= Vertical Coordinate Systems and Datums = 

This page attempts to codify how vertical datums and vertical coordinate systems ought to be described in GeoTIFF files, and in the geotiff tags used by LAS format. 


== Related Resources ==

 * [http://trac.liblas.org/wiki/VerticalCS liblas preliminary Vertical CS proposal]
 * [http://trac.osgeo.org/proj/wiki/VerticalDatums PROJ.4 Vertical Datum Info]