Now running https://github.com/jaroslawhartman/withings-sync with debian’s virtualenv:

apt install virtualenv python3-virtualenv

virtualenv -p python3 withings-sync

source withings-sync/bin/activate

pip install withings-sync

export WITHINGS_USER=you

withings-sync

(get token, then set up a regular job to sync)

$ cat sync.sh
#!/bin/bash
source withings-sync/bin/activate
export WITHINGS_USER=you
export GARMIN_USERNAME=you-but-on-garmin
export GARMIN_PASSWORD=your-garmin-password
withings-sync
$ chmod 700 sync.sh

crontab -e

12 4 * * * cronic /home/you/sync.sh

I’ve concluded that I need to disable that feature My step counts fluctuate so heavily, and the algorithm is so basic, it’s basically impossible to meet step goals consistently. The most trivial optimization of auto step would be to take avg steps-beyond-goal into account when decreasing the goal, but it seems that’s not what it currently does.

How to plot a heatmap of your Garmin tracks on Google Maps JS API:

#1 request all your data from Garmin: https://www.garmin.com/en-US/account/datamanagement/

#2 download https://github.com/musings-hub/garmin-fit-to-heatmap-js

#3 run it: python3 fit-to-js-threaded.py ./Garmin/fit/

This will generate a file named “heatmap-datapoints.js“.

#4 open heatmap-datapoints.js and copy the contents into jsfiddle (see screenshot above).

#5 update the javascript to include your own API key for Google Maps API (see https://developers.google.com/maps/documentation/javascript/get-api-key for how to get such a key if you don’t have one already).

#6 click “Run” in jsfiddle.

#7 admire the heatmap of your location based activities

That one contains 468 usable startLongitude/startLatitude elements, which fits nicely into kml as Placemark and renders well on https://www.google.com/mymaps.

The resulting map:

Which also works well zooming in:

Again, drop me a note if you feel I could help you with any of this.

Today I had some fun exporting all my recorded Garmin tracks and plotting them as a heatmap on Google Maps.

After having wanted to create a map like this for ages, I finally found some time to hack together the toolchain needed. If you want to do the same, the easiest way I’ve found was:

#1 Ask Garmin for an export of all your data: https://www.garmin.com/en-US/account/datamanagement/

#2 Use the fabulous https://github.com/polyvertex/fitdecode to extract the lat/longs of your tracks.

#3 Use the Google Maps heatmap API to plot the data: https://developers.google.com/maps/documentation/javascript/reference/visualization

Alternatively, drop me a line, and I’d be happy to help

You might wonder how to plot all your tracks on a map – which is what I initially started with. However, with 346 recorded activities, using kml to plot them (through various platforms) I found it difficult to navigate the result. – If you’d like to get your fit files converted to kml to play around with them, also drop me a note, I have a converter for that too.

A close up view (without adjusting radius, maxIntensity,.. so not optimal):

Update: I’ve uploaded the script to generate a javascript include on github: https://github.com/musings-hub/garmin-fit-to-heatmap-js

Update: I’ve updated the script to generate content to run on jsfiddle: https://www.musings.ch/2020/02/26/garmin-tracks-heatmap/