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