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/NumPy 1.17

numpy.ma.MaskedArray.get_fill_value

method

MaskedArray.get_fill_value(self) [source]

The filling value of the masked array is a scalar. When setting, None will set to a default based on the data type.

Examples

>>> for dt in [np.int32, np.int64, np.float64, np.complex128]:
...     np.ma.array([0, 1], dtype=dt).get_fill_value()
...
999999
999999
1e+20
(1e+20+0j)
>>> x = np.ma.array([0, 1.], fill_value=-np.inf)
>>> x.fill_value
-inf
>>> x.fill_value = np.pi
>>> x.fill_value
3.1415926535897931 # may vary

Reset to default:

>>> x.fill_value = None
>>> x.fill_value
1e+20

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