Strauss {spatial} | R Documentation |
Simulates Strauss spatial point process.
Strauss(n, c=0, r)
n |
number of points |
c |
parameter c in [0, 1]. c = 0 corresponds to complete inhibition at
distances up to r .
|
r |
inhibition distance |
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
.
list of vectors of x and y coordinates
uses the random number generator
Ripley, B. D. (1981) Spatial Statistics. Wiley.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
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)))