While trying to mine OSM changeset data I came across an oddity. I plotted an activity center of mappers, given for each mapper by a GeoHash level 6 tile with the highest count of changeset centroids, not less than 20 changesets.
On such map Dagestan in Russia stick out quite a bit:
This can be correlated with Pascal Neis’ map (he uses a different methodology for the activity center that gives similar results).
Curiously enough, the population density map doesn’t show any concentration of people like that.
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Ce sujet de discussion accompagne la publication sur https://community.openstreetmap.org/t/whats-the-deal-with-dagestan-mappers-density/97298