Questions tagged [tracklog]

A generic term for data recorded from a GPS unit which is not in a specific file format.

Filter by
Sorted by
Tagged with
35
votes
9answers
18k views

Is there a good GPS track analysis library?

I keep writing custom code to work with GPS tracks: GPX files and NMEA logs from my phone, dedicated GPS logger, etc. I feel like I'm reinventing the wheel and am wondering if there's some standard ...
18
votes
1answer
2k views

Statistically calculating real road from set of GPS tracks?

I participate in a long-distance cycling club, and we started to collect GPS data routinely from our riders. My interest is to calculate "the real trajectory" for future events based on accumulated ...
12
votes
3answers
448 views

Software for analyzing GPS tracklogs to extract human-readable placenames

I have a pile of GPX-formatted tracklogs for many countries where I've travelled over the years (the GPS-device has been continuously on and recording for most of the trips). I would now like to ...
8
votes
3answers
13k views

Rendering GPX track data onto video?

I have two geeky passions while driving: recording GPX data to upload to OSM as well as recording on board videos like this one. Since these kind of videos are sort of boring for others to watch I was ...
8
votes
3answers
3k views

Storing GPS tracks with timestamps in PostGIS

I need to store a series of GPS points with timestamps in the database (traces of various vehicles). I am wondering which of two approaches to choose for storing them in the PostGIS table: 1.) Each ...
7
votes
3answers
238 views

Splitting self-intersecting line at only one point using QGIS?

I have a self-intersecting line that I tried to split using the Split Features tool in the Advanced Digitizing Toolbar. The problem is that when I try to split the line at one point, the line splits ...
5
votes
2answers
2k views

Tracklogs to single line OR several lines to one line?

Setting: I have several trucks driving out of my factory delivering goods and coming back for more deliveries. These trucks are equipped with GPS so that they may return tracklogs to me. These ...
5
votes
1answer
2k views

Calculating “travelled distance” of a GPS track without including “stops”

I have a set of GPS tracks from a cycling event and I want to correlate their distance along the route. Problem is: when a rider stops, generally by entering a covered place, GPS keeps logging (low ...
4
votes
6answers
46k views

How to connect points with a polyline in ArcMap 10?

I have a layer containing a few hundred points representing a survey track. The points are laid out in chronological order in the corresponding attribute table. How can I have ArcMap 10 automatically ...
4
votes
1answer
429 views

Generating transects perpendicular to track generated from a PPK GPX file

I am new to QGIS and barely getting the hang of it so this question is quite simple. I have a route in a GPX file a generated from a PPK I took along the shore during a high tide. I would like to ...
3
votes
1answer
707 views

Seeking automated techniques for cleaning bad data from GPS track log? [closed]

I have been having some problems with "bad trackpoints" in the track logs I've been creating, especially in bad signal conditions. In some cases these obviously jump miles away from the true location;...
3
votes
1answer
14k views

How do I convert a set of latitude/longitude coordinates with timestamps to a GPX tracklog?

Converting tracks from a GPX track to a CSV table or some other format is relatively easy, but I'm looking to go the other way. I have a table of point locations logged with a handheld GPS, with ...
3
votes
1answer
1k views

How to calculate “stop points” from a set of GPS tracklogs?

I have a set of GPS tracks pertaining to a cycling event that happened in the same day. I don't have much geographical information about the event itself, except for the tracklogs I downloaded from a ...
2
votes
1answer
1k views

Video UAV Tracker for QGIS (2.14)?

I would like to view videos and my position on the videos' gpx tracks simultaneously and I would like to do it in QGIS. I know that there is a plugin for this but it was made for an earlier version of ...
2
votes
0answers
163 views

Recording track log in QGIS

I am using QGIS to record field data and also meandering field transects. When I was using ArcGIS I could turn on the tracklog function and a shapefile could be created of automatically generated ...
1
vote
1answer
53 views

Tracks in a GPS file format [closed]

How to fill a file with different GPS tracks so that when opened in a GPS track viewer the tracks appear simultaneuosly as different tracks? What GPS viewers do that?
1
vote
1answer
166 views

Simulating historic GPS data on map [duplicate]

I have some really basic newbie questions. I have following data with me: ESRI Shape files (.shp, .shx, .dbf, .prj, .sbn and .sbx) KML/KMZ files GPS coordinates (~400k) of some cars (~50) tracked ...
1
vote
0answers
143 views

Collecting simultaneous features or reducing tracking interval on location tracking in ArcGIS Collector? [closed]

I encountered a problem in using collector for our data collection on the field. We are archaeologists doing prospection work and needing to create point features for found artefacts as well a ...
1
vote
0answers
57 views

Merging multiple concurrent gps tracks

I have GPS tracks from 2 or more devices in multiple vehicles. At least one device reports the vehicle's position to a webui approximately every 5 seconds assuming that it has a cellular data ...
1
vote
0answers
39 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
199 views

Recorded track capacity of Garmin eTrex n0 devices

I am interested in purchasing a Garmin eTrex 10 or 20 primarily for geotagging the photos I take on holiday, although I suppose the other features might come in handy as well in the future. When using ...
1
vote
0answers
84 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 ...
1
vote
0answers
73 views

Adding buffer to tracklog in real-time in ArcPad?

Hardware: Trimble Juno T41/5 Software: ArcPad 10.2 I am looking for a method or plugin for ArcPad that will help with spraying for noxious weed control, specifically a way to add a "boom width" ...
1
vote
0answers
38 views

Dense data set of locations for flow analysis

I want to do some analysis on real world data related to crowd flows and now I am looking for a publicly available (or at least available to academia) data set of trackings in a crowd. The data set ...
1
vote
0answers
69 views

“Flight recorder” for automobiles/motorcycles? [closed]

As I sat in traffic court last week for a non-moving violation, many of the cases were clearly he said/she said issues.. particularly with stop sign violations. I can easily see how this specific ...