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Firstly, wow! This is fantastic. And highly addictive. But... hrmmm... the small town of Nowogródek Pomorski in north-western Poland (population 450) appears t
by lucideer 8y ago
Firstly, wow! This is fantastic. And highly addictive.
But... hrmmm... the small town of Nowogródek Pomorski in north-western Poland (population 450) appears to have the tallest spikes in all of Europe. I wonder what that's about.
Actually, the anomalies (or "noise" as the article calls them) seem some of the most interesting parts of the map—it certainly makes it very easy to readily identify patterns in the GHSL in terms of consistent/predictable -vs- possibly unreliable data.
- pjc50 8y agoThat has to be some sort of arithmetic error, e.g. all of the 450 people assigned to a single square meter degenerate polygon in the underlying GIS data.
- lucideer 8y agoWouldn't add up as the spikes are taller than in large cities which would have dense multistorey apartment blocks, and also there's quite a few spikes—they continue in a line along a major road, so I'm guessing they're likely the result of some convoluted story like corrupted gps points in csvs being corrected to the nearest boundary of a polygon by some intermediate processing or some similar craziness.