Sign in to follow this  
Guest Horst

Raw Coordinate Data to DEM

Recommended Posts

Hi,I am new to terrain visualization and currently doing my Final Year Project in my varsity. I am given altitudes of lat/long pairs as raw data and expected to process them into either DEM or any other format to do terrain visualization.Could anyone advise me on how to process these data? Thanks!

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

Thanks a lot HorstThe data I have is from land surveyors measuring the altitudes of different parts of my country. It is almost like the contours data on a topo map only that it is in numerical form.eg.0103.85767, 1.449977103.85846, 1.450312103.85937, 1.449716103.86201, 1.446626103.86283, 1.444439103.86553, 1.442052103.86631, 1.440423103.86667, 1.438714103.86583, 1.437537103.86456, 1.437956103.86037, 1.442609103.86012, 1.443703103.86029, 1.445974103.85767, 1.449977END10103.68143, 1.371256103.68066, 1.371613103.68031, 1.373162103.68039, 1.373449103.68079, 1.373124103.68097, 1.37207103.68179, 1.372046103.68194, 1.371933103.682, 1.371592103.68173, 1.37118103.68186, 1.370841103.68178, 1.370684103.68143, 1.371256ENDthe first number gives the altitude in metres wheares the following data gives the lat/long.I am expected, from these data, convert them to DEM/TIN model so that i can use for terrain visualization later.

Share this post


Link to post
Share on other sites

Hello,Without a professional GIS program (very expensive, maybe you have access on an other machine, where a program is installed), it is not easy!Your data needs interpolation to get a grid!There are two different types can be interpolated.- Lines having only one z elevation information (like yours)- Or every point has the z value, but they are scattered then.e.g. yours :103.85767, 1.449977, 0103.85846, 1.450312, 0103.85937, 1.449716, 0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this