Useful Pages

 Managing DEMs
 Topographic maps
 Styles
 Automation
 Mobile apps
This is an old revision of the document!
This terminology is generally sourced from Appendix A of 'Datums and Map Projections' (Iliffe & Lott 2008) based off the ISO 19111 terms.
Term  Comment 

Coordinate  A sequence of n numbers designating the position of a point in ndimensional space 
Coordinate conversion  Change of coordinates from one CRS to another in which the two CRSs are based on the same datum 
Coordinate operation  Change of coordinates with a 1to1 relationship, from one CRS to another. Comprised of coordinate conversion and coordinate transformation processes 
Coordinate reference system (CRS)  A coordinate system that through a datum, has defined position, scale and orientation with respect to an object (usually the Earth) 
Coordinate system  Set of rules defining how coordinates are assigned to points 
Coordinate transformation  Change of coordinates from one CRS to another, where the CRSs datums differ 
Datum  Defines the position of the origin, the scale and the orientation of the axis of a coordinate system with respect to an object 