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")