What is the best way to produce a DEM and to represent the topography of an area? is it from ASTER GDEM 1.5 arc second data or SRTM 3 arc second data.
Can such contour from the DEM represent the true surface elevation taking orthometric and ellipsoidal into account.
thank you for your answer
You need to be a member of Land Surveyors United - Surveying Education Community to add thoughts!
Add Posts, Surveying Photos, Videos and Articles to the Surveyor Community
Add Stuff to Community
We are committed to allowing freedom of expression for all of our members, and that includes maintaining a safe space for people with opposing views to express themselves. We get posts from all over the country and even the globe, so needless to say, people come with different viewpoints on lad surveying practices and processes. We see this diversity and variety as a real strength-- dialogue and debate are an integral part of the educational process, as well as an important tool in exploring different sides of complex issues.
Replies
DEM is not used in common,
This could be derived as geoid or ellipsoid by various means but for us DTM is the most important as surveyors.
Off course DTM is the most Important. thanks for your post
Take a look at the attached document and let me know if this helps you..
Thanks For the attachment, but my main problem is which of the following attached image dose the DEM represent or what is the relationship between DEM and the attached image. thank you
Perhaps you could tell us more about the context of the question. Take a look at this and this...is this school or work related? just curious