Questions tagged [cost-path]

A raster-based ArcGIS geoprocessing tool that calculates the least-cost path from a source to a destination over a cost surface.

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120 views

Understanding how horizontal factor in ArcGIS Path Distance tool works? [closed]

I work with ArcGIS 10.1 (advanced license), and I am finding difficult to grasp how the horizontal factor works in the Path Distance tool. I have read the help documentation several time. These are ...
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1answer
172 views

Finding highest path of DEM or contours file within area using ArcGIS Desktop?

I would like to create a polyline from one specified point to a target point. In between, I'd like to the vertices to fall on the highest point of elevation of that Y coordinate. Essentially, this ...
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1answer
231 views

Empty or strange cost path output in ArcGIS 10.1

I´m trying to map green corridors between different stands of hardwood, using Spatial Analyst Cost path tool. I think my cost distance and backlink raster are OK, but the cost path output normally ...
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1answer
449 views

QGIS Least Cost Distance Points to Destinations via Roads

I have a layer of starting points (people's residences) and a layer of destination points (stores). I also have a roads layer with a cost field calculated from distance and speed of each segment. ...
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1answer
94 views

Automated mapping of cost paths from multiple origin points

I am currently mapping Lahar flows on Montserrat Island (as many have done before!). I have the Cost Distance analysis below, the circle is the origin and the triangle the destination. With a known ...
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1answer
379 views

Making least-cost paths to avoid specific land-cover types using ArcGIS Desktop?

I am going to calculate least-cost paths toward a number of location, implementing Tobler's hiking function (i.e., considering slope as factor influencing speed of movement). I want to make sure that ...
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1answer
555 views

Automating procedure to calculate least-cost path to destination locations from multiple source locations using ArcGIS Desktop?

I have 2 sets of locations represented by two point shapefiles in ArcGIS 10.1. My aim is to calculate the least cost path from each source location (let's call it A) to the destination locations (let'...
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1answer
59 views

Choosing coordinate system for cost distance route selection analysis?

I'm performing a cost distance route selection analysis for a type of linear infrastructure in Australia. The process I will use will be similar to this ESRI tutorial. The route will traverse several ...
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1answer
655 views

Road design using Least cost path by longitudinal slope in ArcGIS Desktop?

I have previously asked for help regarding this issue Finding least cost path in QGIS?, but obviously people do not know exactly the problem related to road design I used the least cost path, this ...
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43 views

How to create multi criteria cost surface - Slope reclassification? [duplicate]

I´m working on thesis aimed at investigating of possible routes and paths between Mayans cities in Guatemala. My thesis should help archaeologist to locate and reveal old paths in jungle and speed up ...
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96 views

How to create multi criteria cost surface - Slope reclassification? [closed]

I´m working on thesis aimed at investigating of possible routes and paths between Mayans cities in Guatemala. My thesis should help archaeologist to locate and reveal old paths in jungle and speed ...
1
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0answers
59 views

Minimum cost path on the whole globe?

I am trying to generate the maritime distance between seaports across the world. I am using the cost distance and cost path tool from ArcGIS to extract the shipping lanes from a raster file which ...
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1answer
82 views

Sites which can be reached in a certain time

I'm trying to analyse the sourrounding of an archaeological site in QGIS. Therefore I've created a cost map with r.walk in GRASS (cumulative costs range from 10939500 to 14211500). Is there anly ...
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1answer
243 views

Fixing ModelBuilder error? Error 010045: COSTPATH: The number of FROM cells is 0

I'm a beginner to ModelBuilder and I keep getting the error shown below. I keep getting the same error even when I convert point to raster: Error 010045: COSTPATH: The number of FROM cells is 0
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469 views

Finding least cost path in QGIS? [closed]

There are a lot of questions for this method, but does not fit in my case. I have designed a network of roads, manually, and this is optimal. Max longitudinal grade of roads is 12%. (These are forest ...
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81 views

What could replace the Traversability Index (TRAVERSE) from previous Fragstats versions?

I need to analyse the connectivity of wetlands, I believe that the Traversability Index from Fragstats is the one that best describes my intentions because it considers not only the ecological cost of ...
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1answer
44 views

What can be used to show a 'contour' of equal cost across a raster cost surface, radiating from a single point/line/polygon?

My challenge is to create a map showing the propagation of waves, similar to sound waves, from their source point, by marking 'contours' of certain intensity at predetermined distances. I have managed ...
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1answer
85 views

Using cost path in ArcGIS Spatial Analyst?

I'm new to using the Least Cost Path tool. I have a depth raster (tiff format) and I would like to calculate the cost path between two points close to the land. I need to "force" the tool to ...
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64 views

Working with varied slope impacts for a cost surface

I'm working in ArcMap and trying to create a Cost surface for movement through a terrain. I have values (speed in km/hr) for each surface type (tarmac, grass, forest etc). The problem is moving into ...
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1answer
277 views

C-based implementation of Djikstra's or Fast Marching for QGIS/Python?

I need an algorithm to find least cost paths between points on a discrete grid, allowing for the direction of transport to affect the cost of transport, allowing for different modes of ...
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1answer
635 views

Iterate cost distance/cost path over multiple points

I have multiple source points in one shapefile and one destination point in a separate file. I would like to find the least cost path from each source point to the destination point. My costs are ...
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0answers
111 views

How to create cost maps based on OSM (landuse/…)? [closed]

I'd like to create cost maps (georef raster) for cross-country hiking based on OSM from pgsql/postgis plus height data. Maybe by creating multiple raster-files and the later merging them (lake=...
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1answer
519 views

Finding multiple least-cost-paths for a network of several points using QGIS? [closed]

How can I find the least-cost-paths between a network of several points using QGIS or other easily available tools? That is, the easiest way to get from each point to every other point in the network, ...
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1answer
200 views

Performing least cost path analysis on QGIS using permeability scores for 60 points in network?

I have a map that is made up of polygons that apparently cover the whole area without leaving gaps, each representing a field, a wood, a road, a house etc. Each polygon has a score in the attributes ...
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0answers
81 views

Problems with Path Distance tool in ArcGIS [closed]

for the first time I run the Path Distance tool in ArcGIS but I guess something went wrong, and the process went into a loop. I needed to calculate the path distance to rivers. I use a rivers shpfile (...
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2answers
2k views

Tobler's hiking function in PathDistance ArcGIS 10.3.1

I am working on least cost paths for an archaeological project and I am trying to implement Tobler’s hiking function on ArcGIS 10.3.1 for Desktop. I am using SRTM 1 arc second global downloaded on ...
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1answer
1k views

Cost Distance Map in QGIS

My question is very similar to Cost Distance Analyst In QGIS? However, I'm looking for a means by which I can create a raster displaying the cumulative cost of each pixel to a specified destination ...
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1answer
140 views

GIS Least Cost Spanning Tree in R

Is there an R package/function that computes a least cost spanning tree given a shapefile or vector containing the latitude/longitude of each point and a raster file that contains the cost of ...
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1answer
39 views

Recreating maps from “The $50 American Road Trip”? [closed]

I would like to recreate for cities in my country the maps represented here, using ArcMap. On the same site I found the calculations, but I don't really know how to recreate those tables. After ...
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1answer
1k views

How to use the Grass modules v.net.xxxx from within QGIS

I'm trying to create a an area that can be reached within a certain amount of time/distance from a single (or multiple) points. To do this i'm using the GRASS tool v.net.iso (via the GUI). I've ...
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1answer
112 views

ArcGIS backlink raster incorrect

I created a small (4x4) cost raster with a 10m cell resolution, and used the ArcGIS Cost Distance tool to calculate the Output Distance raster and the Output backlink raster, assuming a single source ...
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1answer
251 views

QGIS: Grass Tools: Least cost path using r.drain generating flawed results

I am trying to use a combination of r.walk and r.drain in the QGIS grass plugin to model the most efficient path between two points, where cost is accumulated principally by movement over deeper water....
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1answer
100 views

Cost Path based on Lowest Maximum Elevation Encountered

I am trying to locate the lowest elevation point at which a river will overtop its banks, and spill into lower-lying terrain behind them. I'm working in ArcMap version 10.2, and using a high-...
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1answer
130 views

Find distances between points through a raster

I have a set of 79 points located overlaid on a raster that defines distance through coastal waters: each cell equals 100 metres, with NoData for coast and islands. I can use this raster to create ...
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1answer
78 views

Opposite of least cost path?

I've established how to run a Least Cost Path analysis in ArcGIS, but I'm wondering if you can run an analysis to find the hardest path between two points?
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1answer
709 views

How to get r.drain to run in QGIS/GRASS?

I use the GRASS GIS extensions for QGIS (QGIS version 2.12.3 with GRASS 6.4) and I have a problem with the r.drain algorithm: I simply cannot make it work with a given starting point as a vector point....
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1answer
149 views

ArcGIS Cost Path Analysis. How to extract the area covered by the many possible shortest paths?

As you can see in the picture ArcGIS Cost Path Analysis produces different results based on chosen direction (blue path direction: start->stop, red path direction: stop->start). As Cost Path ...
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2answers
526 views

Least Cost Path Distance to nearest polygon using ArcGIS Desktop?

I have multiple polygons (destinations) and an elevation raster. For each raster cell in my study area, I need to calculate the distance to the nearest destination polygon. If I use the 'as crow flies'...
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2answers
2k views

Least cost path between various points QGIS

Is there an easy way to find the least cost path (LCP) between various points in an open source GIS? This question has actually already been asked here: How to find a least cost path through several ...
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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, ...
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1answer
128 views

Alternative Least Cost Paths

I'm working on site accessibility. Having various locations, I can identify the LCP going from one to any other. So, by default, LCP calculation is giving me the first most least-cost path only. I can ...
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1answer
177 views

Changing way r.cost and r.drain modules work?

Look at the picture #1. This is my cost surface raster that has only 2 values. Area restricted for path to cross (red one) and area that is free to go (yellow one). As I need it and as I undestand how ...
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1answer
160 views

GRASS 7 Cost surface and elevation points development

I'm a new to GIS and I'm trying to develop an optimal path across an area by using GRASS 7 features. It is very similar to the task given here. The problem is that I don't have any data with ...
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1answer
295 views

What is the best method for route cost estimation? [closed]

What would be the best method for calculating a rough adhoc route cost i.e. a potential road (been some years since I have used Network Analysis in ArcGIS), alternatively would it be better using ...
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0answers
344 views

Least cost path analysis : a lot of sources and destinations

I'm working on a 15*10 km area, splatted in a 50*50 m cell grid. I want to compute the time needed to travel from a single starting point to each cell centroid, combining driving and walking time. I ...
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0answers
40 views

Capping the amount of a certain cost per route with Network Analyst

With the Network Analyst extension in ArcGIS 10.2, is there a way to set the maximum amount of a certain cost that a route must not exceed? For example, can I require routes to be below a certain ...
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1answer
800 views

Understanding Cost Surface algorithm in ArcGIS Desktop?

Based on this article "PDF: Extensions to least-cost path algorithms for roadway planning (Chaoqing, Jay, dan Mandy 2002)" (Click on link for PDF). Whether least cost path tool used in ArcGIS ...
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0answers
238 views

GRASS GIS r.walk issue

I have been playing around with GRASS GIS to do a simple cost analysis of getting from point A to point B. I have a DEM clipped to the study area, a raster containing the friction costs, as well as ...
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2answers
6k views

Cost Distance Analyst In QGIS?

Are there any tools, plugins or methods in QGIS which allows for an analysis of the best path between two points using least cost path method? As shown below ArcGIS has several distance tools.
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291 views

Euclidean Distance with Weighted Values

I am currently dealing with a dataset which consists of about 2700 points stochastically placed in a study area of about 650,000 sqKm. I am trying to create a distance raster for these points, which I ...