Questions tagged [map-matching]
"Associates a sorted list of user or vehicle positions to the road network on a digital map."
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Correct routing, but incomplete map matching with own Valhalla server
I installed Valhalla from gis-ops docker image (version 3.3.0 on Doker Hub, default options, latest Europe data from Geofabrik.de). Routing seems to work fine, however map matching isn’t quite as ...
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Map matching with sDNA?
I have a series of walking traces that I need to link to a walking network. So far, the matching algorithms available as plug-ins for QGIS (Offline Map Matching, Assisted Map-Matching) have yielded ...
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How to workaround OSRM map match {"message":"Too many trace coordinates","code":"TooBig"}
I have created a web page to test OSRM map match service (running locally in the latest osrm/osrm-backend docker image), before starting to integrate it into my app.
And when sending just 4 locations (...
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Retrieve map matched ways (and not just nodes) using OSRM and Overpass API
For my question I have prepared a jsFiddle demo requiring you to click at the map 5 times:
If I understand this correctly, the OSRM does not care about ways.
It only cares about nodes and their ...
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1
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Nodes returned by OSRM map match service not found in the PostGIS database
The call to OSRM map matching returns a list of nodes:
{"code":"Ok","matchings":[{"confidence":0.000854076,"geometry":{"coordinates":[[8....
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278
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How to get way ids from the OSRM map matching service
Calling OSRM map matching returns coordinates and nodes:
{"code":"Ok","matchings":[{"confidence":0.000854076,"geometry":{"coordinates":[[8....
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Route Mismatch Fraction (map-matching)
Is there a Python (or another language) implementation of a function that has as an input a map-matched trajectory and a ground-truth trajectory and calculates the Route Mismatch Fraction that is ...
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2
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290
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Preprocessing OSM for Valhalla Meili
I'm a complete noob when it comes to OpenStreetMap and open-source map matching. I want the collective wisdom of more experienced user to evaluate whether a certain approach is doable. I'll first ...
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OSRM ignoring roads without empty names
I want to ignore all roads that have an empty 'name' field when running match in OSRM. I have looked through the documentation, including the profiles, and cannot seem to figure it out. Is this ...
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Matching/Joining Photos to two fields and a fuzzy time
I have a directory with around 100,000 images sorted by the crew that took the photo and the time it was uploaded. I also have a master spreadsheet with the dates the images were taken, the camera's ...
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141
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Extract information from OSM given GPS point
I have a little problem with the extraction of road information from OSM.
I explain my setup: I have several GPS points, extracted every 1 sec and the final goal is to extract information about the ...
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Join (map-matching) observations to roads
I know that the subject is wide, but I could not find answers to my problem. I have to shapefiles: Roads(c.a. 580 rows and divided into three categories of roads) and observations (detected speed ...
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478
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Map-matching. Join points to lines
I have about 16000 points with speed on the roads and some roads (lines). I need to join points to lines and their attributes so that there are speed values from points in the line attributes. I have ...
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189
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MapMatching using GPS data
I have GPS data from multiple users and multiple routes and I'd like match them into the actual route using QGIS, because there are some outline points.
My data is a csv file with 2.989 points, ...
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260
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Raster stack different extent for same site?
I have rasters for the same area (same polygon) but I am not sure why they have different extent. I had an supervised classified layer of the initial DEM and secondary variables that do not match the ...
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235
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Count number of overlapping map matched GPS trajectories with road network
I map matched a sequence of GPS-points to a road network using the Offline-Map Matching plugin for QGIS. This map matched trajectory passes certain roads segments multiple times (for example, the ...
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Get Corresponding OSM Node IDS from list of Lat,Long (CSV): Map Matching
I have a list of (lat,lng) coordinates. I want to map match them and get their corresponding OSM node ids? How can i do that using OSRM or any other map matching algorithm?
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Loading JSON data in QGIS and matching it with GeoJSON layer on `id`
I am new to QGIS and I'm trying to add a JSON file with data to a GeoJSON layer by using the same "id" they have in the "properties" field.
I have a GeoJSON file with ids:
{
"type": "...
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Correction of GPS-Track, snap to road (line, network)
Problem as shown in the image:
I like to correct the GPS track (orange) to the right road (black).
In a network of roads it is difficult to snap to the right path - for human it's obvious which one ...
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248
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Offline Map-Matching freezes
I am using Offline Map-Matching and the process always freezes at the same time (8% of calculating transition probabilities, as shown on the image):
I get no messages and have no idea what could be ...
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756
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Map Matching (snap GPS points road) in ArcGIS (REST API)? [closed]
Does ArcGIS have Map Matching function? (In Google Maps Services it's called "Snap to roads" - https://developers.google.com/maps/documentation/roads/snap)
I checked next link, but didn't find ...
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Identify OSM road ids based on coordinates
I have a trace of GPS coordinates. I would like to get the OSM road ids of the roads that lie on the route defined by the coordinates.
I've used OSRM match service to match the coordinates to the ...
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227
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Aligning or integrating features from two feature classes using ArcGIS Desktop?
I am trying to align two line feature classes (street networks) that have been digitalized differently - see picture. One is more spatially accurate and has the attributes I need (A) and the other one ...
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Free Map matching benchmark data
I have my own map matching algorithm and I want to compare it's accuracy to some other algorithms. Is there a free trace dataset that has a confirmed match for each trace (ground truth), so I can ...
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Projecting GPS point to point in closest pgrouting road (map matching)?
I'm quite new to PostGIS and pgRouting.
I'm interested in doing a simple map matching. Precisely, finding the closest point in a given OSM road network.
I’ve successfully imported the OSM network ...
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78
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User tracking on a defined route
I am having a vehicle route with a set of latitude and longitude values. User need travel on the specified route, If user deviates from the route (greater than 100 meters), we need to identify in ...
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Two geometries not at same place
In the picture1 shown there is a linestring which is Area2 and a buffer of linestring which is Area1. I want to include Area2(linestring in picture) in the buffer but I cannot increase the size of the ...
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Correcting inaccurate position coordinates
How to project the journey onto the street?
The black polyline is inaccurate GPS data received from a mobile device, which positions the user trajectory inside the buildings, when it was actually on ...
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4
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1
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108
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Matching two types of data (elevation and imagery) which are in different scale?
My problem is that elevation and imagery data I'm getting from USGS is in different scales and is aligned to different grids. I don't want to match it manually in Photoshop.
Does QGIS know how to ...
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Join two Shapefiles based on common fields to create new polygon Shapefile?
I have two shapefiles as shown in attached picture:
Buildings footprint (polygons) which includes house number and street name beside other fields.
Red shapes (polygons) which include house number ...
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Matching paths based on both GPS pathways and the respective time recorded
I have two database tables containing individual lat-long records of vessels moving around in waters for a given time period:
Database A contains a set of records of a particular type of vessel that ...
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415
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Map matching of one sided road data to two sided road data
we use BOS method (Goodchild and Hunter,1997) for checking the positional accuracy of test map dataset by buffering around the reference dataset and then check for percentage coverage of test dataset ...
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Find a linestring closest to a given linestring
There must be already a solution to this problem - let's say we have five different linestrings. They might intersect or not. Given a sixth linestring, how do we find which one of the original five ...
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291
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How can I match Geolife traces using TrackMatching or similar tools?
I am working on route prediction and I decide to use realistic trace of moving object, I have choose geolife dataset
it is composed of 278 users and every user has its trips presented in GPS or GPX I ...
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678
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Point layer to route
So, in QGIS I'm trying to apply the script "Point layer to route".
(See this website for a general idea about the script: http://anitagraser.com/2013/10/19/a-routing-script-for-the-processing-...
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Using R to map matching GPS data? [closed]
I have many vehicles GPS data points, which consist of "timestamp, longitude, latitude, fuel consumption and distance" and the data is OSM(open street map) based. I want to match the data points to ...
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Calculating emissions from points in road network using ArcGIS for Desktop?
I have GPS data (X,Y, speed, CO2 and fuel consumption) for one truck for one trip. I want to import them in ArcGIS and to join them with the road network (map matching). I was thinking of applying "...
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563
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Graphhopper Map-Matching looses time attribute
I try to use the Graphhopper Map-Matching. My GPX source file looks something like:
<?xml version="1.0" encoding="UTF-8"?>
<gpx version="1.0" creator="GPSBabel - http://www.gpsbabel.org" ...
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Plotting points into segments on roads exactly with ArcMap?
I have a set of data (see the table below) which has an origin lat and long and destination lat and long with speed. I just want to plot lines between the origin and destination, and color code them ...
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Map matching a stream of GPS points to possible bus routes & C# map matcher [closed]
I have streams of GPS points that are transmitted from a device aboard a bus in real time. I would like to use these points to infer which route the bus is following. I have routes stored as GPS point ...
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232
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match noisy GPS data to closest linestring in road network [duplicate]
I have some noisy GPS data(Points) that they are not exactly on the road because of the noise. But I want to match them to the closest road linestrings. How to do this in PostgreSQL?
Data: ...
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Make a line from a set of GPS points close to a specific GPS point with PostGIS
I have to develop a map-matching algorithm. At the moment I only match GPS points with the closest road segment. I'm looking for a way to compare the directions between a GPS point and a road to ...
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Is there a way to transform a node OSM point into the reference GPS system of a car?
I have a car with a GPS (WGS84) and a camera (who shot the road) fixed on it. I would like to know is there is a way to get the transformation from a OSM node to the GPS Cartesian coordinate fixed on ...
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Matching GPS points to the road network
I am a newbie in Postgres and Postgis and I am trying to do a matching of GPS points to the road network. I need to find closest road from a shapefile and take speed attribute from it. I am using ...
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Getting time taken for the edge using GraphHopper map matching
Here is the GPX data I am giving to GraphHopper Map matching library:
private List<GPXEntry> getList()
{
List<GPXEntry> sampleEntries = new ArrayList<GPXEntry>();
GPXEntry ...
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open-source code for the map matching algorithm
For map matching of the GPS data to the network data, there is a algorithm from Schussler, N. & Axhausen, K. (2009a).
Is this algorithm released under open-source license ? Where can I find this ?...
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5k
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Map-matching GPS points to the road network!
I am quite new to Postgres and PostGIS.
I am trying to do a simple map-matching (or path-inference if you wish) of some GPS points. I am using postgres(postgis).
I have a table in my database ...
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2k
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Mapping raw GPS data to Openstreetmap's Node/Way/Relation [closed]
I have a bunch of raw GPS data points which constitute trips.
I want to add semantic information to those data points. For example I'd like to be able to say that a trip consisted of taking street A, ...
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536
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Comparing compass bearings
I have several compass bearings:
bTrue = 190°
b1 = 250°
b2 = 100°
b3 = 170°
b4 = 90°
I want to compare b1 - b4 and find out how close they are to bTrue. So bTrue is 100%. How much percent is then b1,...
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3k
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Map Matching GPS to Road Network [duplicate]
I'm working on a project for which I have GPS points and I would like to extract the sequence of roads related to those points. I know that this is called "map-matching" and that there is a load of ...
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