[Geotiff] Vertical Coordinate Systems and Datums - tag best practice

[Frank Warmerdam]

Folks,

I have tried to capture some suggested "best practice" on GeoTIFF tags
for vertical coordinate systems in the GeoTIFF Trac wiki at:

   http://trac.osgeo.org/geotiff/wiki/VerticalCS

Let me know if folks think this is wrong or if you have improvements you
would like to make.  The advice here should apply in the GeoTIFF context
as well as in .las files, jpeg2000 and other contexts based directly on
GeoTIFF tags.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent