On Mon, Dec 15, 2008 at 2:21 PM, Jouni K. Seppänen <j...@iki.fi> wrote: > "John Hunter" <jdh2...@gmail.com> writes: > >>> I'll take a closer look at this later. >> >> Thanks for looking into this Jouni -- please make sure to fix in the >> branch and merge to the trunk, as described in >> http://matplotlib.sourceforge.net/devel/coding_guide.html#using-svnmerge > > I have a patch (attached) that fixes this case but breaks figimage. It > seems to me that the bug is in figimage, but with the current pdf > backend (which forces dpi=72 for all images) it happens to work right. > I'm a little wary of making this change on the maintenance branch > without also fixing figimage, and I don't really know how to fix > figimage. > > The bug in the pdf backend is that it forces dpi=72, because in PDF 1.4 > there are always 72 points to an inch. (In some later versions the scale > can be changed, but never mind that for now.) This is a problem because > sometimes people want to have their figures at a higher resolution. The > attached patch adds an image_dpi variable to the pdf backend and uses it > like the ps backend does: get_image_magnification() returns > image_dpi/72.0, and the width and height of images are divided by this > magnification factor.
I am not sure what figimage should mean for a vector backend so I want to hear from Perry who motivated the function. When I implemented it on his original request, I understood it to be a raw pixel dump to the canvas with no scaling, no interpolation, etc.... What does a pixel dump to a canvas mean for a vector backend? I think we could define something that was at least consistent, but we should probably hear from Perry et al who are presumably using the function. JDH ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
