numpy.matrix.prod#

method

matrix.prod(axis=None, dtype=None, out=None)[原始碼]#

Return the product of the array elements over the given axis.

Refer to prod for full documentation.

也參考

prod, ndarray.prod

Notes

Same as ndarray.prod, except, where that returns an ndarray, this returns a matrix object instead.

Examples

>>> x = np.matrix(np.arange(12).reshape((3,4))); x
matrix([[ 0,  1,  2,  3],
        [ 4,  5,  6,  7],
        [ 8,  9, 10, 11]])
>>> x.prod()
0
>>> x.prod(0)
matrix([[  0,  45, 120, 231]])
>>> x.prod(1)
matrix([[   0],
        [ 840],
        [7920]])