Opened 3 years ago

Closed 4 months ago

#2979 closed enhancement (fixed)

r.watershed: better documentation for 'drainage' w/ MFD

Reported by: mankoff Owned by: grass-dev@…
Priority: normal Milestone: 7.6.0
Component: Docs Version: unspecified
Keywords: r.watershed Cc: mankoff@…
CPU: Unspecified Platform: All

Description

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?

Change History (9)

comment:1 Changed 3 years ago by martinl

Keywords: r.watershed added

comment:2 in reply to:  description Changed 3 years ago by mmetz

Replying to 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.

comment:3 Changed 3 years ago by martinl

Milestone: 7.0.47.0.5

comment:4 Changed 3 years ago by martinl

Milestone: 7.0.57.3.0

comment:5 Changed 3 years ago by martinl

Milestone: 7.3.07.4.0

Milestone renamed

comment:6 Changed 14 months ago by neteler

Milestone: 7.4.07.4.1

Ticket retargeted after milestone closed

comment:7 Changed 9 months ago by neteler

Milestone: 7.4.17.4.2

comment:8 Changed 6 months ago by martinl

Milestone: 7.4.27.6.0

All enhancement tickets should be assigned to 7.6 milestone.

comment:9 Changed 4 months ago by mankoff

Resolution: fixed
Status: newclosed

It appears this was fixed in [68419] on 11 May 2016 about a month after the ticket was opened.

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