record.size number of elements in the gentype

numpy.ma.fix_invalid(a, mask=False, copy=True, fill_value=None)

numpy.ma.is_masked(x)

numpy.ma.swapaxes(self, *args, **params) a.swapaxes(axis1, axis2) = Return a view of the array with axis1 and axis2

matrix.ravel(order='C')

ndarray.var(axis=None, dtype=None, out=None, ddof=0, keepdims=False) Returns the variance of the array elements, along given

MaskedArray.__repr__()

MaskedArray.__rmul__(other)

MaskedArray.__radd__(other)

MaskedArray.__array_priority__ = 15