[GRASS-user] Re: r.watershed: pretty flat areas

Jarosław Jasiewicz jarekj at amu.edu.pl
Thu May 13 02:00:10 EDT 2010


Markus Metz pisze:
> On Wed, May 12, 2010 at 9:00 PM, Hamish <hamish_b at yahoo.com> wrote:
>   
>> before & after screenshots welcome :)
>>     
>
> before:
> http://sites.google.com/site/markusmetzgiswork/accumulation_regular.png
>
> after:
> http://sites.google.com/site/markusmetzgiswork/accumulation_beautified.png
>
> less straight flow, main flow is more centered in the lake. I can't
> say if this is more accurate, but it looks nicer. It's not perfect,
> see south-eastern part of the lake.
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>   
Hi
As a way to proper drainage network topology it looks almost perfect.
In DEM there is no information (if lake is represented by "flat area" on 
DEM) about flow structure in the lake so that approach looks good for 
me, if real flow is unknown!

Good work Markus!
J.



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