integral.linim.Rd
\name{integral.linim}
\alias{integral.linim}
\alias{integral.linfun}
\title{
Integral on a Linear Network
}
\description{
Computes the integral (total value) of a function or pixel image
over a linear network.
}
\usage{
\method{integral}{linim}(f, domain=NULL, ...)
\method{integral}{linfun}(f, domain=NULL, ...)
}
\arguments{
\item{f}{
A pixel image on a linear network (class \code{"linim"})
or a function on a linear network (class \code{"linfun"}).
}
\item{domain}{
Optional window specifying the domain of integration.
}
\item{\dots}{
Ignored.
}
}
\details{
The integral (total value of the function over the network) is calculated.
}
\value{
A numeric value.
}
\seealso{
\code{\link{linim}},
\code{\link{integral.im}}
}
\examples{
# make some data
xcoord <- linfun(function(x,y,seg,tp) { x }, simplenet)
integral(xcoord)
X <- as.linim(xcoord)
integral(X)
}
\author{
\adrian
\rolf
and \ege
}
\keyword{spatial}
\keyword{math}