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\name{as.owin.lpp}
\alias{as.owin.lpp}
\alias{as.owin.lppm}
\title{Convert Data on a Network to class owin}
\description{
Converts data on a linear network
into an object of class \code{"owin"}.
}
\usage{
\method{as.owin}{lpp}(W, \dots, fatal=TRUE)
\method{as.owin}{lppm}(W, \dots, fatal=TRUE)
}
\arguments{
\item{W}{
Data specifying an observation window, in any of several formats
described under \emph{Details} below.
}
\item{fatal}{
Logical value determining what to do
if the data cannot be converted to an observation window.
See Details.
}
\item{\dots}{Ignored.}
}
\value{
An object of class \code{"owin"}
(see \code{\link[spatstat.geom]{owin.object}})
specifying an observation window.
}
\details{
The class \code{"owin"} is a way of specifying the observation window
for a point pattern. See \code{\link[spatstat.geom]{owin.object}}
for an overview.
The function \code{\link[spatstat.geom]{as.owin}}
converts data in any of several formats
into an object of class \code{"owin"} for use by the \pkg{spatstat}
package. The function \code{\link[spatstat.geom]{as.owin}}
is generic, with methods
for different classes of objects, and a default method.
A long list of methods for
\code{\link[spatstat.geom]{as.owin}}
is documented in the help file for \code{\link[spatstat.geom]{as.owin}}
in the \pkg{spatstat.geom} package.
This help file documents additional methods applicable when \code{W} is
\itemize{
\item
an object of class \code{"lpp"}
representing a point pattern on a linear network.
In this case, \code{as.owin} extracts the linear network
and returns a window containing this network.
\item
an object of class \code{"lppm"}
representing a fitted point process model on a linear network.
In this case, \code{as.owin} extracts the linear network
and returns a window containing this network.
}
If the argument \code{W}
cannot be converted to a window, then an error will
be generated (if \code{fatal=TRUE}) or a value of \code{NULL}
will be returned (if \code{fatal=FALSE}).
}
\seealso{
\code{\link[spatstat.geom]{as.owin}},
\code{\link[spatstat.geom]{owin.object}},
\code{\link[spatstat.geom]{owin}}.
Additional methods for \code{as.owin} may be provided
by other packages outside the \pkg{spatstat} family.
}
\examples{
as.owin(simplenet)
}
\author{
\spatstatAuthors.
}
\keyword{spatial}
\keyword{manip}
\concept{Linear network}
|
