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Keyhole Markup Language ( KML) is an XML notation for expressing geographic annotation and visualization within two-dimensional maps and three-dimensional Earth browsers. KML was developed for use with Google Earth, which was originally named Keyhole Earth Viewer. It was created by Keyhole, Inc, which was acquired by Google in 2004.
However, new file formats have continued to appear, especially with the proliferation of web mapping; formats such as the Keyhole Markup Language (KML) and GeoJSON can be more easily integrated into web development languages than traditional GIS files. Format characteristics
The Geography Markup Language (GML) is an XML encoding in compliance with ISO 19118 for the transport and storage of geographic information modelled according to the conceptual modelling framework used in the ISO 19100-series and including both the spatial and nonspatial properties of geographic features.
Keyhole Markup Language (KML) files specify a set of features that can be displayed in compatible mapping or geospatial software, including web mapping services. On Wikipedia, KML files commonly accompany articles related to linear features such as roads, train lines, flight paths, and more; KML files may also be used with polygon features ...
In the same aspect, Google, one of the pioneers in web-based GIS, has developed its own language, which also uses an XML structure. Keyhole Markup Language (KML) is a file format used to display geographic data in an earth browser, such as Google Earth, Google Maps, and Google Maps for mobile browsers "Google KML definition" .
GPX, or GPS Exchange Format, is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoints, tracks, and routes. It is an open format [2] and can be used without the need to pay license fees. Location data (and optionally elevation, time, and other information) is stored in tags and can be ...
Language links are at the top of the page across from the title. ... Kml. Add languages. Add links. Article; Talk; English. ... Keyhole Markup Language;
OpenLayers supports GeoRSS, KML (Keyhole Markup Language), Geography Markup Language (GML), GeoJSON and map data from any source using OGC-standards as Web Map Service (WMS) or Web Feature Service (WFS). History. The library was originally based on the Prototype JavaScript Framework.