The PDF Spec (version 1.7) has this to say (emphasis mine):
A form XObject is a PDF content stream that is a self-contained description of any sequence of graphics objects (including path objects, text objects, and sampled images). A form XObject may be painted multiple times—either on several pages or at several locations on the same page—and produces the same results each time, /subject only to the graphics state at the time it is invoked/. Not only is this shared definition economical to represent in the PDF file, but under suitable circumstances the PDF consumer application can optimize execution by caching the results of rendering the form XObject for repeated reuse.So --- this would appear to be a bug in Foxit. Perhaps you could submit this problematic PDF to them.
We could fairly easily provide a workaround by not doing this optimization (I've attached a PDF so you can verify that it solves the Foxit issue). But it is an important optimization when there are hundreds of markers in a plot. We could make this user-configurable, but I'm wary of adding more config parameters without really good reasons -- many user issues on this list come down to someone using a particular configuration that a developer neglected to test with.
What do others here think? Cheers, Mike Christopher Brown wrote:
Hi Michael, MD> I can't be of much help with Windows builds, unfortunately. MD> However, for clarification, is this error from building pycairo or MD> matplotlib? matplotlib *should* be able to bypass pkg-config if it MD> isn't available. The error occurred while building pycairo. MD> > will create a figure tonight from home (kubuntu) using the cairo MD> > backend, then examine it tomorrow at work (windows/foxit) and MD> > report back. MD> > MD> Sounds like a good experiment. Thanks for helping out.With a plot made using the cairo backend, the markers render correctly in foxit. I am standing by for further instruction. :)By the way, I'm using mpl from svn.
-- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA
test3.pdf
Description: Adobe PDF document
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