swh:1:snp:33a53053e50f7abe7d281cc0c803be827debf4a3
Tip revision: 83eabd78cec8fef7ed4c3b7bd0b911996c9957bb authored by Edzer J. Pebesma on 29 March 2005, 00:00:00 UTC
version 0.9-22
version 0.9-22
Tip revision: 83eabd7
meuse.grid.Rd
\name{meuse.grid}
\alias{meuse.grid}
\non_function{}
\title{ Prediction Grid for Meuse Data Set }
\usage{data(meuse.grid)}
\description{
The \code{meuse.grid} data frame has 3103 rows and 2 columns;
a grid with 40 m x 40 m spacing that covers the Meuse Study area
}
\format{
This data frame contains the following columns:
\describe{
\item{x}{a numeric vector; x-coordinate (see \link{meuse}) }
\item{y}{a numeric vector; y-coordinate (see \link{meuse}) }
\item{dist}{distance to the Meuse river; obtained by a spread
(spatial distance) GIS operation, from border of river; normalized to
$[0,1]$ }
\item{ffreq}{flood frequency; the lower the value, the larger the flood frequency; the origin of this item is questionable}
\item{part.a}{arbitrary division of the area in two areas, a and b}
\item{part.b}{see \code{part.a}}
\item{soil}{soil type; it is questionable whether these data come from a real soil
map}
}
}
\details{
\code{x} and \code{y} are in RDM, the Dutch topographical map
coordinate system. Roger Bivand projected this to UTM in the
R-Grass interface package.
}
\source{
\url{http://www.gstat.org/}
}
\references{
See the \link{meuse} documentation
}
\examples{
data(meuse.grid)
library(lattice)
xyplot(y~x, meuse.grid, asp=mapasp(meuse.grid), pch="+")
}
\keyword{datasets}