Hi, all--

I'm seeing a glitch in the matplotlib countor function, as employed by annotate_clumps.  As is, I'm seeing some clumps that are not plotted by the countour plotter unless I bump the number of contours-- I get all the plots if I change the contour line to:

self.rv = plot._axes.contour(buff, len(self.clumps)+5,

instead of 

self.rv = plot._axes.contour(buff, len(self.clumps)+1,

Is this a glitch that anyone is aware of?  Is there a more general fix?  The clump contour is not the only time I've run into this glitch. It seems to happen on large contours, for what that's worth.