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GeoCommunity Discussions
SpatialNews Discussions --
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Subject: Re:level 1 DTED for Deschutes County Oregon project
Posted by: Wayne Hanson
on: Feb 7, 2013 14:39:19 CST
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I am not sure why you would want to use DTED for a project like this. Why not use NED, which is easily available. The problem in DTED Level 1 is the Orthometric Heights are relative to EGM-96 (Earth Gravity Model 1996), not any sort of local Mean Sea Level Datum. There could be feet difference beteen the two.
DTED Level 1, is made up of elevation postings ever 3" of Lat and Long. 3" is approx 300 feet on the ground. This will not make for a very dense model if you are trying to show elevation difference over a small area.
> I am looking for dted level 0 or level 1 quality digital terrain data that i can import as .DXF or DWG compatible file for injest into multiaxis CNC application.
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