Re: Bugs in r.stream.extract
Ken Mankoff <[email protected]>
| Newsgroups | gmane.comp.gis.grass.devel,gmane.comp.gis.grass.user |
|---|---|
| Message-ID | <[email protected]> |
On 2020-11-25 at 04:17 -08, ming han <[email protected]> wrote... > And another problem I got is that the flow accumulation I got from > r.accumulate and r.watershed is different when r.accumulate using flow > direction from r.watershed. Again is there anyway r.watershed supports > using flow direction, so we can get the consistent result. There may be reasons for these differences? For example, if SFD v. MFD, or the "-a" flag to r.watershed? > We need this when we need to adjust the flow direction from > r.watershed or r.stream.extract. and then we need to determine new > flow accumulation with an adjusted flow direction dataset. If the > result is inconsistent, not sure what is the solution is. It isn't clear why you are adjusting the flow direction. Is this required? >> But, If I only want to use flow direction to drive streams, which >> function I should use? https://grass.osgeo.org/grass78/manuals/r.water.outlet.html but this only works for 1 outlet. -k.