- identity
The identity array is a square array with ones on the main diagonal.
np.identity(1)
>>>
array([[1.]])
np.identity(2)
>>>
array([[1., 0.],
[0., 1.]])
np.identity(3)
>>>
array([[1., 0., 0.],
[0., 1., 0.],
[0., 0., 1.]])
np.identity(4)
>>>
array([[1., 0., 0., 0.],
[0., 1., 0., 0.],
[0., 0., 1., 0.],
[0., 0., 0., 1.]])
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