Tagged Questions
1
vote
0answers
65 views
“topo to raster” tool
is there any analogue of "topo to raster" tool (ArcGIS) in QGIS? I need to creates surfaces from shp for some cases from points and for some from lines and this instrument is very convenient.
11
votes
3answers
236 views
PostGIS interpolation / triangulation options
I'm looking for an open source workflow to automate DEM construction. We have a series of sites that fall within a LIDAR dataset. We want to create site specific DEM's for each site, and we're ...
4
votes
2answers
2k views
Correct way to create a DEM from point data in csv files
I know this might seem a somewhat general question, but I have to start somewhere.
I have a lot of csv files which contain point data containing height, aspect and slope measurements at a resolution ...
4
votes
1answer
326 views
Which interpolation method is the most suitable for DEMs?
Which interpolation method is the best suitable for hill/valley areas and normal ground with undulations and rivers? When working with Aster 30mX30m DEMs, which method will give the most realistic ...
7
votes
1answer
541 views
Partially update a raster (a DEM)
My todays question is: How to update an .img DEM in ArcView 9.3?
I do have DEM which need to be updated only if few parts. The area to be updated has been produced in separate DEM with Spline ...
