Raw Coordinate Data to DEM

[Guest toonarmy_9]

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!

[Guest Horst]

Hi,Can not follow exactly your question!But maybe this freeware tools can help you:http://www.visualizationsoftware.com/3dem.htmlhttp://www.planetside.co.uk/terragen/productmain.shtmlRegardsHorst

[Guest toonarmy_9]

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.

[Guest Horst]

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