Alternative to map : drill-down chart like sunburst or treemap

[emmanuelle]

See for example https://codepen.io/MojtabaSamimi/pen/ExjROJd?editors=0010. It could be in tabs with the map, for example. Of course it also has to be balanced with the total size of the page.

[GaelVaroquaux]

I'm not convinced that this will be much easier to use than the map. The problem with the map, IMHO, is that interaction with it is hard. With a good mouse it works OK, but on other input devices, it's hard.