On Mon, Oct 29, 2012 at 11:25 AM, Nicolas Rougier <Nicolas.Rougier@inria.fr> wrote:

Thanks for testing.

If I zoom at any line cross, the lines are definitely at the wrong place for me.
As for screen aliasing I'm not sure since both the png and pdf seems to be wrong in my case.
Weird !

Which version of matplotlib are you using, just for reference.

Ben Root