Unit: metre
Data source: OGP
Information source: Open GIS Consortium
Revision date: 2002-02-12
Orientation: up
Abbreviation: R
Axis order: 3..
Remarks: Used to avoid the singularity when the two angles in a 3D polar coordinate system lie in the same plane.
Coordinate system: Spherical 3D CS. Axes: latitude, longitude, radius. Orientations: north, east, up. UoM: degrees, degrees, metres.
Description: The distance from the (geocentric) coordinate system origin to a point. The third axis of a spherical coordinate system.
Definition: OGP XML
<?xml version="1.0" encoding="UTF-8"?> <gml:CoordinateSystemAxis xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" uom="urn:ogc:def:uom:EPSG::9001" gml:id="epsg-axis-62"> <gml:descriptionReference xlink:href="urn:ogc:def:axis-name:EPSG::9928" /> <gml:identifier codeSpace="OGP">urn:ogc:def:axis:EPSG::62</gml:identifier> <gml:axisAbbrev>R</gml:axisAbbrev> <gml:axisDirection codeSpace="EPSG">up</gml:axisDirection> </gml:CoordinateSystemAxis>