Hi,
This is where a little fill-in brush tool "À la Photoshop" would be
nice. On a more serious note, you could isolate the area and use a
flood model to fill it in. Then use raster math to stick it all back
together. Posting a picture of you problem could help.
Nicolas
On 2018-11-08 8:49 AM, Ulrich Kriechbaum wrote:
Dear all!
I investigate a Glacial-Lake Outburst Flood and try to back-calculate
the event using the simulation tool r.avaflow. During the event there
was a big trench eroded. I have a post-event DEM with a clearly
visible eroded trench. What i want to do now is to "flatten" out the
trench so that i get a pre-event DEM to start my simulation. What i
tried to do is to create the contour lines of the post-event DEM,
change them so that they would not show the trench and then create a
pre-event DEM out of this contour lines. I already asked the question,
if anyone knows how to do that, i already got some nice answers but
unfortunately none of the inputs really work for me....
So now to my actual question: Does anyone know another method how to
"flatten" out the trench in the DEM? I would be really glad if someone
would have an answer, as i have ben struggling a while now with these
problem..
Best regards,
Ulli
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