MaskedArray.all(self, axis=None, out=None, keepdims=<no value>)
Returns True if all elements evaluate to True.
The output array is masked where all the values along the given axis are masked: if the output would have been a scalar and that all the values are masked, then the output is
numpy.all for full documentation.
>>> np.ma.array([1,2,3]).all() True >>> a = np.ma.array([1,2,3], mask=True) >>> (a.all() is np.ma.masked) True
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