volcano               package:datasets               R Documentation

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.

See Also:

     '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")

