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Questions tagged [tracking]

Tracking refers to recording the position of something continuously.

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30 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
103 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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58 views

Timestamp incorrect after “.gpx to features” conversion in ArcGIS 10.x

I am working with GPS data in a wildlife tracking project where both date and time are important features. The data was collected in Uganda (UTC + 3:00). When I display my .gpx files in Garmin ...
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26 views

Combining tracking data and space time cube using ArcGIS Desktop?

I have a problem with combining tram's route time data and space time cube in ArcGis. I have only data for a time interval from 6:00 AM to 10:00 AM of one day and when I try running the process, I get ...
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32 views

Convert tracklog into a shapefile

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 ...
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132 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 ...
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1answer
29 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
181 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
282 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
115 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 ...
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0answers
229 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 ...
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0answers
262 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
67 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 ...
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0answers
158 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
3k 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
183 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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2answers
768 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
743 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
77 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
671 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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0answers
19 views

Using ARC to manipulate specific cells in a columns to create “lines” from ingested coordinates

I have a shapefile with LAT/LONG coordinates but there is no Start/Stop Columns, just the LAT/LONG. In order to use the XY to Line or Points to line tool I need to have a LAT_Start and LONG_Start; ...
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1answer
751 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 ...
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1answer
179 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
111 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 ...
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2answers
485 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 ...
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1answer
291 views

Keep only the last marker when geolocating

I'm working with OpenLayers 2 and I managed to create a javascript to locate the users and it works fine. I added a marker representing the current location and when the position change, it creates a ...
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0answers
52 views

How to know where views are being generated from in CartoDB?

I see in my dashboard that I can hover over a map and see how much it is being viewed. Many services, like mapbox and even youtube show you where your views are being generated from or perhaps it just ...
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0answers
77 views

Filtering GPS tracks to determine “Moving Time”? [closed]

I am working with GPS tracks of outdoor activities, think cycling, running, hiking. These activities often have "rest periods" where people take a break, wait at traffic lights, or just stopped their ...
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233 views

Animaps does not upload .GPX, alternative sought

I am trying to use the fantastic Animaps. Unfortunately, as stated on its forum, the KML, GPX and TCX upload functions do not work. Does anyone have any familiarity with this site, this problem, or ...
3
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1answer
307 views

Does the mean of latitude and longitude make sense?

The problem setting: I have a time series of geolocation data, namely latitude and longitude. I want to downsampling the time series and don't know if taking mean value of latitude and longitude ...
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0answers
416 views

Geofence and GPS-Tracking in QGIS

What is the easiest possibility to create a geofence and to track if subjects cross the fence? I assume the fence is a simple polygon vector? What do I need for the cars? GPS data set? GPS layer?
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1answer
203 views

GPS data -tracking analyst

i have GPS data from 15 trucks for one month. The data include (location x-y, speed, altitude and vehicle_id). I have used tracking analyst to visualize the data but i need to group them by day to ...
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1answer
3k views

How to create an exact tracking route from GPS data with animated icon?

Probably this is not purely GIS related question, its related to developing issues. I am just asking if there is any kind of suggestions from Gurus. I am building an tracking application where GPS ...
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254 views

Length of sparsely sampled GPS track

I have a list of GPS points logged by a vehicle and I'd like to find out the length of the logged route. The problem is that the vehicle logs only every 10 minutes, so I don't have too many points to ...
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1answer
717 views

Database Editor Tracking Time Stamp Issue

I have Esri Tech Support looking into this but I thought I would post it here too. I have a File Geodatabase with Editor Tracking Enabled. The date is fine but the time stamp for creation and edits ...
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5answers
432 views

Some companies receiving GPS data from vehicles when GPS cannot send any data?

I know that some companies offer tracking services for vehicles such as live GPS tracking they can access any time, but as you can't use the GPS protocol to send any data i wonder how the do it... I ...
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2answers
679 views

Create tracks from GPS points honoring polygon barriers

I have fish tracking data from a river. The data include positions, times and tag ids. Time interval between positions may be several days. I would like to create a polyline track for each fish tag ...
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0answers
172 views

Free Gis/Visualisation SDK for Java to Display Dynamic Traffics with Label

I need a GIS library to display dynamic aircraft tracks and their dynamic labels on an Earth Map. LuciadMap is a powerful tool which has AIS package for tracks and trajectory calculations and it has ...
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0answers
15 views

Track Traffic Display in World Wind [duplicate]

Is it possible to play records which has trajectories and time stamps as live traffics. I did investigate the World Wind SDK but I can not see special classes for aviation or Tracks and trajectory ...
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1answer
809 views

cross platform Mobile tracking app to report to custom server?

Does any one know of IOS, Andriod apps for asset tracking that I can point to my server? I can then write some code to intercept the messages from the mobile app. ideally a solution which works on ...
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0answers
943 views

Moving marker along the track in openlayers

I want to make web map application in openlayers that allows me to make video tracking (not real time) What I want is like this Animated moving marker along line in gpx/kml/geojson format I have ...
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0answers
809 views

MongoDB to store vehicle tracking information

I am building an app similar to Uber for tracking vehicles. Since the update frequency is so high (accounting for several users), I want to know the general practices involved for making writes faster ...
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2answers
1k views

In arcmap how to modify time value in editor tracking fields

In my map, I have several layers enable editor tracking, but the time zone is not the same as our location time zone (GMT +8). When I try to use time slider to modify the time, I find the time slider ...
3
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1answer
114 views

Exporting massive gps tracks to a map

I have about 1000 vehicle equiped by a GPS sensor and 3G connection. Each vehicle feeds a csv file -using 3G connection- with its current location every 5 sec. Each vehicle have its own CSV file. ...
3
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0answers
208 views

Statistically comparing positions from two track datasets? [closed]

I have two datasets with positions that I need to compare. One would be the "observed" positions (someone took the GPS positions manually) and the other one was calculated using a software. To use ...
4
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3answers
618 views

How to compute the outline of multiple tracks?

I have multiple gps tracks with depth data gathered from the lake. The tracks are overlapping/intersecting. I want to get an outline polygon. I have a multi-line shp. I've tried to diffuse it in qgis ...
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0answers
40 views

Changing tracks to vectors in a grid

This is a version of a question that I posted on the GRASS list, but I didn't get any suggestions there. I would like to overlay a grid (cell size about 500 m x 500m) over an animal track created from ...
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2answers
253 views

Identify circuits/loops in GPS track data

This question will be naive and uneducated, but I gotta start my research somewhere, so I'll ask for references and pointers... Let's say you have a GPS time series with a set of lat/long coordinates ...
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1answer
571 views

Add GPS tracks directly to a PostGIS table

Disclaimer: I am a total GIS newb and I have a use case I have not seen elsewhere. Background: I drive country roads looking for old building, cemeteries, school houses, etc and I record the ...
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0answers
172 views

GPS tracking using smartphones [closed]

We're looking to launch a study that examines spatial behaviour on a university campus. Given the near ubiquity of smartphones among our study population, we're excited about the possibility of using ...