SciPy

This is documentation for an old release of NumPy (version 1.8.0). Read this page in the documentation of the latest stable release (version > 1.17).

numpy.matrix.mean

matrix.mean(axis=None, dtype=None, out=None)[source]

Returns the average of the matrix elements along the given axis.

Refer to numpy.mean for full documentation.

See also

numpy.mean

Notes

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

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.mean()
5.5
>>> x.mean(0)
matrix([[ 4.,  5.,  6.,  7.]])
>>> x.mean(1)
matrix([[ 1.5],
        [ 5.5],
        [ 9.5]])

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