On Wed, Sep 29, 2010 at 8:50 AM, Alexander DietzWhy do you say it's wrong? Note that in mpl, (0,0) is (bottom left),
> print ax.transData.transform((10.0, 20.0))
> [ 576. 432.]
not (upper,left). So this is saying that the yellow dot at 10,20
(data coords) is 576 pixels up from the bottom and 432 pixels over
from the left.