numpy.eye(N, M=None, k=0, dtype=<class 'float'>, order='C')
[source]
Return a 2-D array with ones on the diagonal and zeros elsewhere.
Parameters: |
N : int Number of rows in the output. M : int, optional Number of columns in the output. If None, defaults to k : int, optional Index of the diagonal: 0 (the default) refers to the main diagonal, a positive value refers to an upper diagonal, and a negative value to a lower diagonal. dtype : data-type, optional Data-type of the returned array. order : {‘C’, ‘F’}, optional Whether the output should be stored in row-major (C-style) or column-major (Fortran-style) order in memory. New in version 1.14.0. |
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Returns: |
I : ndarray of shape (N,M) An array where all elements are equal to zero, except for the |
See also
>>> np.eye(2, dtype=int) array([[1, 0], [0, 1]]) >>> np.eye(3, k=1) array([[ 0., 1., 0.], [ 0., 0., 1.], [ 0., 0., 0.]])
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https://docs.scipy.org/doc/numpy-1.14.2/reference/generated/numpy.eye.html