Module « scipy.spatial »

Fonction distance_matrix - module scipy.spatial

Signature de la fonction distance_matrix

def distance_matrix(x, y, p=2, threshold=1000000) 

Description

distance_matrix.__doc__

Compute the distance matrix.

    Returns the matrix of all pair-wise distances.

    Parameters
    ----------
    x : (M, K) array_like
        Matrix of M vectors in K dimensions.
    y : (N, K) array_like
        Matrix of N vectors in K dimensions.
    p : float, 1 <= p <= infinity
        Which Minkowski p-norm to use.
    threshold : positive int
        If ``M * N * K`` > `threshold`, algorithm uses a Python loop instead
        of large temporary arrays.

    Returns
    -------
    result : (M, N) ndarray
        Matrix containing the distance from every vector in `x` to every vector
        in `y`.

    Examples
    --------
    >>> from scipy.spatial import distance_matrix
    >>> distance_matrix([[0,0],[0,1]], [[1,0],[1,1]])
    array([[ 1.        ,  1.41421356],
           [ 1.41421356,  1.        ]])