Questions tagged [gpx]

GPS eXchange Format is an open non-propietary GPS file format free from license restrictions used to describe waypoints, tracks, and routes. Its tags store location, elevation, and time. Outside of Esri, it is the defacto standard for exchanging GPS data between applications.

Filter by
Sorted by
Tagged with
35
votes
9answers
19k 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 ...
34
votes
5answers
37k views

Converting .shp into .gpx using QGIS?

I would like to convert .shp into .gpx. Using GIS, I open my shapefile and I tried to "save as" gpx but it gives an OGR error: creation of field ObjectId failed (OGR error: Field of name '...
31
votes
9answers
17k views

Creating polyline-based “heatmap” from GPS tracks?

This winter I am planning to track my downhill skiing/snowboarding using a GPS. Most of my riding will occur at the same resort. I would like to be able to create a sort of "heatmap" that shows the ...
31
votes
9answers
68k views

Adding GPX files into ArcMap?

What is the smoothest route, the easiest user experience, to add gpx files to ArcMap? Ideally, I'd like to interact with .gpx with the same facility as .shp, being able drag'n'drop onto the map ...
13
votes
5answers
7k views

How to build a geographic database of GPS logs?

On our aerial wildlife surveys we typically generate dozens of GPX files, and usually convert most of them into shapefiles for display in a GIS application. GPX files are a terrific way of keeping all ...
11
votes
3answers
4k views

How to bulk import gpx files to QGIS and merge into a single shapefile?

I am looking to create my own 'heatmap' of all the bike rides I have recorded using the app Strava in QGIS. I have over 450 individual gpx files and would like to merge the track points layers into ...
11
votes
1answer
19k views

Is there a way to export a point layer from QGIS to a csv file?

I have saved waypoints from my Garmin as gpx and have successfully imported them into QGIS. Is there a way to now export the layers into a csv file with coordinates? I've tried the export to csv but ...
11
votes
2answers
4k views

How can I export a linestring to a GPX file in QGIS?

I have a linestring in a vector layer in QGIS. How can I expot/save this linestring as a GPX file? I tried to select the linestring, then right click on the vector layer and choose "Save selection as....
11
votes
3answers
1k views

How to anonymise a gps file?

Imagine you have a GPS trace that you want to make anonymous, in the legal sense. How would you do this? Is snapping to the nearest x distance and stripping out the time enough? Are there ...
10
votes
1answer
3k views

Why do vectors disappears when zooming in?

I have imported a .gpx file into qgis and separated the track waypoints using Vector > GPS > GPS tools. When viewing at full extent I can see the original track and component waypoints. However when ...
9
votes
2answers
3k views

Automating batch load of multiple GPX files into PostGIS?

I've got 50+ GPX files that I would like to "batch load" into a PostGIS database. All of the track_points data would be loaded into a "track_points" table (with typical GPS fields like lat, long, ...
9
votes
3answers
12k views

How to transform GPX-tracks into elevation-tracks with any GIS?

I have a GPS track in GPX format available from a recent bike tour and I need and want to do some analysis on the tracks. I'm wondering whether there is any way to transform the GPX data into an ...
9
votes
1answer
15k views

Batch converting Garmin GDB to GPX?

I need to convert a lot of garmin GDB files to GPX in order to convert it to another vector format. Is there any tools available can do a batch convert from garmin GDB files to GPX? Using MapSource ...
8
votes
4answers
10k views

How to use Z-Coordinate in QGIS?

I was mapping an area in Namibia and also tracked a lot of paths on my way with my Garmin device... so I thought it would be nice to see height differences in my area (esp. interesting in the raining-...
8
votes
3answers
14k 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
1answer
2k views

PostGIS - Calculate progressive distance between points on a GPX path

I am attempting to build an elevation profile using PostGIS-PostgreSQL only. I have imported GPX data in my PostGis database, so now I have a table full of the GPS coordinates of the track and the ...
8
votes
1answer
1k views

Converting GPX track_points layer to CSV with lat/lng with ogr2ogr

What's the correct command to convert a GPX track_points layer to CSV with lat/lng coordinates using ogr2ogr?
8
votes
2answers
1k views

How to perform Spline interpolation on GPS Track

I'm looking for a way to apply spline interpolation to a gps track (Gpx format). I am a regular QGIS user and also have GDAL libraries installed on my mac if that helps. Basically trail and ride ...
7
votes
7answers
3k views

Loading multiple GPX files at once?

I have a whole bunch of GPX files that I need to load into QGIS and loading them one at a time using the GPS plugin is a bit painful. It will not allow one to select multiple files -- is there ...
7
votes
5answers
28k views

How can I manipulate the timestamps in a GPX file?

I have a GPS tracked stored in a GPX file. Now I'm looking for a tool that allows me to set the start time of the track and the duration, and the tool should automatically evenly distribute the ...
7
votes
3answers
886 views

Interpolate data from multiple gpx tracks

I have a number of GPX tracks of the same road. But due to GPS error they are not accurate enough (20-30m off). I'm wondering if I could interpolate those multiple gpx tracks into single one. If an ...
7
votes
7answers
18k views

Cleaning/editing GPX (tracks) files recorded from GPS device in QGIS?

During a long trip, I have recorded tracks of my journey with the GPS of my smartphone. I have ended up with about 30 GPX datafiles. Now that I am back, I am trying to draw a map of this trip. I ...
7
votes
1answer
331 views

Unable to load .gpx file from Python Console

I'm trying to create a plugin which will extract the gpx files and load them onto the active layer window in QGIS. While I'm able to load it using the QGIS GUI from Layer>New Vector Layer, I'm not ...
7
votes
0answers
1k views

Importing GPX data to PostGIS table

I'm implementing a recipe from Paolo Corti's PostGIS Cookbook (by the way, a great help!) in order to import track points from multiple GPX files into a PostGIS table in two steps (pages 87-88): 1 ...
6
votes
4answers
11k views

How to convert SHP to GPX or to JSON?

I would like to convert the tree inventory shape files of London (Canada) into a GPX file and if possible into a JSON file. You can download the archive from their Open Data website. It contains the ...
6
votes
2answers
15k views

Read gpx track points in QGIS

I want to read GPX track points with their time stamps into QGIS. I try GPS Tools, GPX Conversions, Waypoints from a track. This fails on my PC at office (QGIS code revision d94c044). Sometimes QGIS ...
6
votes
2answers
3k views

How to determine the most accurate elevation algorithm

I use an Android GPS cycling app to track my bike rides and I would like to get a reasonably accurate estimate of the total ascent I did on a ride. I understand that GPS is very inaccurate at ...
6
votes
3answers
3k views

GPS Datalogger with USB Interface and GPX Output

I'm looking for a reliable, robust and reasonably priced GPS datalogger, to measure time, distance on tracks. The logger should be reasonably priced but ready for outdoor activities. Mud, dirt, a ...
6
votes
1answer
180 views

How to improve GPS recording?

The image shows as example a small loop by car, recorded by two Garmin Dakota 10 devices. It seems both devices have had difficulties caused by the surrounding buildings, the "blue one" seemingly had ...
6
votes
1answer
159 views

Problem opening a shapefile in another application

I helped a colleague converting waypoints from a GPX file to a shapefile. My colleague has only ArcMap. I gave him the shapefile and when he opened it in ArcMap, it did not show anything in the ...
6
votes
1answer
682 views

Differentially correct GPX file

Is there any way to differentially correct a GPX file using free or open-source tools? Does a GPX file contain the necessary information for differential correction (I can put the timestamp in it ...
5
votes
4answers
20k views

Seeking software to perform basic editing of GPX files? [closed]

I'd like to do some basic editing to my GPX files which I record from my mobile. Features I'm looking for are: open GPX file display data of GPX overlayed on a map (google, bing, whatever) select and ...
5
votes
3answers
323 views

Time delta between consecutive points of GPX file?

I'm in a course learning about GIS systems, and we have recently recorded a GPS track. I've exported this track as .gpx and imported the points into QGIS. Each point has a timestamp. One of the ...
5
votes
2answers
623 views

Find GPX files which contain tracks located in a specified bounding box

I have a bunch of GPX files and I want to find out which files contain tracks located in certain geographic extent, e.g. files containing tracks in Pennsylvania. Also, the inverse is also useful too, ...
5
votes
1answer
896 views

Command line tools to generate elevation profile from DEM + GPX/GeoJSON

I'm looking to generate elevation profiles from a number of GPX traces (which I also have GeoJSON conversions of). I have 20m resolution DEMs of the area, in GeoTIFF format. Ultimately I want to ...
5
votes
2answers
620 views

How to download Leaflet vectors in GPX format?

I would like to use the leaflet.draw plugin to allow users to digitize vectors on the map. At the end the data should be downloadable as a GPX-file. Is there any sample that shows how this can be ...
5
votes
1answer
1k views

Python libraries for correlating Photo to GPX file?

Can anyone recommend a Python library(s) that can geotag a photograph with the lat/long coordinates by correlating the timestamp of the photograph to the timestamp of a waypoint within a GPX file? I ...
5
votes
1answer
1k views

Exporting all attributes from a GPX file

I have a GPX file that i have imported into Google Earth, it looks like this. When I try and use the GPX to features tool in ArcGIS, it does not export out all the attributes.. It seems that GE ...
4
votes
6answers
7k views

How do I make a SHP file from waypoints?

I have a Garmin etrex 20 and I want to convert my waypoints into a shapefile for QGIS. The waypoints need their name and background information with them in the shapefile.
4
votes
1answer
2k views

Reprojection from WGS to Slovenian Gauss Kruger in QGIS

I have gpx file (track) in WGS84 (EPSG: 4326) coordinate system from Garmin GPSMAP 62 which is right projected in BaseCamp and MapSource. When I save track as *.GPX and import it to QGIS and use ...
4
votes
1answer
1k views

Calculating speed along point feature class (.gpx) in ArcMap?

I have imported a .gpx file into ArcMap as a point feature class. Each feature has a Point z as well as a DateTime. I want to create a graph that shows speed as a function of distance. How do I do ...
4
votes
1answer
4k views

Is it possible to create a GPS track in QGIS and if so, how? (beginner question)

I'd like to use QGis as a trip planner. Once there's a topographic map on the screen - from whatever source - I'd like to point-and-click a track over that map, then export it in a common GPS format (...
4
votes
2answers
1k views

GPS-Plugin and Garmin data

I am an avalanche specialist and I use a GPS Garmin 62 for fieldwork. I for example use waypoints to measure snow depth in avalanches for volume calculations. When I add a waypoint in the garmin ...
4
votes
2answers
191 views

Generate a GPX file that matches a road network from an imported drawing

I'm looking for a tool that'll help create a GPX file which will help me run a track and create "GPS Art" or "GPS Drawing". I would like to draw simple shapes, like animals or texts by following a ...
4
votes
1answer
1k 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 ...
4
votes
1answer
1k views

How to get all gps points on a road from osm data?

I'm trying to extract gps points on roads in a region. For each road, I need a gps point on that road every 10 meters. I'm aware that Google Map API offer such way points, but due to the latency-...
4
votes
1answer
177 views

Need to combine the lines created by Vector grid in QGIS into one polyline

I am having a fairly specific issue. I am starting off by creating 100m2 squares around specific points on a map by adding a buffer to the point and then using this buffer as the extent for a Vector ...
4
votes
1answer
321 views

Truly lossless TopoJSON / keep all coordinates in TopoJSON

I'm displaying GPX traces on a Leaflet map. I'm using TopoJSON to drastically reduce file size, which works pretty well. My problem is the following : I want to be able to display altitude and ...
4
votes
1answer
353 views

How to calculate location at given time from GPX track

I have a number of sound files with timestamps (HH:MM:SS), made when walking a transect. I need to know where I was when each file was saved. To do this I have a GPX track of the route I took - I can ...
4
votes
1answer
4k views

Load multiple GPX files to Leaflet map

Considering I have a folder that contains multiple .gpx tracks, my objective is to show each of them in a single leaflet map. Then I would personalize thing like tooltips of each track, the color for ...

1
2 3 4 5 6