matplotlib Code

Replace axes when current one is of the wrong projection type. This lets "subplot(111); polar()" work.

suppress gcc-4.3 warnings

Begin and end docstrings on newlines.

Fix axhline etc. with non-linear scales.

Add information to docstring for pyplot.subplot()

improved checks for external dependencies

Pass qt* enter and leave events to FigureCanvasBase

Minor formatting changes.

added gregor's wx enter/leave patch - fixed figure_enter problem

Be more conservative about chunking large paths -- filled paths shouldn't be chunked -- or at least would require a more complex algorithm.