Questions tagged [depression-filling]

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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
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1answer
114 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
884 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
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1answer
228 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
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1answer
119 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
798 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
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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
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2answers
639 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 ...