Hexagonal binning for scatter plots

Hi everybody,

Is there a function in matplotlib for hexagonal binning of scatter plots? Here are some examples of what I am looking for:

http://faculty.washington.edu/tlumley/survey/greyhexbin.png

http://www.spss.com/research/wilkinson/nViZn/hexbin.gif

http://addictedtor.free.fr/graphiques/75x75/tn_139.png

Thanks!

–Michiel.

between 0000-00-00 and 9999-99-99