braycurtis — SciPy v1.15.3 Manual (original) (raw)

scipy.spatial.distance.

scipy.spatial.distance.braycurtis(u, v, w=None)[source]#

Compute the Bray-Curtis distance between two 1-D arrays.

Bray-Curtis distance is defined as

\[\sum{|u_i-v_i|} / \sum{|u_i+v_i|}\]

The Bray-Curtis distance is in the range [0, 1] if all coordinates are positive, and is undefined if the inputs are of length zero.

Parameters:

u(N,) array_like

Input array.

v(N,) array_like

Input array.

w(N,) array_like, optional

The weights for each value in u and v. Default is None, which gives each value a weight of 1.0

Returns:

braycurtisdouble

The Bray-Curtis distance between 1-D arrays u and v.

Examples

from scipy.spatial import distance distance.braycurtis([1, 0, 0], [0, 1, 0]) 1.0 distance.braycurtis([1, 1, 0], [0, 1, 0]) 0.33333333333333331