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It was created by Keyhole, Inc, which was acquired by Google in 2004. KML became an international standard of the Open Geospatial Consortium in 2008. [1] [2] Google Earth was the first program able to view and graphically edit KML files, but KML support is now available in many GIS software applications, such as Marble, [3] QGIS, [4] and ArcGIS ...
Google Maps will only show the last kml file on the page. If you add a business route, it must come before the mainline, otherwise Google Maps will only display the business route. By copying the <Placemark></Placemark> and everything in between, you can merge multiple segments into a single KML file.
Center the screen on your location by double-clicking on it, then use the View in Google Maps button at the top (Google Earth 4.1 and newer). This will open Google Maps within Google Earth. You can see the center coordinates in decimal format in the address bar, but unfortunately you cannot copy them directly.
Additionally, links may also appear at the top-right of the page. Following the link to the specified web mapping service will load that website, with the map zoomed to the linear feature from the KML file, which will be highlighted. As of September 2015, Bing Maps and Google Maps are the only linked web mapping services.
Whereas GML is a language to encode geographic content for any application, by describing a spectrum of application objects and their properties (e.g. bridges, roads, buoys, vehicles etc.), KML is a language for the visualization of geographic information tailored for Google Earth. KML can be used to render GML content, and GML content can be ...
Keyhole Markup Language (KML) – XML based open standard (by OpenGIS) for GIS data exchange; MapInfo TAB format – MapInfo's vector data format using TAB, DAT, ID and MAP files; Measure Map Pro format – XML data format to store GIS data; National Transfer Format (NTF) – National Transfer Format (mostly used by the UK Ordnance Survey)
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"
Following positive feedback about Fusion Tables' integration with the Intensity map in the Google Visualization API, the team worked closely with the Google Maps team to add support in Feb 2010 for KML point, line and polygon objects as a native datatype in the tables, visualized on top of Google Maps' basemap. [5]