I'm trying to generate a DTM from lidar data and I'm new in the this field.
I have different kind of files which describe the same area (different versions):
- *.xyz with variable grid width (1 to 4 meter), according to the information sheet I have.
How would you handle each file format to get a DTM? Specially in the case of the XYZ-data with variable grid width, I have no idea about what to do.
Once you have the DTM, how can I be sure about the correct geographic position of the DTM?
I want to use the DTM to analyse the terrain. Which kind of format (of the DTM) would you recommend?
I use ArcGIS (with extensions) and would prefer a solution process on this platform. However, if there is an open source solution it's fine too.