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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.
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.
Layers are created using the Keyhole Markup Language, or KML, which users can also use to create customized layers. Locations can be marked with placemarks and organized in folders; For example, a user can use placemarks to list interesting landmarks around the globe, then provide a description with photos and videos, which can be viewed by ...
The ability to share keyhole markup language (KML) files through sites such as Google Maps means that researchers can find matches based on geographic location rather than just a place name. Family tree mapping applications. Genealogy software that can be used for family tree mapping include: Ahnenblatt using the supplied Google-Earth Plug-In.
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" .
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
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 ...
The program overlays NASA and USGS satellite imagery, aerial photography, topographic maps, Keyhole Markup Language (KML) and Collada files. Overview [ edit ] Though widely available since 2003, WorldWind was released with the NASA Open Source Agreement license in 2004.