Opened 3 years ago

Closed 3 years ago

#3410 closed defect (worksforme)

r.watershed doesn't route flow when the flow (input) is null

Reported by: mankoff Owned by: grass-dev@…
Priority: normal Milestone:
Component: Docs Version: 7.2.1
Keywords: Cc:
CPU: Unspecified Platform: Unspecified

Description

The documentation states that a MASK is not necessary and null DEM values can be used as a mask, but does not state that null FLOW also acts as a mask. Seems like a minor doc bug.

Change History (3)

comment:1 Changed 3 years ago by mankoff

Or better yet, rather than a doc bug, a new flag so that null flow can be treated as zero would be nice.

comment:2 Changed 3 years ago by annakrat

I think how it works now is consistent with how nulls are generally treated in GRASS, they propagate. So it could be explicitly explained in the manual, but I wouldn't say it's a bug. As for the flag, I am not sure if that's necessary when you can solve it with r.null.

comment:3 Changed 3 years ago by mankoff

Resolution: worksforme
Status: newclosed
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