On Tue, Oct 15, 2013 at 10:52 PM, Russ Nelson <[email protected]> wrote: > It *is* incorrect to map in contravention to the description in the > Wiki. > It *is* incorrect to map without the wiki containing an explanation of > how you map. > > If there are a dozen different ways to enter a stop sign into OSM, and > they're all documented in the Wiki, that's good. > > If there are a dozen different ways to enter a stop sign into OSM, and > one isn't documented in the Wiki, that's bad. > > If, of course, two people read the Wiki and map differently, that's > not their fault -- it's the Wiki's description's fault.
Unfortunately, the wiki is not in a state that allows for such rigid statements connecting mapping practices and documentation. I do agree generally that everyone should look to the wiki for guidance on how to map things, but it can't always be the definitive voice you seem to make it out to be. Let me just give the one seminal example of confusing, sometimes contradictory information on highway classification, as represented on no less than four pages here https://wiki.openstreetmap.org/wiki/United_States_Road_Classification, here https://wiki.openstreetmap.org/wiki/United_States_Roadway_Classification_Guidelines, here https://wiki.openstreetmap.org/wiki/United_States_roads_tagging AND here https://wiki.openstreetmap.org/wiki/Highway:International_equivalence. Another source of confusion on the wiki is the voting system on tags, which evokes a sense of authoritativeness on decisions made per this process that does not exist in reality, because so few people actually take part in this process, and many actively dismiss it as being misleading and confusing. Back on topic, I see general support for straightening out intersections where a road has continuous dual carriageways on both sides, but Minh's specific cases make a lot of sense to me: we should not overcomplicate situations and make them less legible and less true to ground truth: http://nguyen.cincinnati.oh.us/minh/osm/talk-us/braided_intersections/remick_before.png versus http://nguyen.cincinnati.oh.us/minh/osm/talk-us/braided_intersections/remick_after.png where I do prefer the first solution. One followup question I do have is about one of the other examples of elaborate intersections Minh raised, the Continuous Flow or or XDL intersections (example http://www.openstreetmap.org/browse/relation/1284976), I would prefer to put a no-U-turn restriction on http://www.openstreetmap.org/browse/node/1002992385 - agreed? Thanks again for all your feedback. -- Martijn van Exel OSM data specialist Telenav http://www.osm.org/user/mvexel http://wiki.openstreetmap.org/wiki/User:Mvexel http://hdyc.neis-one.org/?mvexel _______________________________________________ Talk-us mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-us
