numpy.matlib.identity¶

numpy.matlib.identity(n,dtype=None)[source]¶

Returns the square identity matrix of given size.

Parameters:	n : int Size of the returned identity matrix. dtype : data-type, optional Data-type of the output. Defaults tofloat.
Returns:	out : matrix n xn matrix with its main diagonal set to one,and all other elements zero.

See also

numpy.identity

Equivalent array function.

matlib.eye

More general matrix identity function.

Examples

>>>importnumpy.matlib>>>np.matlib.identity(3,dtype=int)matrix([[1, 0, 0],        [0, 1, 0],        [0, 0, 1]])