[Numpy-discussion] histogram2d error with empty inputs
Benjamin Root
ben.root at ou.edu
Mon Jun 27 15:38:59 EDT 2011
I found another empty input edge case. Somewhat recently, we fixed an issue
with np.histogram() and empty inputs (so long as the bins are somehow
known).
>>> np.histogram([], bins=4)
(array([0, 0, 0, 0]), array([ 0. , 0.25, 0.5 , 0.75, 1. ]))
However, histogram2d needs the same treatment.
>>> np.histogram([], [], bins=4)
(array([ 0., 0.]), array([ 0. , 0.25, 0.5 , 0.75, 1. ]), array([ 0.
, 0.25, 0.5 , 0.75, 1. ]))
The first element in the return tuple needs to be 4x4 (in this case).
Thanks,
Ben Root
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