[GRASS-user] r.carve - strange problem on dem carved

Markus Metz markus.metz.giswork at gmail.com
Sun Jan 20 15:08:52 PST 2013


On Sun, Jan 20, 2013 at 10:43 PM, Markus Neteler <neteler at osgeo.org> wrote:
> On Sat, Jan 19, 2013 at 12:54 PM, Ing. Pierluigi De Rosa
> <pierluigi.derosa at gfosservices.it> wrote:
>> Dear All
>> i'm preparing a DEM hydrologically correct
>
> Just FYI, there is also:
> http://grasswiki.osgeo.org/wiki/AddOns/GRASS7/raster#r.hydrodem

r.hydrodem does not carve predefined streams into a DEM, only r.carve
does that. Alternatively, you can can calculate the lowest elevation
value for each stream segment, carve that value into the DEM and then
use r.watershed without any further modifications to the DEM.

Markus M
>
> (perhaps someone here has an idea about the
> reported problem).
>
> Markus
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