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What is the .KML File Extension?

.KML File Extension Description:

The KML or Keyhole Markup Language is a language schema based on the Extensible Markup Language (XML). It is used to express visualization and geographic annotation on all 2D maps and 3D Earth browsers. KML was originally created for Google Earth, a virtual globe program that maps the earth by superimposing the images acquired from GIS 3D globe, satellites, and aerial photographs.

KML stores this geographic modeling information in XML format and uses the file extensions KML and KMZ for its files. The files with the .kml file extension are often distributed as zipped files with the .kmz file extension. When files with the .kmz file extension are unzipped, along with any overlay and icon images is a single doc.kml, which is referenced to the files with the .kml file extension.

Files with the .kml file extension specify sets of features such as 3D models, placemarks, polygons, and images alongside textual descriptions, which implement the KML encoding. Each place always contains latitude and a longitude. The rest of the data can be viewed in a more specific manner such as the camera view.

The files with the .kml file extension are often used at Google Earth for display, along with Google Maps, Google Maps for Mobile, and other 3D Geobrowsers. Developers to define custom layers of information for mapping services use them. They use the geographic coordinates in the World Geodetic System of 1984 for their reference system but the actual general concept of the geodetic reference system is not supported. Where in, there is a multiplicity in the Earth's coordinating systems.

Files with the .kml file extension can be created by using XML, with the use of the Google Earth interface, or with a text editor wherein raw KML data are entered from scratch, after which they can be compressed into KMZ archives. These files can be shared through email, within the local area network, or via Earth browsers, just as how HTML browsers display HTML files.

Many other applications display files with the .kml file extension such as Adobe PhotoShop, AutoCAD, Yahoo Pipes, NASA WorldWind, and ESRI ArcGIS Explorer.

Author: Keyhole Inc.
Author URL:
Related Applications: Google Earth, Google Maps
Common Path: C:/ Program Files


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Do you have errors with .KML files?

The Cause for .KML files Errors:

When you get errors with .KML files you are in all likelihood experiencing a severe Windows file error - the error could be the result of damage in your program registry and you should work to correct it immediately to prevent further damage to the file system. Risks include system device failure, blue screen errors and fatal crashes.

Symptoms of .KML files Errors:

Typical symptoms from .KML files errors include reduced computer speed, excessive software load times, failure accessing documents, excessive pauses in program routines, applications shuts down without displaying an error message, screen freezes and software crash.

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