Generate N Uniform Random Points On Line Segments
Given a line segment pattern, generate a random point pattern
consisting of n points uniformly distributed on the
line segments.
runifpointOnLines(n, L, nsim=1, drop=TRUE)
n |
Number of points to generate. |
L |
Line segment pattern (object of class |
nsim |
Number of simulated realisations to be generated. |
drop |
Logical. If |
This command generates a point pattern consisting of n
independent random points, each point uniformly distributed on
the line segment pattern. This means that, for each random point,
the probability of falling on a particular segment is proportional to the length of the segment; and
given that the point falls on a particular segment, it has uniform probability density along that segment.
If n is a single integer, the result is an unmarked point
pattern containing n points.
If n is a vector of integers, the result is a marked point
pattern, with m different types of points, where
m = length(n),
in which there are n[j] points of type j.
If nsim = 1,
a point pattern (object of class "ppp") with the same
window as L.
If nsim > 1, a list of point patterns.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Rolf Turner r.turner@auckland.ac.nz
X <- psp(runif(10), runif(10), runif(10), runif(10), window=owin()) Y <- runifpointOnLines(20, X) plot(X, main="") plot(Y, add=TRUE) Z <- runifpointOnLines(c(5,5), X)
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