![]() ![]() (-77.03647, 38.89763, 0).Ī formal definition of the coordinate reference system (encoded as GML) used by KML is contained in the OGC KML 2.2 Specification. (-77.03647, 38.89763) then the default value of 0 (approximately sea level) is assumed for the altitude component, i.e. If altitude is omitted from a coordinate string, e.g. The vertical component (altitude) is measured in meters from the WGS84 EGM96 Geoid vertical datum. ![]() The longitude, latitude components (decimal degrees) are as defined by the World Geodetic System of 1984 (WGS84). The MIME type associated with KML is application/+xml the MIME type associated with KMZ is application/.įor its reference system, KML uses 3D geographic coordinates: longitude, latitude and altitude, in that order, with negative values for west, south and below mean sea level if the altitude data is available. By convention the root KML document is at root level and referenced files are in subdirectories (e.g. The root KML document by convention is a file named "doc.kml" at the root directory level, which is the file loaded upon opening. The contents of a KMZ file are a single root KML document (notionally "doc.kml") and optionally any overlays, images, icons, and COLLADA 3D models referenced in the KML including network-linked KML files. kmz file might not uncompress in all geobrowsers. ![]() stored or deflate method), otherwise the. ![]() These must be legacy (ZIP 2.0) compression compatible (i.e. KML files are very often distributed in KMZ files, which are zipped KML files with a. Some KML information cannot be viewed in Google Maps or Mobile. KML shares some of the same structural grammar as GML. Other data can make the view more specific, such as tilt, heading, altitude, which together define a "camera view" along with a timestamp or timespan. Each place always has a longitude and a latitude. The KML file specifies a set of features (place marks, images, polygons, 3D models, textual descriptions, etc.) for display in Here Maps, Google Earth, Maps and Mobile, or any other geospatial software implementing the KML encoding. ![]()
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