They analyse based on zoom level 12 tiles, a bigger margin of error for smaller countries it says in the blogpost...
Maybe we can get the source of whatever mikel did and rerun in more detail just for Belgium... Cheers, Ben from https://www.cia.gov/library/publications/the-world-factbook/geos/be.html total: 154,012 km paved: 120,514 km (includes 1,756 km of expressways) unpaved: 33,498 km (2010) Mapbox: 111,684 km https://www.cia.gov/library/publications/the-world-factbook/geos/nl.html total: 138,641 km (includes 3,530 km of expressways) (2014) - no mention of unpaved roads there It might be the unpaved part, should be investigated further for other countries. m On Fri, Nov 20, 2015 at 9:51 AM, Marc Gemis <[email protected]> wrote: > 100% in Germany, The Netherlands, Luxembourg as well. Wonder why the > CIA thinks there are so many hidden roads in Belgium :-) > Or (more seriously) why the definition of road would be different for > Belgium compare to the other countries. > > I cannot tell for Bolivia, but the Belgian roads are similar to other > Western European countries, so I would expect the CIA to use the same > definition there. > > On the blog that was mentioned, you find a twitter address to contact > the Mapbox people. Maybe they can help ? > > regards > > m > > > On Fri, Nov 20, 2015 at 9:30 AM, joost schouppe > <[email protected]> wrote: >> I think in the CIA's imagination :) >> >> Huge differences like that, I'm afraid it says more about the differences of >> the definition of what consists of a motor road. For instance, I know the >> road network in OSM Bolivia to be far from complete as to smaller motor >> roads, but it's way over 100% of the CIA number. So they probably only took >> the main road network as a measure. Meanwhile, OSM is mapping roads that no >> other map has ever mapped :) >> >> 2015-11-20 9:00 GMT+01:00 eMerzh <[email protected]>: >>> >>> Interesting.... thanks for the link .... >>> >>> but it seems surprising no? >>> France is at 100% and us at 73? ... it's kind of low no? any idea where >>> those road are? >>> >>> 2015-11-20 6:52 GMT+01:00 Marc Gemis <[email protected]>: >>>> >>>> Mapbox made a tool [1] to see how complete the road networks in a >>>> country are. Belgium got a 73% >>>> They blogged about it in [2] >>>> >>>> >>>> regards >>>> >>>> >>>> m >>>> >>>> >>>> [1] https://www.mapbox.com/data-platform/country/#belgium >>>> [2] https://www.mapbox.com/blog/how-complete-is-openstreetmap/ >>>> >>>> _______________________________________________ >>>> Talk-be mailing list >>>> [email protected] >>>> https://lists.openstreetmap.org/listinfo/talk-be >>> >>> >>> >>> _______________________________________________ >>> Talk-be mailing list >>> [email protected] >>> https://lists.openstreetmap.org/listinfo/talk-be >>> >> >> >> >> -- >> Joost @ >> Openstreetmap | Twitter | LinkedIn | Meetup | Reddit | Wordpress >> >> _______________________________________________ >> Talk-be mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/talk-be >> _______________________________________________ Talk-be mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-be
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