This is documentation for an old release of NumPy (version 1.6.0). Read this page Search for this page in the documentation of the latest stable release (version > 1.17).

numpy.ma.MaskedArray.__setitem__

MaskedArray.__setitem__(indx, value)

x.__setitem__(i, y) <==> x[i]=y

Set item described by index. If value is masked, masks those locations.