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:
data : array_like Input data. dtype : data-type Data-type of the output matrix. Returns:
mat : matrix data interpreted as a matrix. Examples >>> x = np.array([[1, 2], [3, 4]])
>>> m = np.asmatrix(x)
>>> x[0,0] = 5
>>> m
matrix