Questions tagged [depression-filling]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
0answers
12 views

Planchon & Darboux depression filling algorithm - Meaning of epsilon

I hope this is the correct place to ask this, but while trying to understand (and implement) the Planchon & Darboux depression filling algorithm, I came across a bit in the pseudo code I do not ...
0
votes
0answers
11 views

Combine depression filling and stream burning in one single step

As we know both depressions filling and stream burning will modify the DEM data. And I learned that sometimes we need fill-burn-fill to make the DEM is ideal for the follow-up steps. So can we merge ...
0
votes
0answers
12 views

How to find identify the best 'maximum search distance' while doing breach depression least cost using Whitebox?

I am trying to preprocess my DEM in GeoTIFF format using breach depression least cost algorithm of Whitebox tool and I need to provide an input value of maximum search distance for cells. How can I ...
1
vote
0answers
156 views

Raster map not found error with r.fill.dir

I am new the GIS world and I am having trouble with generating depressionless DEM from lidar elevation data. I am using GRASS 7.6.1 and QGIS 3.4.12. I have used r.fill.dir successfully on a ...
0
votes
1answer
261 views

ArcHydroTools FillSinks Error HRESULT E_FAIL in ArcMap [closed]

I'm trying to use ArcHydroTools in ArcMap 10.2.2 and this error always appears in the finish of the process: File "<stdin>", line 1, in <module> File "C:\Program Files (x86)\ESRI\...
3
votes
1answer
984 views

How to fill the empty space automatically, QGIS 2.16.3

Is it possible to fill empty space inside of polygon? I have problem, a clever boy drilled my polygons with road polygon,and I want to fill up polygons again, but how? I cannot merge every single ...
0
votes
0answers
212 views

Using Python to list all entries in numpy array that are lower than all adjacent values

I'm using ArcGIS 10.4.1, arcPy and NumPy. I'm trying to create a list of tuples that identify all entries in a NumPy array (DEM) who's value is lower than all adjacent neighbors (I.e. It's a ...
0
votes
1answer
256 views

r.fill.dir blocked

I am trying to fille a DEM downloaded by Geobolivia http://geo.gob.bo/. The r.fill.dir module in QGIS/GRASS toolbox blocked few minutes after I launched it for the DEM. It is very strange as, for ...
0
votes
1answer
121 views

Fast, simple assignment of flow directions to flats in GRASS

I have some enormously huge DEMs which I'd like to assign flow directions to. These DEMs are guaranteed to have no sinks, just flat areas. It seems as though the only ways of assign flow directions ...
6
votes
1answer
812 views

In hydrologic terrain analysis is there a difference between “pits”, “depressions”, and “sinks”?

In hydrologic terrain analysis is there a difference between "pits" and "depressions"? For instance, Planchon and Darboux (2002) state The usual numerical methods for removing the depressions of a ...
11
votes
3answers
2k views

Is there a difference between the Planchon & Darboux and Wang and Liu depression filling algorithms? Other than speed?

Can anyone tell me, based on actual analytical experience, if there is a difference between these two depression filling algorithms, other than the speed at which they process and fill depressions (...
5
votes
2answers
648 views

filling up a depression to create new surface

A collegue here has a problem I cannot help with. She has the surface (as raster) of a landslide release area (from AFTER the slide) and wants to calculate the calculate the theoretical/approximate ...