numpy.ma.notmasked_edges()
numpy.ma.notmasked_edges
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numpy.ma.notmasked_edges(a, axis=None)[source] -
Find the indices of the first and last unmasked values along an axis.
If all values are masked, return None. Otherwise, return a list of two tuples, corresponding to the indices of the first and last unmasked values respectively.
Parameters: a : array_like
The input array.
axis : int, optional
Axis along which to perform the operat