Questions tagged [isochrone]
An isochrone is a line on a diagram or map connecting points relating to the same time.
84
questions
4
votes
1answer
38 views
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 ...
4
votes
2answers
186 views
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 ...
5
votes
2answers
144 views
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 ...
0
votes
0answers
13 views
Isochrone mapping with different speeds using ArcMap Network Analyst
I'm trying to create an isochrone map using ArcMap Network Analyst (Service Area). The catch is that I want it to be travel time accurate according to each class of road's allowed speed
What would be ...
2
votes
0answers
58 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 ...
0
votes
0answers
40 views
Isochrone QGIS - experiences
I'm currently working on reachabilities (isochrones) to certain locations in QGIS. So far I've tested the ORS plugin and the Hqgis plugin. Now I'm looking for a way to calculate the boundary of ...
0
votes
0answers
51 views
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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0answers
40 views
Mapping origins and destinations to the generated isochrones in R
I created isochrones in QGIS using Iso-area as polygon algorithm with an interval of 30 minutes. I exported isochrones as a geopackage file and read it into R using st_read() function. I also have ...
1
vote
1answer
53 views
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?
2
votes
0answers
43 views
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 ...
0
votes
0answers
22 views
How to make nonoverlapping polygons using QNEAT 3 [duplicate]
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 ...
4
votes
1answer
81 views
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 ...
3
votes
2answers
182 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 ...
0
votes
0answers
59 views
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 ...
1
vote
0answers
34 views
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 ...
2
votes
1answer
43 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 ...
1
vote
1answer
102 views
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 ...
2
votes
1answer
310 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 ...
0
votes
2answers
170 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,...
1
vote
1answer
175 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/...
0
votes
0answers
49 views
Routing algorithm for generating isochrones using open route service
I am looking for a suitable tool for generating isochrones. I need to know the routing algorithm which is used by the tool that I will generate the isochrones using it. So I would like to know what is ...
1
vote
1answer
43 views
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 ...
0
votes
1answer
186 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 ...
2
votes
1answer
126 views
Isochrones for emergency vehicles
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 ...
1
vote
1answer
283 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 ...
1
vote
0answers
42 views
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 ...
2
votes
2answers
275 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 ...
1
vote
0answers
63 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 ...
0
votes
1answer
43 views
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....
1
vote
1answer
47 views
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 ...
1
vote
0answers
115 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 ...
1
vote
0answers
69 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 ...
2
votes
1answer
102 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 ...
2
votes
1answer
923 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....
2
votes
0answers
88 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 ...
2
votes
0answers
140 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 ...
3
votes
0answers
63 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 ...
1
vote
0answers
34 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 ...
4
votes
0answers
64 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?
...
3
votes
0answers
527 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 ...
3
votes
2answers
314 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 ...
6
votes
1answer
1k 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 ...
2
votes
1answer
95 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,...
2
votes
0answers
88 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 ...
3
votes
1answer
576 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 ...
1
vote
0answers
168 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 ...
0
votes
0answers
34 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 ...
3
votes
0answers
161 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....
1
vote
2answers
456 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
'...
6
votes
1answer
466 views
Displaying (or filtering) features in one layer based on features selected in another
I have points in a layer "Site-Centroids".
I generate a lot of isochrones (polygons) around them, into "Isochrone_Site-Centroids".
With all the isochrones displayed, the map is too busy.
What I ...
