In many cases you will be able to determine the area from the aerial images (thinking of Western European campsites). I assume that in the campsites you visited, the actual area was rather fuzzy and that the exact area will never been known, not ? OSM has no solution for fuzzy areas anyhow.
Is it difficult to obtain an approximation of the area when you already go through the effort to position all the amenities as individual nodes ? you can always leave a note or fixme tag to indicate that the shape has to be established. just my .5 cents regards m On Fri, Mar 27, 2015 at 12:37 PM, Jan van Bekkum <jan.vanbek...@gmail.com> wrote: > So if you don't know the real shape of the polygon it would be best to > create a placeholder polygon (like a circle - it will be clear that it is a > placeholder) and put all amenities inside it until the real shape is known. > > On Fri, Mar 27, 2015 at 10:33 AM Marc Gemis <marc.ge...@gmail.com> wrote: > >> Overpass understands this. When I look for all toilets in the "Zoo >> Antwerpen" with [1], I only find toilets in that Zoo >> >> regards >> >> m >> >> [1] http://overpass-turbo.eu/s/8qL >> >> On Fri, Mar 27, 2015 at 10:24 AM, Marc Gemis <marc.ge...@gmail.com> >> wrote: >> >>> >>>> OK, I did not know that ! Is this "is-in-polygon" test something that >>>> is already being done ? Examples ? >>>> >>> >>> Nominatim that adds the address of the building to the POI is an example >>> of a similar test / algorithm. >>> Sorry, don't know any other examples. But it just makes sense that you >>> do not have to define inclusion of something when you can determine that >>> from it's position. >>> >>> I also only know 1 website that supports the site relation, the >>> geschichtskarte for historical items >>> >>> regards >>> >>> m >>> >>> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging >> > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > >
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