GADM

GADM
Level 1 administrative divisions of Germany, created from GADM data
Original author(s) Robert J. Hijmans
Initial release 2009 (2009)
Stable release
3.6 / 6 May 2018 (2018-05-06)[1]
Written in shapefile
Type Geographic Information Systems, Data visualization
License Copyrighted with academic friendly policy
Website gadm.org

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."[2]

The database is available in a few export formats, including shapefiles that are used in most common GIS applications.[3] Files for use with the data analysis language R are also available.

The files allow for data analysis as well as the easy creation of descriptive data plots that include geographical maps.[4][5]

Although it is a public database, GADM has a higher spatial resolution than other free databases,[6] and also higher than commercial software such as ArcGIS.[7]

GADM is not freely available for commercial use. The GADM project created the spatial data for many countries from spatial databases provided by national governments, NGO, and/or from maps and lists of names available on the Internet (e.g. from Wikipedia).

See also

References

  1. ↑ "GADM data". Gadm.org. Retrieved May 18, 2018.
  2. ↑ Main GADM website
  3. ↑ Marine Life Mapping & Visualisation
  4. ↑ chloropleth map of deforestation in Africa
  5. ↑ Swiss canton languages
  6. ↑ Free Geography Tools website
  7. ↑ Kelly Center blog
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