spatstat (version 1.8-5)

pairdist.ppp: Pairwise distances

Description

Computes the matrix of distances between all pairs of points in a point pattern.

Usage

pairdist.ppp(X, ..., method="C")

Arguments

X
A point pattern (object of class "ppp").
...
Ignored.
method
String specifying which method of calculation to use. Values are "C" and "interpreted". Usually not specified.

Value

  • A square matrix whose [i,j] entry is the distance between the points numbered i and j.

Details

This is a method for the generic function pairdist.

Given a point pattern X (an object of class "ppp"), this function computes the Euclidean distances between all pairs of points in X, and returns the matrix of distances.

The argument method is not normally used. It is retained only for checking the validity of the software. If method = "interpreted" then the distances are computed using interpreted R code only. If method="C" (the default) then C code is used. The C code is somewhat faster.

See Also

pairdist, pairdist.default, pairdist.psp, crossdist, nndist, Kest

Examples

Run this code
data(cells)
   d <- pairdist(cells)

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