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numpy.ma.common_fill_value

numpy.ma.common_fill_value(a, b) [source]

Return the common filling value of two masked arrays, if any.

If a.fill_value == b.fill_value, return the fill value, otherwise return None.

Parameters:
a, b : MaskedArray

The masked arrays for which to compare fill values.

Returns:
fill_value : scalar or None

The common fill value, or None.

Examples

>>> x = np.ma.array([0, 1.], fill_value=3)
>>> y = np.ma.array([0, 1.], fill_value=3)
>>> np.ma.common_fill_value(x, y)
3.0

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