Module « numpy.matlib »

Fonction identity - module numpy.matlib

Signature de la fonction identity

def identity(n, dtype=None) 

Description

identity.__doc__

    Returns the square identity matrix of given size.

    Parameters
    ----------
    n : int
        Size of the returned identity matrix.
    dtype : data-type, optional
        Data-type of the output. Defaults to ``float``.

    Returns
    -------
    out : matrix
        `n` x `n` matrix with its main diagonal set to one,
        and all other elements zero.

    See Also
    --------
    numpy.identity : Equivalent array function.
    matlib.eye : More general matrix identity function.

    Examples
    --------
    >>> import numpy.matlib
    >>> np.matlib.identity(3, dtype=int)
    matrix([[1, 0, 0],
            [0, 1, 0],
            [0, 0, 1]])