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 coordinates

Side Effects

uses the random number generator

See 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)))

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