DATUMS are the GEOGRAPHIC part of a Geographic Information System (GIS).
This section provides the essential, fundamentals needed by all GIS users.
Datums, coordinates systems and projections .... oh my !
The successful exchange of any spatial data requires an basic understanding of the essential principles. While these topic challenges even the most advanced users, GIS is meaningless without them.
...... from the EVER CHANGING world of datums !
Differential correction with NA2011 and the newest epoch of NAD83
See our and Datums Basics and GPS Tutorials for
the long-awaited results of months of rigorous testing and peer review