runifpointOnLines
From spatstat v1.42-2
by Adrian Baddeley
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.
Usage
runifpointOnLines(n, L, nsim=1)
Arguments
- n
- Number of points to generate.
- L
- Line segment pattern (object of class
"psp"
) on which the points should lie. - nsim
- Number of simulated realisations to be generated.
Details
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.
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
.
Value
- If
nsim = 1
, a point pattern (object of class"ppp"
) with the same window asL
. Ifnsim > 1
, a list of point patterns.
See Also
Examples
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)
Community examples
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