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numpy.identity¶

   numpy.identity(n, dtype=None)[source]¶
          Return the identity array.

          The identity array is a square array with ones on the main
          diagonal.

   Parameters:

        n : int
                Number of rows (and columns) in n x n output.

        dtype : data-type, optional
                Data-type of the output. Defaults to float.

   Returns:

        out : ndarray
                n x n array with its main diagonal set to one, and all
                other elements 0.

          Examples

>>> np.identity(3)
array([[1.,  0.,  0.],
       [0.,  1.,  0.],
       [0.,  0.,  1.]])

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