DEM is Digital Elevation Model. A method of storing ground height data in a computer readable form. The DEM data used by many Trainz route creators comes from satellites often using ground radar technology. Accuracies down to 1 metre or less are possible depending on the source of the data. The data sources are often publicly accessible and free sites run by governments or government agencies such as NASA, ESA, and local mapping authorities.
TransDEM is a payware product that has been specifically designed to take DEM data and convert it into Trainz route maps, complete with the track if you want. It takes all the fun out of route creation (only kidding).
Last edited by pware; December 7th, 2018 at 07:53 PM.
Reason: typo
A member of the "Party Machine". Now if only I could remember where they are holding the party!