I've written a script to roughly emulate the elegant streamline plots found in
Mathematica. The code is available at
http://www.atm.damtp.cam.ac.uk/people/tjf37/streamplot.py and example plots at
streamlines2.png. It's a pretty hacky script, but fast and fairly robust. If
anyone finds this script useful and has comments/suggestions, I'm happy to do a
bit more work.
It would also be helpful if anyone has suggestions on a particular issue I had.
Currently, to plot variable-width lines (i.e. streamlines2.png) I use a plot
command for each line segment which is very slow and nasty. Is there a better
way I'm missing?