BUG: fix ma.minimum.reduce with axis keyword #21993
Merged
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Fixes the problem reported at #21977 (comment).
The
reduce
method here effectively calls itself with an unmaskedMaskedArray
(mask=nomask) and then expects either aMaskedArray
or a scalar. This change ensures that an ordinaryndarray
is converted to aMaskedArray
, following the pattern already used inmean
andvar
in this module.When
t
was anndarray
, we calledelif m
on a boolean array, triggering the "ambiguous truth value" error.numpy/numpy/ma/core.py
Lines 6883 to 6886 in bdec321