Questions tagged [cost-surface]

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Calculating true distance of cost distance raster using ArcMap

I have calculated cost distance using a raster unrelated to path distance (a heat index) but would like to also measure the true path distance of those 'routes.' Is there a way to calculate such? If I ...
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8 views

How to exlude raster cell from the cost surface estimation?

I use ArcGIS 10.1, I am trying to generate a cost surface (Path Distance tool) in order to generate a least-cost path. The problem is that I would exclude a specific area of the raster from the ...
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25 views

Isochrone estimating using ArcGIS Raster Calculator

I am using ArcGIS 10.1 and I am trying to use the contour tool in order to get isochrones on a time cost raster. The raster has been estimated in the raster calculator by summing the path distance ...
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23 views

Create distinct raster layers from ArcGIS Server Map

My original objective is to find the least cost path between two points. I am planning to do it with the "Cost Path" function of ArcGIS. Therefore, I have to construct a cost surface map for ...
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23 views

Combining cost analysis and voronoi-like area interpolation regarding slopes

I have DEM raster data of an island and I have 10 points (cities). My task is to map the island into areas. Inside these areas everything must be nearest to the corresponding city/point, and each ...
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2answers
82 views

Cartographic Depth-To-Water method using Cost/Path Distance

I'm having trouble understanding the method for creating a cartographic depth to water index and seek some guidance. I'm using ArcGIS Pro 2.3, but equally happy with ArcMap desktop. The method is ...
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17 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 ...
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21 views

Running Cost Paths with Overlapping Points?

I am running cost paths on a data set with 60k points which represent farms. About a third of these points have the exact same coordinate (points can often represent village centers where the farm ...
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2answers
159 views

Cost raster/friction map and data extraction

I am in an early stage of least cost paths analysis of a wide area. One part of the operation includes simulation of movement across the grid of previously agreed size of cells and extent of the grid (...
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1answer
77 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 ...
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1answer
54 views

QGIS r.walk.points Movement Directions raster exeeds input raster

I am very new to GIS, so excuse my potentially poor terminology. I am trying to create a cost surface in qgis. I have an raster with elevation data. Based on that I created a slope with the DEM ...
6
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1answer
327 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 ...
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2answers
171 views

Tobler's hiking function: resulting walking speed in KmH or m/s?

I was reading some literature dealing with least-cost path calculation and accumulate cost-surface generation using the Tobler's hiking function. I was reading this literature since I am trying to ...
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0answers
82 views

Integrating use of surface distance when calculating cumulative cost-surface based on walking pace?

Disclaimer This question is somewhat related to a number of earlier questions of mine: Accumulated cost surface (Tobler's hiking function) ignoring slope using R gdistance?; Calculating ...
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0answers
34 views

Assure the continuation of rivers (raster dataset)

I am creating a cost surface raster for identifying least cost paths for road constructions. One of the factors influencing the cost is water cover. I am using Landsat based Global Surface Water ...
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1answer
750 views

Understanding the values from transition layers produced by the R package `gdistance`

Background and Aim I would like to create a cumulative raster representing walking time across a surface. For my purposes, the cost to be accumulated has to be the walking time as influenced by ...
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0answers
205 views

Working out travel time from gdistance's conductance values in R?

Introduction This question is indirectly related to a previous post of mine (Calculating accumulated walking pace from starting location outwards using R?), but asks guidance about a different aspect,...
5
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1answer
108 views

Calculating accumulated walking pace from starting location outwards using R?

Goal In R, I would like to calculate an accumulated cost surface around a starting location, with the cost representing the time (say, hours) to walk from the location outwards in all directions (say,...
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0answers
272 views

Accumulated cost surface (Tobler's hiking function) ignoring slope using R gdistance?

Background I wish to calculate in R the isochrones moving from a location outwards, implementing the Tobler's hiking function via the gdistance package (https://cran.r-project.org/web/packages/...