[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
  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

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.

Ticket URL: <https://trac.osgeo.org/grass/ticket/2979#comment:2>
GRASS GIS <https://grass.osgeo.org>

More information about the grass-dev mailing list