidth=0.001, edgecolor=None,
NameError: name 'd' is not defined
Nils