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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
@amapanda Sometimes a navigable waterway=link canoe=yes exists inside a lake around an island, like way 1171031305 and peers near 45.542294/-78.590579. Is the error here one of *way direction* only (reverse it), or boats should only travel on one side of the island (delete a way segment) or something else (change tags)?
@ellie I've fixed that by removing `waterway=link`.
There are several `waterway` tags that can go in cycles, e.g. `=ditch`.
@amapanda Removed waterway=link from the loop detection algorithm's consideration or removed from the ways? (I don't see edits on the ways so either cached or the former...)
[Looks like https://www.openstreetmap.org/user/scarapella/history/ has a lot of waterway=link tags added recently. Also I see https://wiki.openstreetmap.org/wiki/Proposal:Tag:waterway%3Dlink exists as of recently.]
FOSSGIS @amapanda@en.osm.town@ellie the waterwaymap loop detection ignores waterway=link now
@amapanda cool beans