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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24 views

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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22 views

Resample to same extent code problem - R

I have rasters for the same area (same polygon) with very slightly different extents. I have 100+ files with differing extent. I followed suggestions to specify layer with desired extent and resample ...
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1answer
64 views

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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1answer
679 views

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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34 views

How to match noisy GPS traces to the accurate polygon?

I have a bunch of vehicle's GPS traces and they are noisy due to some weak signals and also the parking area is in a basement. So I have two polygons which are two car parks and I want to map each of ...
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2answers
769 views

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 ...
2
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1answer
85 views

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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1answer
137 views

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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0answers
187 views

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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0answers
123 views

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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1answer
2k views

Seeking alternative for ERDAS IMAGINE AutoSync?

I had the possibility to work with a Demo-Version of the ERDAS IMAGINE module AutoSync. I have different geo-rasters (i.e. geoTIFFs) produced by UAV photography and which have to be matched the best ...
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2answers
1k views

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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13answers
26k views

Map matching links and ideas? [closed]

I'm using OpenStreetMap and its vectorial road network and I'd like to implement a map matcher algorithm. Currently I'm able, for each GPS position, to retrieve the nearest road segment and ...
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2answers
307 views

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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2answers
1k views

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 ...
4
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1answer
87 views

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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5answers
13k views

How to match GPS collected data to routes on Google Maps?

I am using Google Maps to implement a GPS Monitoring system of data collected from vehicles. My problem occurs when the points and lines do not match with the route and cut through other streets and ...
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1answer
426 views

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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1answer
2k views

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 ...
2
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3answers
965 views

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 ...
9
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5answers
6k views

Matching GPS tracks

I'm looking for a proper way to process multiple GPS tracks (so time ordered list of lat/lon points) and match/classify that segments, that are covered by multiple tracks: So it's not about recording,...
2
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1answer
5k views

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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0answers
137 views

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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1answer
580 views

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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0answers
81 views

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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2answers
2k views

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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2answers
432 views

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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3answers
628 views

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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0answers
141 views

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 ...
11
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2answers
4k views

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 ...
3
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1answer
380 views

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 ...
6
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0answers
2k views

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 ...
2
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1answer
226 views

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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0answers
606 views

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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1answer
165 views

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 "...
1
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1answer
500 views

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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1answer
785 views

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 ...
2
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0answers
170 views

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: ...
2
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0answers
173 views

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 ...
1
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1answer
574 views

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 ...
2
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1answer
486 views

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,...
2
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1answer
2k views

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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1answer
2k views

Making Map Matching Points to Roads [duplicate]

I'm having some trouble while map matching these points for some streets. Could you lend me a hand?
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2answers
2k views

How to calculate the azimuth of a line of a multilinestring in PostGIS?

I have two spatially enabled tables in PostgreSQL with a geometry in each: First table is with POINT type, second is with MULTILINESTRING. I need to calculate the azimuth of the LINESTRING part of a ...
0
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1answer
394 views

How to map and color localities (provinces) with an external CSV using Quantum GIS

I use a Swiss shape file map (called PLZO_PLZ) available on http://www.cadastre.ch/internet/cadastre/fr/home/products/plz/data.html (ZIP file Shape LV03) PLZO_PLZ contains a column called PLZ which ...