numpy.matlib.identity

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

Returns the square identity matrix of given size.

Parameters:

nint

Size of the returned identity matrix.

dtypedata-type, optional

Data-type of the output. Defaults to float.

Returns:

outmatrix

n x n 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

Try it in your browser!

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

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