this post was submitted on 21 Oct 2025
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Maybe we need something that will let us overlay population density maps, not just geographic boundaries
Pretty sure the entire point of the original thing was specifically to see those geographic boundaries though
But if part of this is sparsely-populated farmland, being able to compare population density might give us a better picture of where the people really are. It wouldn’t necessarily help us visually compare population, since London doesn’t seem to have a lot of high rise residential buildings, but maybe give a better idea of the sprawl.
I think just looking at the road network gives you fairly nice, clearly delineated areas.
Paris has got this concept of intra-muros (within the walls) and extra-muros and the limit of this area is the ring road around it. And if you look at your favourite map software you can see the 10km wide circle clear as day. Then one other ring further out (about 20km wide), then a third about 40km wide, a bit more patchy, the circle isn't perfect or complete, but still the area is clear enough.
I believe you can see this growth ring structure too, if you look at London and probably a lot of other historic cities.