The slope of a line or surface is a numerical measure of steepness or incline.
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0answers
17 views
Slope tool error when running from arcObject add-in tool
My problem is related with Global DEM to Slope calculation. The slope tool works when raster is projected or the map is projected where the raster is added. And also, if the raster and map both are ...
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1answer
51 views
Error while creating a slope [duplicate]
I have a elevation raster (1 arc second) downloaded from USGS site. Before adding it to ArcMap I changed the display units to meters.The projection system for this raster is GCS_1983. When I use the ...
3
votes
1answer
75 views
Compute global DEM topographic indices and compromise projections
I would like to compute global topographic indices based on SRTM elevation data. These indices are computed along river/channel networks extracted from a DEM and are a functions of both local slope ...
3
votes
1answer
61 views
Wrong direction in r.watershed slope length calculation?
Or have I completely misunderstood something now? As a programmer I took it for granted that the row number would change if I traversed the map up and down in the program along the North-South axis ...
3
votes
2answers
80 views
How to calculate changes in slope angle between cells/areas?
I am doing an estimation of erosion with ArcGIS. I use the UniversalSoilLossEquation (USLE) for this.
Now, i want to calculate the L-factor of this equation. I need the FlowLength for this. My ...
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votes
3answers
229 views
Calculating mean slope: Harmonic or Arithmetic Mean?
I have to calculate the average upslope percent slope for a large dataset, the basic method is detailed here. However, I've begun to wonder if harmonic mean might be more appropriate than the ...
3
votes
1answer
50 views
What function should I use to assess the degree of elevational change (rocky cliffs etc.) of a DEM?
I have a DEM of my research area and I want to assess how the topography/elevation changes. I am specifically looking to see what areas may be good suitable bat-roosting habitat so I am trying to ...
2
votes
2answers
387 views
Can I create a TIN from contours lines (shp) in QGIS?
I need to do a slope analysis, and would like to make a TIN from 2m contours lines. Or do a slope analysis directly from contours? The only DEM available is not precise enough. I do not have any ...
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votes
4answers
130 views
Error When Trying to Run Slope Analysis Script
I have written a script which is supposed to loop through all the rasters in a folder and perform a slope analysis on each raster and save the results in another folder.
I keep getting the following ...
3
votes
1answer
137 views
Calculating Mean Upslope slope, curvature, etc
I'm trying to generate rasters whose values summarize the mean value of a given parameter (slope, curvature, etc.) of the upslope terrain. I feel like this should be doable using only a flow ...
