I have downloaded some data from http://asterweb.jpl.nasa.gov/gdem.asp
I would like to relate the elevations to some coastal data which is estimated to a specific ordnance dataum.
Can anyone tell me what the datum (i.e. 0) refers to in ASTER data?
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.Sign up to join this community
Here's a one-line answer for you: in this Aster User Guide on page 55 the Datum for all ASTER data processed at GDS is WGS84.
Another one liner: this post has plenty of datum discussion.
We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.