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I've added a new feature to WaterwayMap.org: Loop/cycle detection!
It shows all places where `waterway`s (e.g. rivers) form a loop, and go around in a circle. Most of these are simple tagging mistakes. Please get mapping!
map: https://waterwaymap.org/loops/
#OpenStreetMap #WaterwayMapOrg #RiverMapping #QA
waterwaymap.orgWaterwayMap.org - LoopsLoops & cycles in OpenStreetMap Waterways
FOSSGIS @amapanda@en.osm.towngeneral discussion on the OSM Forum: https://community.openstreetmap.org/t/the-wonders-of-early-medieval-fore-abbey-and-osm-river-topology-today-i-e-waterwaymap-org-is-going-around-in-circles/107497
or github issue tracker: https://github.com/amandasaurus/waterwaymap.org/issues
OpenStreetMap Community Forum · The Wonders of early medieval Fore Abbey, and OSM river topology today (i.e. WaterwayMap.org is going around in circles!)Around the year 630, St. Féchín founded Fore Abbey, about 75 km northwest of modern day Dublin, Ireland. There are Seven Wonders of Fore Abbey, one is “the water which flows uphill”. Naturally, this is merely the fantasy of early medieval monks, and couldn’t actually happen in reality. So here’s a map of them! WaterwayMap.org/loops/ There are 21,000 loops of water going around in a circle in OpenStreetMap today. These are almost certainly mapping mistakes. The code, looks any waterway tags, ...