Module « scipy.sparse »

Fonction kron - module scipy.sparse

Signature de la fonction kron

def kron(A, B, format=None) 

Description

kron.__doc__

kronecker product of sparse matrices A and B

    Parameters
    ----------
    A : sparse or dense matrix
        first matrix of the product
    B : sparse or dense matrix
        second matrix of the product
    format : str, optional
        format of the result (e.g. "csr")

    Returns
    -------
    kronecker product in a sparse matrix format


    Examples
    --------
    >>> from scipy import sparse
    >>> A = sparse.csr_matrix(np.array([[0, 2], [5, 0]]))
    >>> B = sparse.csr_matrix(np.array([[1, 2], [3, 4]]))
    >>> sparse.kron(A, B).toarray()
    array([[ 0,  0,  2,  4],
           [ 0,  0,  6,  8],
           [ 5, 10,  0,  0],
           [15, 20,  0,  0]])

    >>> sparse.kron(A, [[1, 2], [3, 4]]).toarray()
    array([[ 0,  0,  2,  4],
           [ 0,  0,  6,  8],
           [ 5, 10,  0,  0],
           [15, 20,  0,  0]])