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Tagged with flow-direction grass-gis
5 questions
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0
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55
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Running grass7:r.watershed in QGIS gives different results to running identical process in QGIS
a former colleague created a QGIS tool in Python for the Team which creates Flow Routes and TWI (Topographic Wetness Indicator) maps for a selected location.
I have run through the code and copied the ...
- 21
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Exporting ldd raster from grass to PCRaster fails
I successfully exported Float32 SCALAR data with
r.out.gdal input=$file output=$file.map format=PCRaster type=Float32 createopt="PCRASTER_VALUESCALE=VS_SCALAR"
but for ldd data (previously ...
1
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1
answer
357
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Why some flow direction cell of GRASS r.watershed have no data value?
Using r.watershed inside QGIS, I am getting no data value along some streams for flow direction.
I tried the r.fill.dir and for the same raster it does not give any no data value for the same cells (...
- 1,830
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1
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-32768 in flow direction values of Grass GIS
I was checking the values of a flow direction tiff created with Grass GIS and the values were:
-32768, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8.
This answer explains clearly the meaning of the values ...
- 41
7
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2
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2k
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Compute flow accumulation only from flow direction?
I am looking to calculate flow accumulation from a flow direction raster. In ArcGIS there is Flow Accumulation (http://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/flow-accumulation....
- 505