Low-level function to find all close triples of points.
Usage
closetriples(X, rmax)
Value
A data frame with columns i,j,k giving the indices of the
points in each triple, and a column diam giving the diameter
(maximum pairwise distance) in the triple.
Arguments
X
Point pattern (object of class "ppp" or "pp3").
rmax
Maximum distance between each pair of points in a triple.