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

numpy.ma.clump_masked(a)

numpy.ma.mr_ = Translate slice objects to concatenation along the first axis. This is the masked array version of lib

numpy.ma.mask_rowcols(a, axis=None)

numpy.ma.loads(strg)

numpy.ma.common_fill_value(a, b)

numpy.ma.size(obj, axis=None)

MaskedArray.nonzero()

numpy.ma.make_mask(m, copy=False, shrink=True, dtype=)

numpy.ma.append(a, b, axis=None)