[GRASS-dev] [GRASS GIS] #2979: r.watershed: better documentation for 'drainage' w/ MFD
GRASS GIS
trac at osgeo.org
Tue May 10 23:57:57 PDT 2016
#2979: r.watershed: better documentation for 'drainage' w/ MFD
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Reporter: mankoff | Owner: grass-dev@…
Type: enhancement | Status: new
Priority: normal | Milestone: 7.0.4
Component: Docs | Version: unspecified
Resolution: | Keywords: r.watershed
CPU: Unspecified | Platform: All
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Comment (by mmetz):
Replying to [ticket:2979 mankoff]:
> When using MFD, is the drainage direction the direction of maximum flow?
This isn't explicitly stated in the documentation. What if there is equal
drainage in two directions?
Yes, for MFD drainage direction follows maximum flow. In case of equal
flow in more than one direction, the first encountered is used. This could
be refined by using the steepest slope in case of equal flow. However,
with MFD chances are very small that several directions have equal flow.
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Ticket URL: <https://trac.osgeo.org/grass/ticket/2979#comment:2>
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