| pairdist.ppp {spatstat} | R Documentation |
Computes the matrix of distances between all pairs of points in a point pattern.
pairdist.ppp(X, ..., method="C")
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.
|
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.
A square matrix whose [i,j] entry is the distance
between the points numbered i and j.
Pavel Grabarnik pavel.grabar@issp.serpukhov.su and Adrian Baddeley adrian@maths.uwa.edu.au http://www.maths.uwa.edu.au/~adrian/
pairdist,
pairdist.default,
pairdist.psp,
crossdist,
nndist,
Kest
data(cells) d <- pairdist(cells)