On Fri, 27 Sep 2019 at 11:02, Marc Gemis <marc.ge...@gmail.com> wrote:
so disused:amenity=pub ; building=pub (it looks like a pub); > building:use=house (or is it :usage?) > Erm, I can't think of any pub I've ever been in or past that was in a building that could be described as looking like a pub. All but three or four looked like houses, because that's what they originally were. Back in the decades when Cardigan was one of the busiest ports in the country, around half the houses in the old town were pubs at one time or another. Most churches and chapels have a distinctive architecture, as do most supermarkets. Most pubs and many small shops, if you removed the signage, would look like houses, because that's what they originally were. In any case, there is disagreement as to whether building should ever take any value other than "yes." Many buildings that have distinctive styles have other tags indicating their function, so the reasoning is that you don't need building=church if you have amenity=place_of_worship + religion=christian. Counter-argument: Christian places of worship can be chapels, churches, cathedrals with distinctive architectures, or a building not recognizably a place of worship: a chapel near me is considering moving out of its impressive chapel and into an industrial unit so it has more parking space. Another counter-argument: we don't have any tag indicating residential usage other than building=house, so with one reason for building to have a value other than yes, there's no compelling reason to disallow other values. > > - watermills (no longer functioning, but the outside still looks like > a watermill, now used as house, etc.) > A lot of those around here. Some retain the wheel and leat, some retain just the wheel, some retain neither. The clue is in the name, which is (or includes) Felin or Melin (but there are also the Welsh equivalents of "Miller's Cottage" and "Miller's House" so it's not as simple as just looking for "Felin" or "Melin." They could be mapped with building=windmill/watermill/bunker and > disused:man_made=windmill/watermill or disused:military=bunker. > I assume that disused=yes could also be used on bunkers, as they > usually have no other function today. So there is no confusion with > any other tags to which the "disused" could be applied. > I would say disused applies only to things that are not used at all, as opposed to conversions. As somebody reminded me earlier in the thread, if it's been converted to other use then was:foo=bar is better. At which point some people will shout "OSM doesn't map history." Which is good as a general rule but not as a universal rule. Pubs appear in a lot of website listings (beer guides, reviews, etc.) and armchair mappers spotting one of those may add a pub that is no longer a pub. Consumers may spot a pub in one of those guides and look for it on the map, assuming that if a building has the same name as the pub (as several pub conversions I know of do) that it really is a pub. Using was:amenity=pub or disused:amenity=pub as appropriate makes the map slightly more useful. -- Paul
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