1

I used grass gis v.surf.rst function to interpolate a surface using vector points. But it is very difficult to find a optimum parameters to be used. I am still unable to develop a accurate terrain

1
  • 1
    Welcome to gis.stackexchange! Please note that a good question on this site is expected to show some degree of research on your part, i.e. what you have tried and - if applicable - code so far. For more info, you can check our faq.
    – underdark
    Feb 6, 2016 at 22:27

1 Answer 1

2

At first, as you did not tell, you want to create a raster form the points. A similar question about this can be found here: How can I create a DEM from Point Data? Second, I think there are tools in grass, callable from qgis, to make a depressionless dem, like the r.fill.dir tool. Other GIS-people tend to use saga gis functions, as described here: http://www.saga-gis.org/saga_module_doc/2.1.3/ta_preprocessor_4.html. For myself I always used arcgis functions from hydrology toolbox.

1
  • I used grass v.surf.rst function to interpolate raster from points.But it is difficult to find optimum parameters to be used and i am still unable to develop an accurate terrain
    – Thilina
    Feb 7, 2016 at 14:23

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.