[OSM-talk] Map of Population Density vs. OpenStreetMap density

Darafei "Komяpa" Praliaskouski me at komzpa.net
Wed Jul 10 05:51:02 UTC 2019


We've updated http://disaster.ninja/live/ to use fresh 2019 release of GHSL
Mountains in Switzerland aren't populated anymore. Chinese mountain regions
are also better detailed.

Have a good day!


On Sun, Jul 7, 2019 at 3:23 PM Christoph Hormann <osm at imagico.de> wrote:

> On Sunday 07 July 2019, Darafei "Komяpa" Praliaskouski wrote:
> >
> > We're using GHS population grid in Switzerland.
> > https://ghsl.jrc.ec.europa.eu/data.php
> > Methodologically, they use radar data to find "houses". It means on
> > their dataset people also live along roads with asphalt, and - may
> > happen - bare rocks are also populated. You can drop them a line on
> > jrc-ghsl-data at ec.europa.eu to say thanks.
> I am familiar with that data - they use census based or otherwise
> estimated population numbers per admininstrative unit and distribute
> this population among areas they identified as "built-up" using rather
> questionable processes (what we in German tend to describe
> as "Kaffeesatzleserei").  There is no identification of houses - source
> data used is way too low resolution for that.
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