File Extension KML Everything You Need To Know About File Extensions |
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File Extension KMLKML file extension stands for Keyhole Markup Language. This file extension is used to store geographical annotation and visualization for web-based two and three dimensional Earth browsers. KMZ file extension is used to store zipped KML file. This is a popular way of KML files distribution to limit bandwidth use. It is possible to view KML file using simple text editor but format of this file could be quite complex to understand. To view KML format you can use following applications: ArcGIS Explorer, Feature Manipulation Engine (FME), Flickr, Google Earth, Google Maps, Google Mobile, Live Search Maps, Microsoft Virtual Earth, Mapufacture, Marble (KDE). For its reference system, KML uses 3D geographic coordinates: longitude, latitude and altitude, in that order. The longitude,latitude components are as defined by the World Geodetic System of 1984 (WGS84). The vertical component (altitude) is measured from the WGS84 EGM96 Geoid vertical datum. If altitude is omitted from a coordinate string, e.g. (-122.917, 49.2623) then the default value of 0 (approximately sea level) is assumed for the altitude component, i.e. (-122.917, 49.2623, 0) is assumed. A formal definition of the coordinate reference system (encoded as GML) used by KML is contained in the OGC KML 2.2 Specification. This definition references well known EPSG CRS components.
We hope you found this description of File Extension KML useful.
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