Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [tracking]

Tracking refers to recording the position of something continuously.

0
votes
0answers
16 views

Elucidating network distance formula [on hold]

I have GIS data with latitude, longitude, and time. There are several tracks. From there I would like to calculate the network distance. I am currently using the following formula (length1/time1 + ...
1
vote
0answers
19 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 ...
1
vote
1answer
24 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 ...
1
vote
0answers
25 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 ...
0
votes
1answer
48 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. ...
2
votes
2answers
171 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 ...
0
votes
0answers
73 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 ...
0
votes
0answers
28 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 ...
1
vote
0answers
33 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 ...
1
vote
0answers
154 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
votes
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 ...
0
votes
1answer
196 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 ...
2
votes
0answers
335 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 ...
0
votes
1answer
130 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
votes
0answers
254 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
votes
0answers
278 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 ...
3
votes
0answers
72 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 ...
3
votes
0answers
181 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....
5
votes
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 ...
2
votes
0answers
216 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 ...
3
votes
2answers
826 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 ...
0
votes
1answer
850 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 ...
1
vote
1answer
81 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-...
0
votes
2answers
714 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, ...
3
votes
1answer
784 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
votes
1answer
185 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 ...
1
vote
0answers
116 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 ...
3
votes
2answers
509 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 ...
0
votes
1answer
303 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 ...
1
vote
0answers
54 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 ...
1
vote
0answers
78 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 ...
3
votes
1answer
324 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 ...
1
vote
0answers
445 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?
0
votes
1answer
219 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 ...
6
votes
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 ...
1
vote
1answer
736 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 ...
2
votes
5answers
467 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 ...
2
votes
2answers
698 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 ...
1
vote
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 ...
0
votes
1answer
821 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 ...
2
votes
0answers
834 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 ...
1
vote
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 ...
4
votes
1answer
117 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
votes
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
votes
3answers
626 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 ...
0
votes
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 ...
0
votes
2answers
260 views

Identify circuits/loops in GPS track data

I have a GPS time series with a set of lat/long coordinates per second, how would you go about identifying circuits/loops in that GPS track? To the layman, it seems like something that should be ...
0
votes
1answer
583 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 ...
4
votes
0answers
204 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 ...
3
votes
2answers
471 views

Converted GPX file has null values in open attributes

I'm an absolute newbie but I think I'm doing this right. I've got a bunch of .fit files from my garmin. I can use GPSBabel to manually convert these to GPX XML and the map looks fine after the ...