Hi Jae-Joon,
On Sun, Mar 22, 2009 at 8:55 PM, Jae-Joon Lee <lee.j.j...@gmail.com> wrote:
> Hi Eric,
>
> Have you find a solution for your problem?
> I recently encountered a similar problem.
> In my case, the images (I'm rasterizing the pcolormesh) are in wrong
> size if the output dpi is other than 72.
> And I guess this is related with the changes Jouni made in revision 6730.
>
> So, can you see if you have a correct output with dpi=72?
> If that's the case, can you try the attached patch and see if it
> solves your problem (should work with dpi other than 72).
I hadn't found a solution (other than rendering to svg), so thanks for
waking up this thread. I can confirm that I get the correct output
when I set dpi=72.
> I don't quite like my solution but it seems to work.
> It passes over the figure instance when initializing the
> MixedRenderer, and let the renderer change the dpi of the figure when
> changing the backend.
> I hope some other developer who better understands the dpi thing take
> a look and come up with a better solution.
I'll try to take a look at this later this afternoon. I agree that
someone with more knowledge should take a look. The SVG backend seems
to just ignore the dpi setting and forces 72 dpi across the board,
which is why I was able to use it as a workaround.
Thanks,
Eric
>
> Regards,
>
> -JJ
>
>
> On Thu, Feb 19, 2009 at 4:01 PM, Eric Bruning <eric.brun...@gmail.com> wrote:
>> I just updated to the latest svn, and unveiled a bug that's evident
>> when using mixed-mode rendering in the PDF backend. I'm suspect I'm
>> the only one running my patch that enables set_rasterized on a
>> per-artist basis, so I'm the only one that's seeing it. :) Artists
>> that are left in vector mode are plotted correctly, while artists that
>> are rasterized are squished down toward the lower left corner of the
>> axes.
>>
>> Looking at the svn log, I suspect it's the changes to the path
>> simplification code (r6847) doing something funky at the transforms
>> level. Is that the right place to start looking? Any tips on how to
>> track this down?
>>
>> Thanks,
>> Eric
>>
>>
>> Sample code to reproduce the problem:
>>
>> import numpy
>> from matplotlib.pyplot import subplot, get_cmap, scatter, colorbar, show
>> basecolors = get_cmap('gist_yarg')
>> colormap, normer = basecolors, None #LogNorm()
>> x = y = c = numpy.arange(10) +1
>> dummy = scatter(x,y,c=c,cmap=colormap)#, norm=normer)
>> cbar = colorbar(dummy)#, spacing='proportional',ticks=isolevels.levels)
>> dummy.set_rasterized(True)
>> dummy.figure.savefig('raster_test.pdf')
>>
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