Hi,
Mike Fitzgerald reported bug #2832896 and has been investigating its
causes:
https://sourceforge.net/tracker/?func=detail&aid=2832896&group_id=80706&atid=560720
The problem is that images are not drawn at exactly the same coordinates
as other artists, so markers drawn on top of images are sl
I think I agree that the rounding is necessary for raster backends, but
is in the wrong place -- it should be in the backend itself.
It's needed for Agg to prevent "gaps" between the image and axes
rectangle. The axes rectangle is always drawn pixel-aligned using
"round", so if the image is dr
