Classe « dia_matrix »

Méthode scipy.sparse.dia_matrix.diagonal

Signature de la méthode diagonal

def diagonal(self, k=0) 

Description

diagonal.__doc__

Returns the kth diagonal of the matrix.

        Parameters
        ----------
        k : int, optional
            Which diagonal to get, corresponding to elements a[i, i+k].
            Default: 0 (the main diagonal).

            .. versionadded:: 1.0

        See also
        --------
        numpy.diagonal : Equivalent numpy function.

        Examples
        --------
        >>> from scipy.sparse import csr_matrix
        >>> A = csr_matrix([[1, 2, 0], [0, 0, 3], [4, 0, 5]])
        >>> A.diagonal()
        array([1, 0, 5])
        >>> A.diagonal(k=1)
        array([2, 3])