numpy.asmatrix¶

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

Interpret the input as a matrix.

Unlikematrix,asmatrix does not make a copy if the input is alreadya matrix or an ndarray. Equivalent tomatrix(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

>>>mmatrix([[5, 2],        [3, 4]])