I have been doing some testing with pcolor() and pcolormesh() with regards
to rasterization. I can not see a displacement when choosing between
different file types or with setting rasterized to be True or False. What I
have noticed is a half grid-space displacement between pcolor() and
pcolormesh().
You can see if this is the cause of your displacement by choosing a higher
resolution grid. In such a case, the displacement should be smaller.
Ben Root
On Fri, May 21, 2010 at 5:03 AM, Markus Haider <markus.hai...@uibk.ac.at>wrote:
> Hello,
>
> I make colormap plots in matplotlib using pcolor or pcolormesh. With
> both I have a problem:
>
> If I use pcolormesh ("p2 = ax2.pcolormesh(10**temp,rasterized=True)") I
> get perfectly small file sizes, but the position of the rasterized
> colormap is a little bit displaced with respect to the frame, showing a
> white border on the top and right side. Is this a bug, or can I change
> this?
>
> If I try with pcolor, I get the
> message/usr/lib/pymodules/python2.6/matplotlib/artist.py:562:
> UserWarning: Rasterization of '<matplotlib.collections.PolyCollection
> object at 0x2aac890>' will be ignored
> warnings.warn("Rasterization of '%s' will be ignored" % self)
>
>
> Thank you very much for your help,
> Markus
>
>
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