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\name{rThomaslpp}
\alias{rThomaslpp}
\title{
Simulate Thomas Process on Linear Network
}
\description{
Generate a random point pattern, a realisation of the
Thomas cluster process, on a linear network.
}
\usage{
rThomaslpp(kappa, scale, mu, L, \dots, nsim=1, drop=TRUE)
}
\arguments{
\item{kappa}{
Intensity of the Poisson process of cluster centres.
A single positive number, a \code{function(x,y)}, or a pixel image
(object of class \code{"im"} or \code{"linim"}).
}
\item{scale}{
Standard deviation of random displacement (along the network)
of a point from its cluster centre.
}
\item{mu}{
Mean number of points per cluster (a single positive number)
or reference intensity for the cluster points (a function or
a pixel image).
}
\item{L}{
Linear network (object of class \code{"linnet"})
on which the point pattern should be generated.
}
\item{\dots}{
Arguments passed to \code{\link[spatstat.random]{rpoisppOnLines}}.
}
\item{nsim}{
Number of simulated realisations to generate.
}
\item{drop}{
Logical value indicating what to do when \code{nsim=1}.
If \code{drop=TRUE} (the default), the result is a point pattern.
If \code{drop=FALSE}, the result is a list with one entry which is a
point pattern.
}
}
\details{
This function generates realisations of the Thomas cluster process
on a linear network, described by Baddeley et al (2017).
Argument \code{L} can be omitted, and defaults to \code{as.linnet(kappa)},
when \code{kappa} is a function on a linear network (class
\code{"linfun"}) or a pixel image on a linear network (\code{"linim"}).
}
\value{
A point pattern on a network (object of class \code{"lpp"})
or a list of point patterns on the network.
}
\references{
Baddeley, A., Nair, G., Rakshit, S. and McSwiggan, G. (2017)
`Stationary' point processes are uncommon on linear networks.
\emph{STAT} \bold{6} (1) 68--78.
Baddeley, A., Nair, G., Rakshit, S., McSwiggan, G. and Davies, T.M. (2021)
Analysing point patterns on networks --- a review.
\emph{Spatial Statistics} \bold{42}, 100435,
DOI 10.1016/j.spasta.2020.100435.
}
\author{
Greg McSwiggan and \adrian.
}
\seealso{
\code{\link{rpoislpp}}
}
\examples{
plot(rThomaslpp(4, 0.07, 5, simplenet))
}
\keyword{datagen}
\keyword{spatial}
\concept{Linear network}
|
