I had created an example that might be helpful to you with the aspect of putting countries into regions using 'sets', where it was possible to filter by the 'sets' or regions:
If that example makes sense, then it's just a matter of generating colors based on the values that relate to those regions.
Let me know if this helps.
Can you post a small TWBX?
I'd like to know if your current data have [Region] as an element... you might be able to leverage this to get the results you need, pairing it with [Total] to get the variations in color by region.
Sure, here you go.
Regions were set up in the original data, and Tableau doesn't read them as such; it will read Russia that way, because Tableau treats it as a both a region and a country. So I figured I could just group the countries and create regions that way, but the label/coloring issue is still giving me fits.
map2.twbx 37.2 MB