| maxnndist {spatstat} | R Documentation |
A faster way to compute the minimum or maximum nearest-neighbour distance in a point pattern.
minnndist(X) maxnndist(X)
X |
A point pattern (object of class |
These functions find the minimum and maximum values
of nearest-neighbour distances in the point pattern X.
minnndist(X) and maxnndist(X) are
equivalent to, but faster than, min(nndist(X))
and max(nndist(X)) respectively.
The value is NA if npoints(X) < 2.
A single numeric value (possibly NA).
Adrian Baddeley Adrian.Baddeley@uwa.edu.au http://www.maths.uwa.edu.au/~adrian/, Rolf Turner and Ege Rubak.
min(nndist(swedishpines))
minnndist(swedishpines)
max(nndist(swedishpines))
maxnndist(swedishpines)
if(interactive()) {
X <- rpoispp(1e6)
system.time(min(nndist(X)))
system.time(minnndist(X))
}