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\name{rasterToContour}
\alias{rasterToContour}
\title{ Raster to contour lines conversion}
\description{
RasterLayer to contour lines. This is a wrapper around \code{\link[grDevices]{contourLines}}
}
\usage{
rasterToContour(x, maxpixels=100000, ...)
}
\arguments{
\item{x}{ a RasterLayer object }
\item{maxpixels}{ Maximum number of raster cells to use; this function fails when too many cells are used}
\item{...}{Any argument that can be passed to \code{\link[grDevices]{contourLines}} }
}
\details{
Most of the code was taken from maptools::ContourLines2SLDF, by Roger Bivand & Edzer Pebesma
}
\value{
SpatialLinesDataFrame
}
\examples{
f <- system.file("external/test.grd", package="raster")
r <- raster(f)
x <- rasterToContour(r)
class(x)
plot(r)
plot(x, add=TRUE)
}
\keyword{ spatial }
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