Questions tagged [isochrone]

An isochrone is a line on a diagram or map connecting points relating to the same time.

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Qgis QNEAT3 Plugin execute error

I have an problem running Iso-Area as Polygons. *Traceback (most recent call last): File "C:\Users/Ivan.Ivanov/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QNEAT3\algs\...
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3 votes
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QGIS QNEAT3 Iso-Area Polygon not creating polygon or data

I am trying to calculate distances from parks in a small part of town. I have road centerlines (MultiLineString) and park entrances (Point) and want to use QNEAT3 to create iso-areas as polygons ...
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Iterating over layer features when using ORS Isochrones in QGIS Model Designer?

While using the ORS Isochrones from layer-tool in QGIS there is a button next to the input layer that allows for iterating over each feature in the layer to ensure that the isochrones for each point ...
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64 views

OSRM Isochrone - straight/square edges

I am calculating 1 hour cycling distance using osrmIsochrone in R and Docker. I have noticed that the polygons have square/straight edges. (see below example) Increasing the res even to high values (...
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3 votes
2 answers
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Dissolving isochrones from point layer in QGIS

I have created a set of isochrones (3, 5, 10 minute walk times) from a point layer. I now want to dissolve the layer to make it more readable. However when I try to dissolve based on the field that ...
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Reverse-engineering a drivetime map

I recently came across a map on a Reddit site showing the closest MLB stadium by drivetime across the US. I've seen maps before that show a polygon around a point that represents a given driving ...
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4 votes
1 answer
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Aggregating isochrones with accessibility values in QGIS

I have created a series of isochrones for public transport, for the bus, tram and train, with a 5 and 10 minute walking range. Now I would like to aggregate these values to show which areas are most ...
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5 votes
2 answers
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Add virtual field for vehicle speed to OSM roads (tag='Highway')

I want to add additional speed values to my OSM data. There is a maxspeed value for some of the roads, but a lot of values are 'null'. Therefore, I would like to add additional values based on the OSM ...
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2 answers
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Where should I add the API key in ORS Tools?

I want to make an isochrone for my halte and station points. But I have to configure ORS Tools with my API key. The problem is, I can't find any configuration button in my ORS Tools plugin. How should ...
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2 votes
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61 views

Difference in the shape of polygons

I created isochrones using Iso_area as polygons algorithm of QGIS. I created the green polygon feeding the algorithm with the speed field of the road network. Then I created the blue polygon using the ...
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The proportion of population covered by created isochrones in QGIS

I created isochrones using Iso-Area as polygons algorithm is QGIS. I would like to calculate the proportion of the population covered by the created isochrones. Is there any tool in QGIS to do this?
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Calculating the area covered by isochrones in QGIS

I created isochrones using Iso-Area algorithm as polygons in QGIS. Is there any tool in QGIS that helps with calculating areas covered by created polygons?
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2 votes
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How to dissolve overlapping distance isochrones

For my master's thesis I need to create distance isochrones (10/20/30/../100km) around certain coordinates. In my case they overlap and I want the overlapping parts to dissolve, but at the same time ...
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5 votes
1 answer
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Making nonoverlapping service area polygons using QNEAT3; service area polygon errors

I am doing a project in which I am determining which areas of New York City can be accessed within a five- or ten-minute walk of a subway entrance. I have done this in the past in ArcGIS, and am ...
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4 votes
2 answers
300 views

Why do I get gaps in the isochrones polygons with ORS tool in QGIS?

I am trying to represent isochrones from a points layer using ORS Tools in QGIS 3.8.3-Zanzibar. Does anyone know why there are some gaps in the resulting polygons, even though the road, according to ...
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Mapping origins and destinations to the created isochrones in QGIS

I created isochrones in QGIS using Iso-area as polygon algorithm with an interval of 30 minutes. I have some coordinates related to some origins and destinations. I need to map these origins and ...
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HERE Isoline API V8 doesn't account for traffic

I am playing with HERE Isoline API v8.4.0 and it works pretty well. The documentation mentions that setting departureTime parameter will include traffic in isochrone calculation. However, the results ...
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2 votes
1 answer
51 views

How to build isochrones with GeoTools?

It is possible to compute shortest paths with GeoTools with its graph package. Is there a package (or extension) for computing isochrone lines or areas, that is the area which can be reached from a ...
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1 vote
1 answer
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Created isochrones are not displayed (QGIS QNEAT3 Iso-Area as polygons algorithm)

I am trying to create isochrones using Iso-Area as polygons algorithm in QNEAT3 plugin. I choose the fastest past as the cost strategy. when I use the default speed to create isochrones the output ...
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  • 379
3 votes
1 answer
559 views

Accessibility analysis using isochrones and network analysis tools QGIS 3.16

So I made an isochrone using ORS Tools plugin, as well as using the Network analysis toolbox to analyze the service area of the bus stop. Ultimately I want to provide a statement of X% Area covered ...
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2 answers
263 views

Calculating isochrone for linestring

I have seen APIs and algorithms for calculating isochrones for a single point, e.g. https://openrouteservice.org/dev/#/api-docs/isochrones. Is it possible to calculate the isochrone for a line segment,...
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1 vote
1 answer
306 views

Creating multiple points on Mapbox Isochrone map

Is it possible to create multiple points on an isochrone map in Mapbox? This is the documentation for one of their maps with one point: https://docs.mapbox.com/help/tutorials/get-started-isochrone-api/...
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1 answer
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Iso4app parameters in QGIS

In Iso4app QGIS plugin, in the isochrone parameter window, how speed type and speed limit work? do they work based on the maximum allowed speed of the roads? or if we determine a speed level more than ...
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349 views

QNEAT3 plugin and Iso-Area polygons

I need to generate isochrones considering emergency vehicle’s speed. I have checked several packages in R and different plugins in QGIS. I found QNEAT3 (Iso-Area as polygons) as the only tool that the ...
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  • 379
3 votes
1 answer
173 views

Isochrones for emergency vehicles using QGIS

I need to generate isochrones for emergency vehicles. Is there any possibility of QGIS to do this? I checked TravelTime and QNEAT plugins but unfortunately, I could not find any way. With TravelTime ...
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  • 379
1 vote
1 answer
351 views

Issue with osrmIsochrone function in R

I have been using osrm package for a while and didn't ever come across this kind of issue before. It looks so weird and I have been trying to update package and reinstall R as well. But nothing is ...
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1 vote
0 answers
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Seeking plugin for QGIS to create iso-distance polygons longer than 120km

I'm new on QGIS and I have been using the ORS plugin to create isochrones and iso-distance polygons. However, through Openroute Service I cannot create iso-distances longer than 120km. Is there any ...
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2 votes
2 answers
417 views

Isochrone along direction map of watershed

I am interested in producing a isochrone map given a raster speed map and a direction map (like the output of r.watershed), but I do not see how to produce it. I have studied r.walk and r.cost wich ...
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1 vote
0 answers
71 views

Creating isochrones in a travel-time map

I'm working on building a travel-time map using time-expanded model and Java. I calculated the reachable points with Dijkstra's algorithm from a start point and within a specific travel time and I ...
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1 answer
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Populate field with drive time values during isochrone creation in Carto

I'm creating isolines (isochrones) in Carto to show 15, 30, 45, and 60 minute drive times from a set of points in a shapefile. Here is the SQL I've written to create those isochrones in an empty table....
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1 vote
1 answer
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Iso-Area jumping over parts without streets (QGIS QNEAT3 Plugin)

I am using the QGIS Plugin 'QNEAT3' (version 1.0.4) to calculate Iso-Areas. They are only relevant for me in one country, so I only have this country's street network. But the Iso-Areas are jumping ...
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1 vote
0 answers
140 views

Finding nearest POIs by travel time(not distance) given current location and travel method

A user can choose between walking, bicycling, public transit, or driving for X minutes. Their current location is a latitude and longitude pair given by the HTML5 Geolocation API(wgs84). The (roughly ...
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0 answers
85 views

Weird behaviour when intersecting polygons in python Shapely

I'm using shapely to get the intersection between an isochrone polygon and a restriction area my car can't leave. I have a list of restriction areas, some of which overlaps by little, making it harder ...
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2 votes
1 answer
129 views

90 minute isochrones in QGIS

I recently discovered QGIS. The software is very impressive, even if it is not always easy to know how to unlock the features. This article provides good pointers, although I can't make it work. I ...
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2 votes
1 answer
1k views

Using OSRM to create isochrones in R potentially problematic at < 10 minutes drive time?

I'm working on creating isochrones in R using osrm, and I keep finding problems with 0-10 minute travel times. Here's some code I've been using to test with a hand-picked test location: install....
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2 votes
0 answers
104 views

How to generate 5h-isochrones?

I'm very new ot the GIS world, but I suddenly need to generate isochrones from several points with time ranges up to 5 hours. I managed to use QGIS and the ORS plugin to generate nice isochrones, but ...
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2 votes
0 answers
147 views

ArcGIS Online producing isochrones which are skewed North-South, is there a way to fix this?

I am trying to run an isochrone analysis in ArcGIS Online using Analysis > Use Proximity > Create Drive-Time Areas. The resulting polygons are stretched North-South, I suspect this is due to ...
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3 votes
0 answers
67 views

Create isochrones of 5 hours plus?

I am carrying out some work, and my client requires isochrones generated between 1 and 9 hours (daily driving limits in EU). I'm scratching my head at the moment trying to find something that could ...
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1 vote
0 answers
55 views

Travel Time Isochrone Map - Http Post request [closed]

I am trying to send a request to Travel Time Platform for an isochrone using the API - https://www.traveltimeplatform.com/ // Coordinates for Manchester Central Foodbank in Lat Lng var ...
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5 votes
0 answers
69 views

Create isochrone along a given road

I want to solve this problem : given a departure point given an arrival point given an amount of time In which areas can I go while coming from departure to destination in the given amoint of time? ...
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3 votes
0 answers
655 views

Get Isochrones for Public Transport in QGIS

I'm using QGIS and trying to get public transportation isochrones in Montreal for 20, 40, and 60 minutes. I was able to use the ORS plugin to do the same for cars, walking and cycling in the area. I ...
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3 votes
2 answers
396 views

Calculate the travel time from locations to the closest N points

I want to calculate the travel time (based on walking time) from locations to the closest N points of another dataset. Then I want to create a hull around those N closest points per location Is this ...
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6 votes
1 answer
2k views

Creating isochrones in QGIS using QNEAT3

I am trying to make transport accessibility map in QGIS, using QNEAT3 plugin to build isochrones. I need to make a map, that shows 30 minutes area of accessibility with 5 minutes interval zones. I am ...
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2 votes
1 answer
119 views

GRASS 7.6 v.net.iso not providing output in QGIS 2.18

There are simply two layers in EPSG:31469 both are located on the Server side, see image below: points 'HST_Bestand_GK5' polylines 'vwESKN_1_25000_Teil' On my Windows 10 with QGIS 2.18 and GRASS 7.6,...
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2 votes
0 answers
100 views

QGIS Network Analysis Control and Plugins

I am trying to create Isocrones in QGIS for network analysis. I am able to accomplish this using the plugin ORS Tools from my transit stop using a drive time of 5-, 10-, and 15-minutes. However, the ...
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  • 153
4 votes
1 answer
984 views

Performing isochrone in PostGIS by pgRouting?

In pgr_drivingDistance for isochrones the person who answered, missed to say the explanation of the answer about what function used by him to get the output for isochrone. I want to do the same but I ...
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1 vote
0 answers
203 views

QGIS v. ArcMap Network Analysis Isochrones [closed]

I am looking at developing catchment areas based on a street-lines feature class against various bus stops to find an ideal catchment area which can then be converted and run in a simulation. The ...
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  • 153
0 votes
0 answers
40 views

Isoscope, but for distance

An isoscope shows me how far I can get within a specific amount of time. Is there a similar visualization that shows me everything within X distance by roads of location? If so what would be the ...
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3 votes
0 answers
181 views

Automatisation of isochrone map creation in QGIS 3

I need to measure the area of isochrones for a big number of points, for different time thresholds and for different means of transport. I've been using the plugin isochrones in OSM tools with QGIS 3....
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1 vote
2 answers
605 views

Service Area or Catchment Area in R

I'm trying to find an R package to duplicate a specific bit of functionality of the ESRI network analyst: What ArcMap refers to as 'Service Areas'. Related terms include catchment areas isochrones '...
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