Simulates Sequential Spatial Inhibition Point Process

Usage

SSI(n, r)

Arguments

n number of points
r inhibition distance

Description

Simulates SSI (sequential spatial inhibition) point process.

Details

uses the region set by ppinit or ppregion.

Value

list of vectors of x and y coordinates

Side Effects

Uses the random number generator.

WARNINGS

will never return if r is too large and it cannot place n points

See Also

Psim, Strauss

Examples

towns <- ppinit("towns.dat")
par(pty="s")
plot(Kfn(towns, 10), type="b", xlab="distance", ylab="L(t)")
lines(Kaver(10, 25, SSI(69,1.2)))


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