Module « scipy.sparse »

Fonction eye - module scipy.sparse

Signature de la fonction eye

def eye(m, n=None, k=0, dtype=<class 'float'>, format=None) 

Description

eye.__doc__

Sparse matrix with ones on diagonal

    Returns a sparse (m x n) matrix where the kth diagonal
    is all ones and everything else is zeros.

    Parameters
    ----------
    m : int
        Number of rows in the matrix.
    n : int, optional
        Number of columns. Default: `m`.
    k : int, optional
        Diagonal to place ones on. Default: 0 (main diagonal).
    dtype : dtype, optional
        Data type of the matrix.
    format : str, optional
        Sparse format of the result, e.g., format="csr", etc.

    Examples
    --------
    >>> from scipy import sparse
    >>> sparse.eye(3).toarray()
    array([[ 1.,  0.,  0.],
           [ 0.,  1.,  0.],
           [ 0.,  0.,  1.]])
    >>> sparse.eye(3, dtype=np.int8)
    <3x3 sparse matrix of type '<class 'numpy.int8'>'
        with 3 stored elements (1 diagonals) in DIAgonal format>