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

GRASS GRASS user
1

Dear All
i'm preparing a DEM hydrologically correct carving it along a stream
line with r.carve.
Whether looking at profile of the dem carved I observe that exactly in
the cell corresponding to the stream line it does not carved the dem so
it create a channel but with a peak in the middle where i have the line.
Does anyone tried to use r.carve and have experienced the same problem?
In case how can i solve it?
thanks
Pierluigi
--

________________________________________________________________________
Ing. Pierluigi De Rosa (PhD)
Studio Associato GFOSSERVICES
                
Via Tilli 58 - 06127 Perugia (PG)
tel: 075 7825101 / fax: 075 7823038
cel: 3497558268
web: www.gfosservices.it
skype: pierluigi.derosa

2

On Sat, Jan 19, 2013 at 12:54 PM, Ing. Pierluigi De Rosa
<pierluigi.derosa@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

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

Markus

3

On Sun, Jan 20, 2013 at 10:43 PM, Markus Neteler <neteler@osgeo.org> wrote:

On Sat, Jan 19, 2013 at 12:54 PM, Ing. Pierluigi De Rosa
<pierluigi.derosa@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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