https://github.com/cran/spatstat
Tip revision: 2151b171ee22792ced777fc91ad82dad4bc97563 authored by Adrian Baddeley on 27 February 2008, 03:19:55 UTC
version 1.12-8
version 1.12-8
Tip revision: 2151b17
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@maths.uwa.edu.au}
\url{http://www.maths.uwa.edu.au/~adrian/}
and Rolf Turner
\email{rolf@math.unb.ca}
\url{http://www.math.unb.ca/~rolf}
}
\keyword{spatial}
\keyword{manip}