bdist.tiles.Rd
\name{bdist.tiles}
\alias{bdist.tiles}
\title{Distance to Boundary of Window}
\description{
Computes the shortest distances
from each tile in a tessellation
to the boundary of the window.
}
\usage{
bdist.tiles(X)
}
\arguments{
\item{X}{A tessellation (object of class \code{"tess"}).}
}
\value{
A numeric vector,
giving the shortest distance from each tile in the tessellation
to the boundary of the window.
Entries of the vector correspond to the entries of \code{tiles(X)}.
}
\details{
This function computes, for each tile \eqn{s_i}{s[[i]]}
in the tessellation \code{X}, the shortest distance
from \eqn{s_i}{s[[i]]}
to the boundary of the window \eqn{W} containing the tessellation.
}
\seealso{
\code{\link{tess}},
\code{\link{bdist.points}},
\code{\link{bdist.pixels}}
}
\examples{
P <- runifpoint(15)
X <- dirichlet(P)
plot(X, col="red")
B <- bdist.tiles(X)
# identify tiles that do not touch the boundary
plot(X[B > 0], add=TRUE, col="green", lwd=3)
}
\author{\adrian
and \rolf
}
\keyword{spatial}
\keyword{math}