[GRASS-user] r.watershed MFD strange basin

[Markus Metz]

On Wed, May 9, 2012 at 9:30 AM, Markus Metz
<markus.metz.giswork at googlemail.com> wrote:
> On Wed, May 9, 2012 at 9:19 AM, ivan marchesini
> <ivan.marchesini at gmail.com> wrote:
>> Dear Markus,
>> thank you for your answer.
>>
>>> Please report if the stream segments are as expected, because the
>>> determination of half-basins and basins is based on the stream
>>> segments.
>>
>> this is the map of streams:
>> http://imageshack.us/photo/my-images/232/streams.png/
>>
>> it seems fine..
>>
>>
>>> If the stream segments seem out of place, something is wrong with the
>>> identification of stream segments and you will need to look at flow
>>> accumulation and check if that makes sense.
>>
>> this is the accumulation map:
>> http://imageshack.us/photo/my-images/37/accumulation.png/
>>
>> the same as above...
>>
>>
>>> If the stream segments seem to be ok, something is wrong with
>>> determining the left and right side of a stream.
>>
>> this is the map of basins:
>> http://imageshack.us/photo/my-images/11/basins.png/
>>
>> these are the half_basins:
>> http://imageshack.us/photo/my-images/4/halfbasins.png/
>>
>>
>> As you can see the problem arises for the half_basins and not only in
>> one place. There are a lot of problems all around.
>
> OK, now I have an idea where to look for the problem.

Should be fixed now in all branches.

Markus M