This is causing so much fuss, I'm starting to feel bad about asking the question. I'll reply in the "uniqueness" thread about the (r,th) coordinate system from a mathematical perspective.
From a matplotlib.pyplot user perspective, however, I think that if it is going to misbehave with negative values of r under certain circumstances (rgrids() in this case) then it should produce a noisy warning as soon as it sees them in *all* circumstances. So my version2.py and version3.py should both produce warnings. Any how, the answer seems to be "yes I'm using rgrids() correctly, but no I'm not using matplotlib-friendly data points". I shall adjust my values of (r,th). Thank you for all your feedback. ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
