Unit: US survey foot
Data source: OGP
Information source: ISO 19111 "Geographical information - Spatial referencing by coordinates".
Revision date: 2016-02-15
Orientation: up
Abbreviation: H
Axis order: 1..
Remarks: Used in a 1D vertical coordinate system.
Coordinate system: Vertical CS. Axis: height (H). Orientation: up. UoM: ftUS.
Description: Height influenced by the Earth's gravity field. In particular, orthometric height or normal height which are both approximations of the distance of a point above sea level. Positive upwards.
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::9003" gml:id="epsg-axis-112"> <gml:descriptionReference xlink:href="urn:ogc:def:axis-name:EPSG::9904" /> <gml:identifier codeSpace="OGP">urn:ogc:def:axis:EPSG::112</gml:identifier> <gml:axisAbbrev>H</gml:axisAbbrev> <gml:axisDirection codeSpace="EPSG">up</gml:axisDirection> </gml:CoordinateSystemAxis>