United States Map
USAGE: 
map("usa")
map("state")
map("county")

These databases produce maps of the United States at various levels of detail and were generated from US Department of the Census data (see the reference). The "usa" database contains the national boundaries of the United States. The "state" database includes state boundaries, and the "county" database includes all county boundaries.

SEE ALSO:
map .
EXAMPLES: 
map('state', fill=T, col=colors)
REFERENCES:
Richard A. Becker, and Allan R. Wilks, "Maps in S", AT&T Bell Laboratories Statistics Research Report, 1991.

US Department of Commerce, Census Bureau, County Boundary File, computer tape, available from Customer Services, Bureau of the Census, Washingdon DC 20233.