numpy.ma.array(data, dtype=None, copy=False, order=None, mask=False, fill_value=None, keep_mask=True, hard_mask=False, shrink=True, subok=True, ndmin=0)

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

numpy.ma.polyfit(x, y, deg, rcond=None, full=False, w=None, cov=False)

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

numpy.ma.masked_where(condition, a, copy=True)

numpy.ma.masked_not_equal(x, value, copy=True)

numpy.ma.maximum_fill_value(obj)

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

numpy.ma.allequal(a, b, fill_value=True)

numpy.ma.empty_like(a, dtype=None, order='K', subok=True) = Return a new array with the same shape and type as a given array