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Questions tagged [movement-data]

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0
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0answers
29 views

Collecting and analyzing personal movement logs?

I'm looking for a program that logs what specific locations I've been to & how long I've been there, etc. Is this possible on QGIS? For example, if I took my laptop to the store today at 1pm (A1) ...
6
votes
2answers
134 views

Calculating daily travel distance from large dataset using QGIS?

My dataset is around 200 days worth of data on the daily distance travelled by a troop of monkeys. I've never properly used QGIS on my own so don't really know where to start. All of the days are ...
1
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1answer
38 views

Measuring Distances between Points with the same timestamps using QGIS

I'm facing the problem that I want to calculate flight distances of Red Deer. I have a Layer with point Locations of animals; One attribute is the timestamp. I have another layer with point locations ...
1
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1answer
61 views

Calculating mean recapture distance between points

I have a series of coordinates associated with ID and date (these points represent individual recaptures of individuals at different locations). I want to joins lines between the sequential recaptures ...
3
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2answers
452 views

Create line heatmap with QGIS

I have loaded my bike tours as .gpx files into QGIS. It already looks quite nice but I was wondering if it might be possible to create something similar to the strava heatmap with tools of QGIS. I ...
0
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0answers
41 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
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0answers
183 views

Parse GPS track data into 10 sec intervals

I have a GPX track containing latitude, longitude and elevation data. The recordings are done by a Garmin device and have been recorded in varying intervals (between 1 and 44 seconds). I would like to ...
5
votes
3answers
1k views

How to calculate 'off track' error from GPS data?

I'd like to analyse navigational accuracy, comparing planned transects with the actual track flown from GPS data. For example, the planned transects below (green) don't match perfectly with the ...
4
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1answer
118 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. ...
0
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2answers
264 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 ...
4
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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 ...
3
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1answer
937 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
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2answers
719 views

Colour GPS track by speed

I have a CSV file with WGS84 trackpoints and visualizing them with QGIS textplugin works fine. The log interval is 1sec and I like to get the current speed to get a visual feedback, how fast the ...
2
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2answers
582 views

Flow map from aggregate data with QGIS?

I want to create a flow map in QGIS. I have a list of cities and I have to show how many people travel from one city to another. For example, 5 people traveled from Vantaa to Helsinki, 10 people ...
8
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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 ...
20
votes
5answers
12k views

Detecting “lack of movement” on GPS device

We're using a GPS tracking device mounted in vehicles and later display the movements in our application. We're having a small issue however with vehicles when they are NOT moving. Despite standing ...
8
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1answer
2k views

Cleaning GPS track data

I have data captured with a GPS tracking unit. Some track have bad/cold starts and the only way to determine the track quality is by using the altitude. Unfortunately I don't have the raw GPS data and ...
32
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9answers
17k 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 ...
10
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3answers
8k views

Calculate maximum speed from GPS data

I have raw GPS locations for a track, and need to get maximum speed. Simple methods (calculate speed between 2 points, take max) will give meaningless large numbers due to GPS inaccuracy, the point is ...
12
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3answers
436 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 ...