That's a wicked cool visualisation. I love it!

I have underengineered a similar problem with Owntracks, a Python receiver logging the location to a daily GPX file, and a static site generator generating daily map pages out of that data.

My goal was radically different: have everything saved in standard format, along with my other synced personal files, and turned into a static site. The static site is a daily diary augmented with my other activities. Owntracks is multiplatform and absurdly reliable.

Mine just runs mosquitto_sub | gzip > $(date --iso=seconds).gz