Package: gpxpy
gpxpy -- GPX file parserThis is a simple Python library for parsing and manipulating GPX files. GPX is an XML based format for GPS tracks.You can see it in action onmy online GPS track editor and organizer.There is also a Golang port of gpxpy:gpxgo.See alsosrtm.pyif your track lacks elevation data.Usageimportgpxpyimportgpxpy.gpx# Parsing an existing file:# -------------------------gpx_file=open('test_files/cerknicko-jezero.gpx','r')gpx=gpxpy.parse(gpx_file)fortrackingpx.tracks:forsegmentintrack.segments:forpointinsegment.points:print(f'Point at ({point.latitude},{point.longitude}) ->{point.elevation}')forwaypointingpx.waypoints:print(f'waypoint{waypoint.name}-> ({waypoint.latitude},{waypoint.longitude})')forrouteingpx.routes:print('Route:')forpointinroute.points:print(f'Point at ({point.latitude},{point.longitude}) ->{point.elevtion}')# There are many more utility methods and functions:# You can manipulate/add/remove tracks, segments, points, waypoints and routes and# get the GPX XML file from the resulting object:print('GPX:',gpx.to_xml())# Creating a new file:# --------------------gpx=gpxpy.gpx.GPX()# Create first track in our GPX:gpx_track=gpxpy.gpx.GPXTrack()gpx.tracks.append(gpx_track)# Create first segment in our GPX track:gpx_segment=gpxpy.gpx.GPXTrackSegment()gpx_track.segments.append(gpx_segment)# Create points:gpx_segment.points.append(gpxpy.gpx.GPXTrackPoint(2.1234,5.1234,elevation=1234))gpx_segment.points.append(gpxpy.gpx.GPXTrackPoint(2.1235,5.1235,elevation=1235))gpx_segment.points.append(gpxpy.gpx.GPXTrackPoint(2.1236,5.1236,elevation=1236))# You can add routes and waypoints, too...print('Created GPX:',gpx.to_xml())GPX versiongpx.py can parse and generate GPX 1.0 and 1.1 files. The generated file will always be a valid XML document, but it may not be (strictly speaking) a valid GPX document. For example, if you set gpx.email to "my.email AT mail.com" the generated GPX tag won't confirm to the regex pattern. And the file won't be valid. Most applications will ignore such errors, but... Be aware of this!Be aware that the gpxpy object modelis not 100% equivalentwith the underlying GPX XML file schema. That's because the library object model works with both GPX 1.0 and 1.1.For example, GPX 1.0 specified aspeedattribute for every track point, but that was removed in GPX 1.1. If you parse GPX 1.0 and serialize back withgpx.to_xml()everything will work fine. But if you have a GPX 1.1 object, changes in thespeedattribute will be lost aftergpx.to_xml(). If you want to force using 1.0, you cangpx.to_xml(version="1.0"). Another possibility is to useextensionsto save the speed in GPX 1.1.GPX extensionsgpx.py preserves GPX extensions. They are stored asElementTreeDOM objects. Extensions are part of GPX 1.1, and will be ignored when serializing a GPX object in a GPX 1.0 file.XML parsingIf lxml is available, then it will be used for XML parsing, otherwise minidom is used. Lxml is 2-3 times faster so, if you can choose -- use it.The GPX version is automatically determined when parsing by reading the version attribute in the gpx node. If this attribute is not present then the version is assumed to be 1.0. A specific version can be forced by setting theversionparameter in the parse function. Possible values for the 'version' parameter are1.0,1.1andNone.GPX max speedGpxpy is a GPX parser and by using it you have access to all the data from the original GPX file. The additional methods to calculate stats have some additional heuristics to remove common GPS errors. For example, to calculatemax_speedit removes the top5%of speeds and points with nonstandard distance (those are usually GPS errors)."Raw" max speed can be calculated with:moving_data = gpx.get_moving_data(raw=True)Pull requestsBranches:mastercontains the code of the latest releasedevbranch is where code for the next release should go.Send your pull request againstdev, notmaster!Before sending a pull request -- check that all tests are OK.  Run all the static typing checks and unit tests with:$ make mypy-and-testsRun a single test with:$ python3 -m unittest test.GPXTests.test_haversine_and_nonhaversineGpxpy runs only with python 3.6+. The code must have type hints and must pass all the mypy checks.GPX toolsAdditional command-line tools for GPX files can be downloaded herehttps://github.com/tkrajina/gpx-cmd-toolsor installed with:pip install gpx-cmd-toolsLicenseGPX.py is licensed under theApache License, Version 2.0