Simulates Strauss Spatial Point Process
Usage
Strauss(n, c=0, r)
Arguments
n
|
number of points
|
c
|
parameter c in [0, 1]. c = 0 corresponds to complete inhibition at
distances up to r .
|
r
|
inhibition distance
|
Description
Simulates Strauss spatial point process.Details
Uses spatial birth-and-death process for 4n
steps, or for 40n
steps
starting from a binomial pattern on the first call from an other function.
Uses the region set by ppinit
or ppregion
.Value
list of vectors of x and y coordinatesSide Effects
uses the random number generatorSee Also
Psim
, SSI
Examples
towns <- ppinit("towns.dat")
par(pty="s")
plot(Kfn(towns, 10), type="b", xlab="distance", ylab="L(t)")
lines(Kaver(10,25,Strauss(69,0.5,3.5)))