[GRASS-user] unable to reproduce r.water.outlet example of GRASS book

[Markus Neteler]

On Wed, Sep 7, 2011 at 8:22 AM, Markus Metz
<markus.metz.giswork at googlemail.com> wrote:
> Moritz Lennert wrote:
>> Hello,
>>
>> I'm trying to reproduce an exercise of the GRASS book, third edition, pp.
>> 145-146, which demonstrates the usage of r.water.outlet. ...
>
> The version of r.watershed used for the example in the book had some
> bugs, in particular a bias towards diagonal drainage direction which
> is mosz notable with high-res LiDAR DEMs like elev_lid792_1m. One
> consequence is that accumulation patterns shifted a bit and
> east=638872.6 north=220042.6 are most probably no longer falling onto
> a main channel leading to minute basins.
...

I have added NULL support in r.water.outlet and added a working example to
the manual page [1]. Works nicely.

Markus

[1] http://trac.osgeo.org/grass/browser/grass/branches/releasebranch_6_4/raster/r.water.outlet/description.html
     http://trac.osgeo.org/grass/browser/grass/branches/releasebranch_6_4/raster/r.water.outlet/r_water_outlet.png
(in the online manual on Saturday after the automated compilation on the
GRASS server)