numpy.ma.copy(self, *args, **params) a.copy(order='C') = Return a copy of the array.

numpy.ma.arange([start, ]stop, [step, ]dtype=None) = Return evenly spaced values within a given interval. Values are generated

numpy.ma.getmask(a)

numpy.ma.make_mask_descr(ndtype)

numpy.ma.clump_masked(a)

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

numpy.ma.mean(self, axis=None, dtype=None, out=None) = Returns the average of the array elements. Masked entries are ignored

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

numpy.ma.is_mask(m)

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