In this repo, I'm including a few scripts I use to smooth, streamline and reverse GPX files. All Python-based with Bash prompts.
First, install dependencies. These scripts use gpxpy to parse GPX files and geopy for distance calculations.
pip install gpxpy geopy
To run the files, modify the 'input.gpx' and 'output.gpx' in the last line for your desired GPX input / output filenames. Place your input GPX file and the script in the current directory (e.g., using cd in Bash). Then run the script using a command like the below.
python smooth_gpx.py
The smooth_gpx.py script removes GPX points within 10 meters of each other to smooth out a route. When breaking or moving slow on segments, GPX routes can become messy.
Distance can be modified to any desired number of meters per file comments.
Sometimes watches die or we forget to start tracking. When you follow the same route on entry / exit, you can use reverse_gpx.py to efficiently extend your route.
GPX files from Strava and other trackers can contain unnecessary, clunky metadata. The simplify_gpx.py script removes timestamps and extensions.
The script can be modified to remove other metadata by adding point.[data]... per the file comments. (Or timestamps / extensions can be left in place.)