Thursday, April 30, 2009

File Extension KML

Hello all! Are you ready for another File Extension? Yeah, I thought so. Ok, here it is. Today, we will learn about File extension KML. KML is most commonly used to refer to a Keyhole Markup Language file. KML files are primarily used to store geographical information in a standard XML format which is used by Google Earth.

Keyhole Markup Language was originally created by a software company called Keyhole Inc for use with Keyhole Earth Viewer, which later became Google Earth. The file extension KML format was developed specifically to store geographical information and annotations which could be overlaid on maps. KML files contain a longitude and latitude as well as place markers, polygon shapes, images and text which can be used to illustrate or label a specific place or area on a map. Additional information, such as camera angle and altitude as well as linked textured 3D objects can also be stored for use with 3D earth browsing software. KML files allow developers to create customized layers of information which can be overlaid on existing maps for illustration or abstraction purposes.

File extension KML has been an open standard for use in geographical browsers, and is currently used by a number of websites and applications including Google Earth, Google Maps, Microsoft Virtual Earth, Earths Ector GIS and Geomedia among others. Just in case you were wondering, XML is a document creation language developed to replace HTML and provide more structure to documents and we all know HTML is a language for creating web pages. So, there you have it. Hope you enjoyed yet another File Extension that you may not have heard of before.

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