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\name{volcano}
\alias{volcano}
\title{Topographic Information for the Maunga Whau Volcano}
\usage{data(volcano)}
\description{
  Maunga Whau (Mt Eden) is one of about 50 volcanos in the Auckland
  volcanic field.  This data set gives topographic information for
  Maunga Whau on a 10m by 10m grid.
}
\format{A matrix with 87 rows and 61 columns, rows corresponding to grid
  lines running east to west and columns to grid lines running south to
  north.}
\source{
  Digitized from a topographic map by Ross Ihaka.
  These data should not be regarded as accurate.
}
% FIXME: missing \references{}
\seealso{\code{\link{filled.contour}} for a nice plot.}
\examples{
data(volcano)
filled.contour(volcano, color = terrain.colors, asp = 1)
title(main = "volcano data: filled contour map")
}
\keyword{datasets}