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numpy.ma.masked_equal

numpy.ma.masked_equal(x, value, copy=True) [source]

Mask an array where equal to a given value.

This function is a shortcut to masked_where, with condition = (x == value). For floating point arrays, consider using masked_values(x, value).

See also

masked_where
Mask where a condition is met.
masked_values
Mask using floating point equality.

Examples

>>> import numpy.ma as ma
>>> a = np.arange(4)
>>> a
array([0, 1, 2, 3])
>>> ma.masked_equal(a, 2)
masked_array(data=[0, 1, --, 3],
             mask=[False, False,  True, False],
       fill_value=2)

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https://docs.scipy.org/doc/numpy-1.17.0/reference/generated/numpy.ma.masked_equal.html