Questions tagged [tracking]

Tracking refers to recording the position of something continuously.

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107 views

Separate NMEA String in QGIS for position tracking

I'm using a tracking system that exports positions as NMEA strings output by a single COM port. Each string has a unique identifier ("001", "002", "003") that represents ...
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1answer
16 views

Input App recording tracks

Is there a way of recording tracks in Lutra Consulting's app in the background? I cannot reckord my track and putting point records in the same time.
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1answer
63 views

Converting GPS track to MultiLineString using GeoPandas and shapely [closed]

I have many GPS tracks (long, lat, alt, timestamp) from heavy trucks. Trucks are go on some paths. How can I extract the path from GPS tracks without deviation and convert it to one MultiLineString? ...
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1answer
23 views

deLorme inReach says fix=none through entire track

While crossing the Atlantic, from time to time, I recorded a trkseg with a deLorme inReach, the pre-2015 version. Every trkpt has <fix>none</fix> yet the coordinates look good: an almost ...
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1answer
46 views

Step-wise animation of movement data (multi-temporal migration tracking) using QGIS

I'm trying to find a way to visualize/animate migration tracks of wildlife in QGIS starting from multitemporal GPS data (so point data of different animals over at different points in time). An ...
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47 views

Generating points along a GPX line with 3D distance intervals

I recently tracking the road using Garmin GPS, I get the tracking line which is in GPX format. The file has CRS EPSG:4326 Now, I want to make point with specific interval (100 m) along the line. I ...
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1answer
46 views

GPS distortion correction and coordinate adjustment

I was making a survey test and moving with a boat that was equipped with two different GPS systems. The position was recorded every 0.5 m. When I was evaluating the data I saw that from time to time ...
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78 views

QField Tracking problem with Trimble R1

I'm using QField on a Samsung Active 3 Tablet which is connected with a Trimble R1. The GNSS Status App provides the mock location. Previously I had some problems with the R1 positioning me not ...
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15 views

Computing the list of POI "visited" by a given track

The problem: finding "visited POIs" (1) I have on the one hand a set X of let's say Points of Interest (POI) defined by (label, latitude, longitude), for instance Pall = {("Punab", ...
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58 views

Live waypoints update on Leaflet map

I have an application that uses my Leaflet map. I want to use it like navigation. But the path is not updated. Where is the problem? setInterval(livetrack, 5000); function livetrack() { $.get("/...
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17 views

How to overlay vector grid to keep track of areas I have reviewed:ArcMap

I need to review large areas at the street level (in ArcMap) to make sure certain features are up to date. Is there a way to overlay a grid so I can "check off" areas I have already covered? ...
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1answer
52 views

Advanced editor tracking in ArcGIS Pro

Is there a way to track edits which have been made to a feature class in ArcGIS Pro? I.e. a field being auto populated which would give information in regards to what kind of edit has been made, e.g. &...
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67 views

Keep tracking alive for trackpaths when phone is in sleep mode [closed]

I've found that tracking only works if QField is active and the screen is turned on constantly. This drains battery power. As soon as the power button is pressed to conserve the battery the tracking ...
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2answers
183 views

GPS glitch causes 200 m circles around stationary position- Has anyone seen this before?

I am working with GPS data from public transport buses in a city in the UK. The data have very characteristic circles of approx. 200 m diameter at bus stops. I suspect that these are caused by an ...
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199 views

Recording a track, not a polygon in QField [closed]

I researched the QField documentation, google, etc. but could not help myself. My goal is to record a GPS track using QField. However, the tracking function only seems to work in polygon layers. The ...
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1answer
227 views

Buses movement data visualization in QGIS

What is the easiest way to visualize the movement of city buses in QGIS, as it is shown at this website? https://anitagraser.com/2020/05/24/movement-data-in-gis-30-synchronized-trajectory-animations-...
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64 views

QGIS 3.10.5 GPS live tracking

I use QGIS 3.10.5 and GARMIN GPSMAP 64S connected with USB cable to do live tracking. The GPS Information panel shows that I am connected but nothing happens on the screen.
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1answer
33 views

Tracking in browser while the phone is locked with ArcGIS (ESRI) [closed]

The Question How can I track a user's movements via ESRI's JavaScript API in a web browser when their phone is shut/locked? This would ideally work for all web browsers (i.e. Android and Apple ...
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46 views

How to prepare oneself to show a polyline based on latitude and longitude information in a csv/json file with heatmap information too? [duplicate]

I am quite new to working with JavaScript as well as geo location systems. I am looking for an open source JavaScript library to show - on the web - something very like the running trackers show you -...
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1answer
134 views

GPS: what limits the _rate_ of change in altitude?

I have a GPS tracker/transmitter I use in rockets. I use it to locate and recover a rocket. I realize that Altitude is not the strong suit in GPS, and don't expect it to be really accurate. Neither do ...
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45 views

Receiving strange characters from GPS tracker, is this HEX or binary?

I am struggling with a GSM GPS tracker. It looks like a clone of GT02A, and it is a relatively common model. My problem is that when it sends data to my server, it is not readable. I set it to send ...
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61 views

PostgreSQL Trigger to keep track of table changes [closed]

I am trying to create a trigger (PostgreSQL 9.4) to track changes made to a table. This is my approach: CREATE OR REPLACE FUNCTION taxon_history() RETURNS trigger AS $BODY$ BEGIN IF TG_OP = '...
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1answer
200 views

How to track progress on a route?

I want to track and visualize the progress of a bus, as follows: I have the coordinates of each station as well as the coordinates of the bus, updated every 10 seconds The information is stored in ...
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55 views

Eliminate irrelevant points based on time and distance

I'm collecting raw GPS points from android device for tracking, now when i'm creating a linestring based on the points i collected there are some points which makes no sense (due to GPS fluctuations). ...
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0answers
47 views

Interactive trigger for external image viewer?

Is it possible to navigate from point to point with a shortcut on the keyboard and interactively (tracking) display the embedded photos at the point locations in an external image viewer? I could do ...
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1answer
46 views

Accurately tracking location in outback? [closed]

I am looking for a way to efficiently track my whereabouts/tracks whilst traveling through the Australian bushland. In the past, I've just recorded my longitudes and latitudes from a basic GPS onto a ...
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0answers
294 views

Difficulty in getting QGIS to connect with in-built GPS (COM3 NMEA port)

I have a Motion J3500 rugged tablet which was upgraded last year to run Windows 10. The tablet has a built-in GPS / broadband module (Gobi Sierra 2000). I use QGIS (v3.2) on the tablet, with the GPS ...
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1answer
71 views

wrong track building with openlayers

faced with the situation when ol draws lines if the coordinates are "scattered". for example. coords as is: and sorted coords by date: bottom image is almost correct except sharp lines up. ...
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2answers
2k views

Auto generating waypoints to a GPX file along track (hiking path - not as crow flies)

I have used Google Maps to build a list of waypoints for a trail I want to hike but the waypoints are simply my start, end and maybe a couple of points of interest for my day and any campgrounds along ...
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0answers
45 views

Export tracklog from GPS information panel [duplicate]

When I use QGIS on the field, I always turn the tracklog on in the "GPS information" panel. So the tracklog is showed as I walk with the GPS on, but I can't find the way to download this track into a ...
2
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1answer
326 views

Live Tracking with Garmin inReach explorer+

I'm trying to connect my Garmin Inreach Explorer+ gps to QGIS (running on a MS Surface 5 tablet) via bluetooth, but have been unsuccessful so far. The goal is to have to a live tracking tablet while ...
2
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1answer
97 views

Visualize Polygon Changes

I've unfortunately experienced a version control issue between offices where one person was editing an older version of a polygon shapefile. Now I need to reconcile those edits into the current ...
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1answer
274 views

convert geoJson data to interactive map tiles containing icons,labels and popups

In my search for a solution for showing up a tremendous amount of points data on a map, I ended up with an idea of generating GeoJSON data, then convert GeoJSON to map tiles that can be served using a ...
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0answers
1k views

Record a GPS track in qfield?

Okay I can't figure out for the life of me how to log a live GPS track in qfield. I can add points and draw polygons, both of which are useful, but how does one track? I am trying to use qfield to ...
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1answer
191 views

Can I use avaraging to pinpoint the exact location of a stationary GPS device?

I have a simple Android app that keeps track of users' location, using the following setting of the LocationManager to avoid constant updates and thus battery drain minTime = 60sec (minimum time ...
2
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0answers
439 views

Identifying activity places in GPS trajectories using R?

Is there a way in R (a script or package) that would allow identifying activity spots in GPS tracking data? I have a number of GPS tracks in GPX/CSV formats that follow the movements of people in a ...
2
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0answers
471 views

Plotting realtime .nmea files with QGIS 2.18.10

I am working on a project that requires us to track 2 GPS targets, one car and one weather balloon. The realtime GPS tracking of the car via the COM port works great. The decoded data from our weather ...
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0answers
199 views

Computing the similarity between tracks

I need a way of comparing two tracks (they will most likely be GPX files), i.e., 2 arrays of lat-longs. I need to write some code that will compare the two arrays and give me a measure of how close ...
2
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0answers
380 views

Vessel Tracking‎ service in qgis or standalone

I'm looking for a Vessel Tracking‎ service to add it in Qgis or a standalone service. I'm interested in adding a layer above the map who does tracking the vessels. I find this https://www....
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2answers
7k views

Inaccurate altitude GPS data with my Android?

I've been recording tracks with GeoTracker on my Android. In places I have points that have altitudes higher than the peaks of a mountain. Like one altitude difference is 46 m. How is it possible to ...
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0answers
356 views

Multiple gps tracking in QGIS?

I was wondering if someone could point me in the direction of display the output of multiple gps devices at the same time in QGIS. I have two GPS devices that are both outputting NMEA sentences ...
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3answers
2k views

Calculating distance travelled along track in QGIS?

I'm new to GIS. I have some tracks of people walking from point A to point B that I took using breadcrumbing with Garmin e-trex (set on the Auto track settings). I've loaded the tracks into QGIS and ...
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1answer
2k views

Finding out if I've deviated from given route too much (computing similarity between routes)

I'm making an Android app and I'm trying to find out whether I've deviated from the given route too much (I'm getting location via GPS and the route is predefined). I've tried calculating Fréchet ...
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1answer
94 views

How to adjust the Record Dates field in ArcGIS 10.3.1 for Desktop?

When I use the Editor Tracking in polygon layer, the Date time that been created is not true: and my real time was: I read: http://desktop.arcgis.com/en/arcmap/10.3/manage-data/editing-...
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2answers
1k views

ArcGIS API for JavaScript: Draw a Tracker Line from GPS points

I have gps points which sent from tacker device I need to draw a line in openstreet map ArcGIS with Javascript, How can I do this. I can convert gps points to any format that needs to be (XML, JSON, ...
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3answers
2k views

How to split a GPX track file into several files of N trackpoints each?

I have some GPX track files, each containing tracks with thousands of trackpoints. I need to split those files into multiple ones, each with 500 (or more, accordingly) points each. Unfortunately I ...
4
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1answer
2k views

Create GPX track in R. writeOGR function

I have a gpx file where someone exported two different activities in two separate locations to a single track. I need to split them and avoid getting the erroneous line in the track layer that ...
2
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1answer
252 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
162 views

How to export dynamic track (video) from QGIS?

Is it possible to export a file video with QGIS with a dynamic track from point A to point B? I need something like a presentation of a race where a dot is moving along the track from the start to ...
5
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2answers
873 views

How to rename several layers at the same time?

I have got some GPS tracks (MultiLineString). As I import them to QGIS, they look like this: I would like to merge them and to do so, I have to rename all of them like this (picture 2) otherwise an ...