Questions tagged [least-cost]
The least-cost tag has no usage guidance.
0
votes
0answers
14 views
Making Cost Surface Distance map?
Projection is in NAD 83- units of measure in meters.
I have major roads NC vector data overlaid on Forsyth county in North Carolina.
I would like to create a cost surface distance map using this ...
1
vote
0answers
23 views
least cost path between multiple points: obtain a travelling time matrix based on cost raster
I'm new to GIS and would like to obtain a matrix with travelling times between multiple facilities. I already have a friction surface with travel times.
The plugin Least Cost Path seems to be very ...
0
votes
1answer
42 views
Cost distance tool to figure out shortest distance over water between 2 points
I have multiple points in a bay and I need to figure out the distance of each point to the nearest inlet, without going over land. I have been told to use the Cost Path or the Cost Distance tool but ...
0
votes
0answers
52 views
Slope rasters - different results from different tools
I'm calculating Least Cost Path (LCP) within QGIS 2.18. The first step is to produce the slope raster from the DEM. Using r.slope in GRASS produces excellent results where I can go on and finally ...
1
vote
0answers
62 views
Finding Least Cost Corridor in QGIS? [duplicate]
Does the ArcGIS Pro feature "least cost corridor" have an equivalent module or workflow in QGIS?
http://pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/creating-a-least-cost-corridor.htm
6
votes
1answer
167 views
How can I estimate a Least Cost Path in Google Earth Engine?
I'm using Google Earth Engine to estimate walking time based on slope, using the Google tutorial and this example based on a DEM. My code actually runs, but I don't know what units the output raster ...
0
votes
0answers
33 views
Specifying width of least-cost path in ArcGIS Spatial Analyst?
I am performing a least-cost path analysis using ArcMap in an area with high slope variation. I am working with a 0.5x0.5m raster to prevent generalization and elimination of danger slopes. I need a ...
2
votes
0answers
296 views
how to calculate cumulative cost of movement, accounting for wind direction, in R?
I am trying to reproduce the calculation of the duration of sail-powered navigation as described in an academic article (http://www.tandfonline.com/doi/full/10.1080/15230406.2017.1403376), but using R ...
2
votes
1answer
3k views
Finding Least Cost Path in QGIS?
I'm trying to work out least cost paths in QGIS. I have a DEM and a slope raster extracted from it, and a set of points, between which I want to find the least cost paths. I can find a SAGA plugin, ...
