Erik Johansson wrote: > 3. specify a derived tag, as with localised names: > > name:absent=yes > > disadvantage: might accumulate to a lot of extra tags in the database, > but it only needs to be added if there really is uncertainty about > the situation. > > So... how about doing T:absent=true? The interpretation of which being: > tag T is not there in the real world, as opposed to only not there in > the database.
I think this is the best way. OpenStreetMap is a work in progress. There are holes in the data. We need to have some way to specify that the lack of tag T is not a flaw. There are some tags that nearly always go together, like the names on some roads. We should have a way to mark this. Rory _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk