You have probably seen @coulmont‘s maps. If you haven’t, you should probably go and spend some time on his blog (but please, come back afterwards, I still have a story to tell you). Consider for instance the maps we obtained for a post published in Monkey Cage, a few months ago,
The codes were discussed on a blog post (I spent some time on the econometric model, not really on the map, by that time).
My mentor in cartography, Reka (aka @visionscarto) taught me that maps were always subjective. And indeed.