Questions tagged [slope]
Use this tag when asking questions related to slope analysis.
385
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Calculation of the average slope of the tractor path through the forest
I am currently working on a project whose task is to determine the average slope (in % not in absolute value but with a positive or negative sign -> rise or fall) of tractor roads located in a ...
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ArcGIS Pro Slope Tool failing with Output measurement and Z factor parameter in C# [closed]
The code below with 3 parameters fails to run slope tool and get expected result. No error is shown. Just expected result doesn't come out.
public SlopeTool(string inRaster, string outRasterName, ...
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LiDAR DTM slope slope analysis with a twist. Calculate elevation changes of at least 10 feet within horizontal distance of 25 feet
I have raster DTM image of LiDAR data, mapped to Washington state plane north (US survey feet), where each pixel represents an elevation value in feet.
Generating a "slope map" which shows ...
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Make a slope-aspect map and create a circular legend for it in QGIS
I'm working on Terrain analysis of my ROI and could compute aspect and slope separately. Although I found a fairly easy tutorial on how to make a slope-aspect raster, I want to know if it's possible ...
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Combine Slope and Aspect of a DEM for suitiable PV-Powerplants
I want to get areas for PV-Powerplants via QGIS.
I used the solution under Filter for south pointing areas from a DEM for extraction of the areas which are not facing north (60-300°).
But I need ...
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Using DEFRA LiDAR dtm-1m to calculate slopes etc in QGIS
I have a shapefile of woodland polygons and want to calulate slope and slope orientation of the polygons.
I am using the LiDAR Composite Digital Terrain Model (DTM) - 1m in QGIS. Available at: https://...
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QGIS Slope: Slope processing tools not working as expected using DEM
I have a NRCS 2M DEM Bare Earth file for which I have already successfully applied the Hillshade and Aspect tools in my QGIS v3.34.1 project (see below).
Now I am attempting to determine slope using ...
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92
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Calculating dredged material volume with sloped trapezoidal geometry using bathymetric data in QGIS
I have bathymetric data (as a point layer) for an area slated for dredging, where the target depth is -4m relative to Chart Datum. I have a polygon outlining the dredged area. The post-dredging ...
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QGIS and percent values in slope map
I create a slope map from a DEM downloaded with SRTM Downloader in QGIS 3.32.0-Lima. I searched in the internet trying to find the way to interpret the values of the left column in percent. For ...
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Cross-slope of a trail in ArcGIS Pro
I am trying to make an accessible map that includes the typical and maximum slope and the typical and maximum cross slope. I understand how to determine the elevation profile of the trail, but it is ...
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178
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Generate shortest straight path between points and a given elevation in QGIS
I'm trying to do terrain analysis in QGIS.
I have a vector layer with equally spaced points along a slope, and these points are somewhat parallel to the coastline of a fjord:
I'm interested in ...
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160
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How to interpret values of elevation standard deviation statistic (and not elevation mean) from DEM
I am trying to interpret the standard deviation of elevation to understand the topographic landform of my study area.
We have 2km*2km grids in the study area for which we extracted certain landscape ...
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58
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Adding slope to lines drawn using PyQGIS
I want to add a slope to lines drawn using PyQGIS. The lines drawn with PyQGIS are currently green, but I want them to appear brown. How can I achieve this?
The code I wrote:
import math
from qgis....
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34
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Identical values of bathymetric data
I downloaded gridded bathymetric data from GEBCO, from which I calculated a slope map using QGIS and then examined the resulting values using the 'raster layer unique values report' function. I found ...
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QGIS Least Cost Path Analysis taking forever
I have been trying to calculate the Least Cost Path (LCP) between two points on my map. These points are approximately 100km apart. I have created a slope from my DEM raster, created proper vector ...
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