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scipy.spatial.KDTree.query_pairs

KDTree.query_pairs(r, p=2.0, eps=0)

Find all pairs of points whose distance is at most r

Parameters :

r : positive float

The maximum distance

p : float 1<=p<=infinity

Which Minkowski norm to use

eps : nonnegative float

Approximate search. Branches of the tree are not explored if their nearest points are further than r/(1+eps), and branches are added in bulk if their furthest points are nearer than r*(1+eps).

Returns :

results : set

set of pairs (i,j), i<j, for which the corresponing positions are close.