world: Low (mid) resolution World Map

Description

This updated world map is imported from the Natural Earth project (the 1:50m resolution version). It is up to date (2013) and replaces a much older version based on the CIA World Data Bank II data. That older version is still included in the package and can reached as legacy_world.

Usage

data(worldMapEnv)

Arguments

format

The data file is merely a character string which specifies the name of an environment variable which contains the base location of the binary files used by the map drawing functions. This environment variable (R_MAP_DATA_DIR_WORLD) is set at package load time if it does not already exist. Hence setting the environment variable before loading the package can override the default location of the binary datasets.

During a transition period (maps version 3.0) it is possible to switch to the old legacy map using the function world.legacy(TRUE) or by setting the setting the environment variable R_MAP_DATA_LEGACY=TRUE prior to loading the package.

source

The Natural Earth data set is available from http://www.naturalearthdata.com.

The legacy CIA World Data Bank II is currently (mid-2003) available from http://www.evl.uic.edu/pape/data/WDB/.

References

Richard A. Becker, and Allan R. Wilks, "Maps in S", AT&T Bell Laboratories Statistics Research Report [93.2], 1993.

Richard A. Becker, and Allan R. Wilks, "Constructing a Geographical Database", AT&T Bell Laboratories Statistics Research Report [95.2], 1995.

Examples

Run this code

map('world', fill = TRUE, col = 1:10)

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