The pie wedges are approximated using a 72-sided polygon (each side 5 degrees), rather than a true ellipse. There is a bug that if the wedge is smaller than a half of a side of this polygon (2.5 degrees) it creates only one side of the wedge.
This has been fixed on the 0.91.x maintenance branch in SVN r4882. The SVN trunk uses a completely different approach using bezier curves, so doesn't exhibit this problem. Cheers, Mike James Battat wrote: > It looks like pie() omits slices that are smaller than a few percent. > > In the following example, only one pie slice is drawn: > >>>> import pylab >>>> pylab.pie([98,2]) >>>> pylab.show() > > The missing pie slice has neither a color fill nor a boundary (the > arc of the pie slice is missing). > > By contrast, the following works as expected: >>>> pylab.pie([97,3]) > > It seems that the problem occurs for small slices, apparently the > threshold is around 2-3%. > > Any ideas? > > Thanks in advance, > James > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > 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 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
