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Possibly leaking figures when making salt frames. #73

Open johntyree opened 8 years ago

johntyree commented 8 years ago

We create these in ThreddsFrameSource.salt_frame(). It looks like we're cleaning up, but this warning still appears.

/home/john/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/matplotlib/pyplot.py:424: RuntimeWarning: More than 20 figures have been opened. Figures create
d through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see th
e rcParam `figure.max_open_warning`).