Module « scipy.linalg »

Fonction hadamard - module scipy.linalg

Signature de la fonction hadamard

def hadamard(n, dtype=<class 'int'>) 

Description

hadamard.__doc__

    Construct an Hadamard matrix.

    Constructs an n-by-n Hadamard matrix, using Sylvester's
    construction. `n` must be a power of 2.

    Parameters
    ----------
    n : int
        The order of the matrix. `n` must be a power of 2.
    dtype : dtype, optional
        The data type of the array to be constructed.

    Returns
    -------
    H : (n, n) ndarray
        The Hadamard matrix.

    Notes
    -----
    .. versionadded:: 0.8.0

    Examples
    --------
    >>> from scipy.linalg import hadamard
    >>> hadamard(2, dtype=complex)
    array([[ 1.+0.j,  1.+0.j],
           [ 1.+0.j, -1.-0.j]])
    >>> hadamard(4)
    array([[ 1,  1,  1,  1],
           [ 1, -1,  1, -1],
           [ 1,  1, -1, -1],
           [ 1, -1, -1,  1]])