| % File src/library/datasets/man/volcano.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{volcano} |
| \docType{data} |
| \alias{volcano} |
| \title{Topographic Information on Auckland's Maunga Whau 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. |
| } |
| \usage{volcano} |
| \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{ |
| require(grDevices); require(graphics) |
| filled.contour(volcano, color.palette = terrain.colors, asp = 1) |
| title(main = "volcano data: filled contour map") |
| } |
| \keyword{datasets} |