numpy.ma.masked_array.harden_mask

method

ma.masked_array.harden_mask()

Force the mask to hard, preventing unmasking by assignment.

Whether the mask of a masked array is hard or soft is determined by its hardmask property. harden_mask sets hardmask to True (and returns the modified self).

也參考

ma.MaskedArray.hardmask

ma.MaskedArray.soften_mask