numpy.ma.allclose(a, b, masked_equal=True, rtol=1e-05, atol=1e-08)

numpy.ma.make_mask_none(newshape, dtype=None)

numpy.ma.fromfunction(function, shape, **kwargs) = Construct an array by executing a function over each coordinate.

numpy.ma.sort(a, axis=-1, kind='quicksort', order=None, endwith=True, fill_value=None)

MaskedArray.recordmask Return the mask of the records. A record is masked when all the fields are masked

numpy.ma.default_fill_value(obj)

numpy.ma.masked_array

MaskedArray.max(axis=None, out=None, fill_value=None)

MaskedArray.torecords()

numpy.ma.mask_or(m1, m2, copy=False, shrink=True)