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DIVA-GIS is a free geographic information system software program used for the analysis of geographic data, especially species occurrence data. The software was first designed for application to the study of the distribution of plants, especially crop wild relatives such as wild potatoes .
GIS data for Commonwealth of Pennsylvania; Name Description; Pennsylvania Spatial Data Access: State wide GIS datasets provided by Pennsylvania State University: Open Data Philly: Data repository for the City of Philadelphia, which includes GIS data-sets relating to the Philadelphia region, available to view and download in various formats
The sortable table below contains the three sets of ISO 3166-1 country codes for each of its 249 countries, links to the ISO 3166-2 country subdivision codes, and the Internet country code top-level domains (ccTLD) which are based on the ISO 3166-1 alpha-2 standard with the few exceptions noted. See the ISO 3166-3 standard for former country codes.
Shapefiles : are a data exchange format created by ESRI and one of the most widely used GIS/geodata formats. One "shapefile" usually include four different files : .shp, .shx, .dbf, .prj.
Also detrending of data is possible. Finally 3D and 4D extensions are included with emphasis on direct computations of climatologies from ODV [ 4 ] spreadsheet files. The software whose first version was available since 1996, [ 5 ] can now be downloaded at the DIVA Archived 2017-12-01 at the Wayback Machine site and is the reference tool for ...
Free and open-source software portal; This is a category of articles relating to GIS software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy: "free software" or "open-source software".
Unlike the OGC Web Map Service (WMS), which portrays spatial data as static, server-rendered images (maps), the Web Coverage Service delivers underlying data values along with their detailed descriptions. This enables a rich syntax for queries against the data and returns information with its original semantics, rather than just pictures ...
The georelational data model was the basis for most early vector GIS software. [19] The geometric data and the attribute data are stored separately; this was originally because the geometric data required GIS-specific code to process it, but existing relational database software (RDBMS) could be