Add altitude track visualizer
Can such panel be added as a bottom collapsible one when a track or gpx route is selected?
This distribution is typical, green for down, blue for plain and red for climbing parts. It can add waypoints (and distance) and kilometer on hover for mouse (or time recorded).
The best existing example I can think of (to be reworked) is the gnome-power-statistics, but needs to be ported to javascript: