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List of GIS data sources. This is a list of GIS data sources (including some geoportals) that provide information sets that can be used in geographic information systems (GIS) and spatial databases for purposes of geospatial analysis and cartographic mapping. This list categorizes the sources of interest.
The GAUL always maintains global geographic layers (in shapefile format) with a unified coding system at the levels of country, first administrative (e.g. regions), and second administrative (e.g. districts). In addition, when data is available, it provides layers on a country-by-country basis down to third, fourth and lower levels.
The shapefile format is a geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [1] The shapefile format can spatially describe vector features: points, lines, and polygons ...
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] Although it is a public database, GADM has a higher spatial resolution than other free databases, [3] and also higher than commercial software such as ...
License. GNU GPLv2. Website. qgis.org /en /site /. QGIS is a geographic information system (GIS) software that is free and open-source. [2] QGIS supports Windows, macOS, and Linux. [3] It supports viewing, editing, printing, and analysis of geospatial data in a range of data formats. QGIS was previously also known as Quantum GIS.
UN geoscheme subregions of Africa: Eastern Africa. Middle Africa. Northern Africa. Southern Africa. Western Africa. The following is an alphabetical list of subregions in the United Nations geoscheme for Africa, used by the United Nations and maintained by the UNSD department for statistical purposes. [1]
Rifts in Sudan and Kenya. The Blue Nile Basin is a major geological structure in the northwestern Ethiopian Plateau formed in the Mesozoic Era during a period of crustal extension associated with the break-up of Gondwana, and filled with sedimentary deposits. The modern Blue Nile river cuts across part of the sedimentary basin.
Website. www.esri.com. Environmental Systems Research Institute, Inc., doing business as Esri (/ ˈɛzriː /), [5] is an American multinational geographic information system (GIS) software company headquartered in Redlands, California. [6] It is best known for its ArcGIS products. With a 40% market share in 2011, Esri is one of the world's ...