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Learn how to obtain and add geographic coordinates to Wikipedia articles from various sources, such as maps, online services, directories, databases and calculators. Find out the preferred geotagging templates and the licensing information for different tools.
To get all such coordinates, all the articles in the database dump need to be run through a wikitext parser (such as the PHP one in MediaWiki) to expand all the templates, and the result parsed for coordinates. Alternatively, it is also possible to download the HTML generated from all the article and expanded template content (wikipedia-en-html ...
What3words (stylized as what3words) is a proprietary geocode system designed to identify any location on the surface of Earth with a resolution of about 3 metres (9.8 ft). It is owned by What3words Limited, based in London, England.
GEOREF is a grid-based method of specifying locations on the Earth, using a simpler and more flexible notation than latitude and longitude. It was used mainly for air navigation, and can identify quadrangles, areas, and altitudes with varying degrees of precision.
Geohash is a public domain geocode system that encodes a geographic location into a short string of letters and digits. It uses a hierarchical spatial data structure that subdivides space into buckets of grid shape, based on a Z-order curve or an И-order curve.
EPSG is a public registry of geodetic datums, spatial reference systems, Earth ellipsoids, coordinate transformations and related units of measurement. It is used by many geographic information systems (GIS) and GIS libraries to identify and manipulate coordinate reference systems.
Learn how to measure and communicate positions on Earth using latitude and longitude, and how different geodetic datums affect the coordinates. Explore the history and standards of the geographic coordinate system and its applications in cartography and geodesy.
Learn about the process of converting text-based descriptions of locations to geographic coordinates, and the history and applications of geocoding. Find out how geocoding relies on street networks, postal codes, and administrative boundaries.
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