Using the agg backend you can obtain an RGBA buffer or RGB
>> string which can then be loaded as a PIL Image for processing.
>> I've adapted a the examples/agg_oo.py to demonstrate.
> Thanks a lot, Nicolas! Excellent... no more temp file! It
> took me some time to figure out how to get the PNG image
> data from PIL, but it worked out quite well.
Could you post a complete example so that others won't have to spend
that extra time figuring out how to put all the pieces together?