volcano {base}R Documentation

Topographic Information for the 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

data(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.

Examples

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