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The Dimensionally Extended 9-Intersection Model (DE-9IM) is a topological model and a standard used to describe the spatial relations of two regions (two geometries in two-dimensions, R 2), in geometry, point-set topology, geospatial topology, and fields related to computer spatial analysis.
It is tools that support social and spatial network analysis. It is interoperable with other spatial analysis tools such as ARCGIS. See also Dynamic Network Analysis. [28] Isovist_2-3 – Free software for Mac and PC that provides advanced, real-time, high definition isovist point, path and field analysis in architectural plan and section drawings.
Because the world is much more complex than can be represented in a computer, all geospatial data are incomplete approximations of the world. [9] Thus, most geospatial data models encode some form of strategy for collecting a finite sample of an often infinite domain, and a structure to organize the sample in such a way as to enable interpolation of the nature of the unsampled portion.
The Geospatial Data Abstraction Library (GDAL) is a computer software library for reading and writing raster and vector geospatial data formats (e.g. shapefile), and is released under the permissive X/MIT style free software license by the Open Source Geospatial Foundation.
ArcObjects is a library of Component Object Model (COM) components that build up the foundation of Esri's ArcGIS platform. ArcObjects is written primarily in the C++ programming language. Since ArcGIS is completely built on top of ArcObjects, the ArcGIS platform can be fully customized and extended by making use of its COM services and ...
Government ArcGIS server addresses: Curated list of 3,500+ ArcGIS server addresses from federal to local. Updated once per week. Bad links fixed or flagged. NOAA Big Data Project: NOAA generates tens of terabytes of data a day from satellites, radars, ships, weather models, and other sources. While these data are publicly available, it is ...
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
These can be free, funded by advertising or paid for on subscription; they split into three areas: SaaS – Software as a Service: Software available as a service on the Internet ArcGIS Online – Esri's cloud based version of ArcGIS [20] CartoDB – Online mapping platform that offers an open source, cloud based SaaS model [21]