method
matrix.std(axis=None, dtype=None, out=None, ddof=0)
Return the standard deviation of the array elements along the given axis.
Refer to
for full documentation.
Notes
This is the same as
, except that where an
would be returned, a
object is returned instead.
Examples
>>> x=np.matrix(np.arange(12).reshape((3,4)))>>> xmatrix([[ 0, 1, 2, 3], [ 4, 5, 6, 7], [ 8, 9, 10, 11]])>>> x.std()3.4520525295346629 # may vary>>> x.std(0)matrix([[ 3.26598632, 3.26598632, 3.26598632, 3.26598632]]) # may vary>>> x.std(1)matrix([[ 1.11803399], [ 1.11803399], [ 1.11803399]])