Hi, for Europe, you could also use the EU-DEM ( http://www.eea.europa.eu/data-and-maps/data/eu-dem) "a hybrid product based on SRTM and ASTER GDEM data fused by a weighted averaging approach" => full compatibility with SRTM, but with better data ;)
Sylvain 2014-08-28 20:49 GMT+02:00 Peter Barth <osm-p...@won2.de>: > Hi all, > > I created a new challenge for MapRoulette: "Fix waterway direction". > > As the waterway's direction in OSM denotes the direction of the water's > flow, I started to compare them to SRTM. This leads to more than 1 > million wrong directions for Europe only. Many times SRTM is right, > however, due to data errors, not every time. That's why I created this > challenge. > > A more detailed description can also be found on my user diary here: > http://www.openstreetmap.org/user/Peda/diary/23632 > > I started with the really easy ones and only Europe for now. I will > upload further tasks soon, worldwide coverage will follow, too. > > Hope you enjoy this challenge, > Peda > > -- > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk >
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