volcano {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(graphics)
    filled.contour(volcano, color = terrain.colors, asp = 1)
    title(main = "volcano data: filled contour map")

[Package datasets version 2.3.1 Index]