MAINT: stats.wilcoxon: fix failure with multidimensional x
with NaN and slice length > 50
#20592
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Reference issue
Closes gh-20591
What does this implement/fix?
This fixes a bug in which under specific conditions (
x.ndim > 1
,x.shape[axis] > 50
,np.isnan(x).any()
,nan_policy='propagate'
, andmethod='auto'
, for instance)wilcoxon
could fail and raise an unexpected error.