https://github.com/cran/spatstat
Tip revision: 181a5f15dd6108e818c3e157b576eee3b7e81826 authored by Adrian Baddeley on 03 November 2013, 10:34:29 UTC
version 1.34-1
version 1.34-1
Tip revision: 181a5f1
selfcrossing.psp.Rd
\name{selfcrossing.psp}
\alias{selfcrossing.psp}
\title{Crossing Points in a Line Segment Pattern}
\description{
Finds any crossing points between the line segments in a
line segment pattern.
}
\usage{
selfcrossing.psp(A)
}
\arguments{
\item{A}{
Line segment pattern (object of class \code{"psp"}).
}
}
\value{
Point pattern (object of class \code{"ppp"}).
}
\details{
This function finds any crossing points between
different line segments in the line segment pattern \code{A}.
A crossing point occurs whenever one of the line segments in \code{A}
intersects another line segment in \code{A}, at a nonzero
angle of intersection.
}
\seealso{
\code{\link{crossing.psp}},
\code{\link{psp.object}},
\code{\link{ppp.object}}.
}
\examples{
a <- psp(runif(10), runif(10), runif(10), runif(10), window=owin())
plot(a, col="green", main="selfcrossing.psp")
P <- selfcrossing.psp(a)
plot(P, add=TRUE, col="red")
}
\author{
Adrian Baddeley
\email{Adrian.Baddeley@uwa.edu.au}
\url{http://www.maths.uwa.edu.au/~adrian/}
and Rolf Turner
\email{r.turner@auckland.ac.nz}
}
\keyword{spatial}
\keyword{manip}