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 ...
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 ...
7
votes
3answers
233 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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
2
votes
0answers
156 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 ...