ValueError("Contour levels must be increasing")

[rjsullivan25]

Hi Dan

I've been trying in my hobby time to reproduce the results from Becky Smethurst's STARPY code: https://github.com/rjsmethurst/starpy. I hit an error in the histogram function within triangle.py:

File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/contour.py", line 1233, in _contour_level_args
raise ValueError("Contour levels must be increasing")

It appears the V array is the problem. The issue disappears if I replace triangle.py with corner.py. I'm curious, presumably triangle used to work with an older version matplotlib?

Thanks

Rob