Topographic Information on Auckland's Maunga Whau Volcano
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.
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.
Digitized from a topographic map by Ross Ihaka. These data should not be regarded as accurate.
filled.contour for a nice plot.
require(grDevices); require(graphics) filled.contour(volcano, color.palette = terrain.colors, asp = 1) title(main = "volcano data: filled contour map")