numpy.asmatrix#

numpy.asmatrix(data, dtype=None)[source]#

Interpret the input as a matrix.

Unlike matrix, asmatrix does not make a copy if the input is already a matrix or an ndarray. Equivalent to matrix(data, copy=False).

Parameters:

dataarray_like

Input data.

dtypedata-type

Data-type of the output matrix.

Returns:

matmatrix

data interpreted as a matrix.

Examples

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>>> import numpy as np
>>> x = np.array([[1, 2], [3, 4]])

>>> m = np.asmatrix(x)

>>> x[0,0] = 5

>>> m
matrix([[5, 2],
        [3, 4]])

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