matplotlib/matplotlib — pull request #805 by piti118 (2012-03-28 21:26:05+00:00)
Title: Add hist2d plotting function

This seems to be missing from matplotlib. While fancy hexbin exists, a simple rectangular bin histogram isn't there.

http://stackoverflow.com/questions/2030970/python-matplotlib-rectangular-binning
and also
https://github.com/matplotlib/matplotlib/issues/668