GADM
Encyclopedia
GADM, the Database of Global Administrative Areas, is a high-resolution database of country administrative areas, with a goal of "all countries, at all levels, at any time period." The database has a few export formats, including shapefiles that are used in most common GIS applications . Files formatted for the programming language R
R (programming language)
R is a programming language and software environment for statistical computing and graphics. The R language is widely used among statisticians for developing statistical software, and R is widely used for statistical software development and data analysis....

are also available, allowing the easy creation of descriptive data plots that include geographical maps.

Although it is a public database, GADM has a higher spatial resolution than other free databases , and also higher than commercial software such as ArcGIS .
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK