recarray.cumsum(axis=None, dtype=None, out=None) Return the cumulative sum of the elements along the given axis. Refer

matrix.view(dtype=None, type=None) New view of array with the same data.

matrix.I Returns the (multiplicative) inverse of invertible self.

record.copy() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and possesses

recarray.real The real part of the array. See also

recarray.view(dtype=None, type=None) New view of array with the same data.

record.ravel() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and possesses

recarray.resize(new_shape, refcheck=True) Change shape and size of array in-place.

record.nonzero() Not implemented (virtual attribute) Class generic exists solely to derive numpy scalars from, and

matrix.argmax(axis=None, out=None)