Is this potentially a path.simplify issue? If you set path.simplify

to False in your rc params, does the problem go away?

import matplotlib

matplotlib.rcParams['path.simplify'] = False

In older versions of matplotlib, there was a bug in path.simplify that

caused it to simplify paths to the point where it caused perceptual

problems. The current path.simplify is not supposed to produce

detectable changes, so as Michael said please include your mpl version

in your response.

JDH

## ···

On Thu, Apr 21, 2011 at 11:22 AM, Michael Droettboom <mdroe@...86...> wrote:

There is no hard coded limit to the number of quads in a pcolormesh.

(Unlike the limit of the number of points in a path in the Agg backend).

Can you provide some code that reproduces the error?

Also, which version of matplotlib, platform and backend are you using?