I think Jae-Joon's assesment is correct, since the logical dpi in PS is hardcoded to 72.0. I have made this change in the SVN repository.
Mike Thomas Robitaille wrote: > Thanks for your quick reply! > > I'll be patient and wait for the fix to be made in the SVN repository, > rather than trying to patch it myself. Do I need to add any > information to the bug report? > > Best, > > Thomas > > On Apr 21, 2009, at 1:06 PM, Jae-Joon Lee wrote: > > >> I can reproduce this bug with the current svn. >> >> It works correctly If you set dpi=72, but it seems that it would not >> be an option in your case. >> >> It seems to me that this is related with the change in r6847 that >> Michael made. >> >> http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/matplotlib/lib/matplotlib/backends/backend_ps.py?r1=6734&r2=6847 >> >> At line 431 of the backend_ps.py, >> >> clip = (0.0, 0.0, self.width * self.imagedpi, >> self.height * self.imagedpi) >> >> I think we should use the dpi of the figure, instead of the imagedpi >> of the renderer. >> Replacing self.imagedpi with 72 (which is the dpi of the figure when >> ps backend is used) seems to solve the problem. >> >> Thomas, I don't see any easy workaround for this bug other than >> patching the code. Others may have better insight though. >> >> Regards, >> >> -JJ >> >> >> >> On Tue, Apr 21, 2009 at 9:59 AM, Thomas Robitaille >> <thomas.robitai...@gmail.com> wrote: >> >>> Hi, >>> >>> I've come across a bug with the savefig method when using the dpi= >>> argument and saving an EPS file. If you try the following code, you >>> will see that the frame is incomplete. Is there a way to solve this >>> from a user point of view? >>> >>> --- >>> >>> import matplotlib >>> matplotlib.use('Agg') >>> from matplotlib.pyplot import * >>> >>> import numpy as np >>> >>> nx,ny = 10,10 >>> >>> image = np.random.random((nx,ny)) >>> >>> fig = figure(figsize=(4,4)) >>> ax = fig.add_subplot(111) >>> ax.imshow(image,interpolation='nearest') >>> fig.savefig('plot.eps',dpi=30) >>> >>> --- >>> >>> I've submitted a bug report: >>> >>> https://sourceforge.net/tracker/?func=detail&aid=2777476&group_id=80706&atid=560720 >>> >>> Thanks, >>> >>> Thomas >>> >>> ------------------------------------------------------------------------------ >>> Stay on top of everything new and different, both inside and >>> around Java (TM) technology - register by April 22, and save >>> $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. >>> 300 plus technical and hands-on sessions. Register today. >>> Use priority code J9JMT32. http://p.sf.net/sfu/p >>> _______________________________________________ >>> Matplotlib-users mailing list >>> Matplotlib-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >>> >>> > > > ------------------------------------------------------------------------------ > Stay on top of everything new and different, both inside and > around Java (TM) technology - register by April 22, and save > $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. > 300 plus technical and hands-on sessions. Register today. > Use priority code J9JMT32. http://p.sf.net/sfu/p > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
