method
Indexes of the maximum values along an axis.
Return the indexes of the first occurrences of the maximum values along the specified axis. If axis is None, the index is for the flattened matrix.
Notes
This is the same as ndarray.argmax
, but returns a matrix
object where ndarray.argmax
would return an ndarray
.
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.argmax() 11 >>> x.argmax(0) matrix([[2, 2, 2, 2]]) >>> x.argmax(1) matrix([[3], [3], [3]])
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