EPSG Dataset :: v12.054

Geographic2D with Height Offsets

Coordinate Operation Method Details [VALID]

Name:

Geographic2D with Height Offsets

Code:

9618

Operation is Reversible:

Yes

Formula:

Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.

Lat_T = Lat_S + latitude_offset
Lon_T = Lon_S + longitude_offset
EllipsoidHeight_T = GravityHeight_S + gravity-related_to_ellipsoid_height_offset.

Example:

(none)

Method
Parameters:

Parameter Name	Parameter Code	Sign reversal	Parameter Description
Latitude offset	8601	Yes	The difference between the latitude values of a point in the target and source coordinate reference systems.
Longitude offset	8602	Yes	The difference between the longitude values of a point in the target and source coordinate reference systems.
Geoid height	8604	Yes	Distance to a geoid surface from an ellipsoid surface along a line perpendicular to the ellipsoid surface, positive when the geoid is above (outside of) the ellipsoid. "Geoid height" is used loosely in the parameter name. If the offset is between the ellipsoid and the geoid then the offset will be the geoid separation N. When the offset is between the ellipsoid and a realisation of the geoid through a vertical datum then the offsets C will form a height correction surface. A height correction surface differs from a geoid model by small amounts due to the difference between the geoid and the actual datum surface, as well as some other assumptions regarding the gravity field.

Meta Data

Remarks:

This transformation allows calculation of coordinates in the target system by adding the parameter value to the coordinate values of the point in the source system.

Information Source:

EPSG guidance note #7-2, http://www.epsg.org

Data Source:

EPSG

Revision Date:

June 13, 2017

Change ID:

[1999.79] [2004.33] [2017.018]

Wildcard	Example
% or *	Any wildcard characters
? or _	One wildcard character
[ - ]	[ - ] Range e.g. N[a-c] will return all geodetic objects that contains a string starting with the letter 'N' or 'n' followed by any of the letters contained within the range specified within the square bracket, e.g. letters a, b and c.
\|	Or e.g. E[a\|e]M will return all geodetic objects that contains a string starting with the letter E(e), ends with the letter M(m) and also contain either the letter a or letter e.