[GRASS-user] faster watershed routing

2017-02-11 Thread Ken Mankoff
Hi GRASS list, I have a watershed raster with 200 million cells. I calculate the basins and the baseline accumulation (i.e. flow=1) and have done so with r.watershed like this: r.watershed -a elevation=e drainage=d accumulation=a basins=b threshold=5 --q That takes ~2 minutes. I now need

Re: [GRASS-user] ... getting rid of duplicate polygons ...

2017-02-11 Thread Huidae Cho
Uwe, It wouldn't be easy to tell what your problem is without seeing your dataset. If you don't want to share your dataset, maybe create a small subset of it so others can try it. Regards, Huidae On Fri, Feb 10, 2017 at 11:44 AM, Uwe Fischer wrote: > Hello list, > > > > I have a question about