Jonathan Bennett <openstreet...@jonno.cix.co.uk> writes: > Matthias Julius wrote: >> What is the definition of a category here? >> >> I would call a category something like "buildings that are 29 strories >> tall". An architect I would call an (abstract) object that can have >> other attributes as well like a birthdate, an email address and so >> on. (Whether all this belongs into OSM is another debate). >> > > It may well be an abstract object, but it's not a geographical one so it > doesn't belong in OSM. Relations are a way of linking one geographical > feature to another for some geographical reason -- part of the same > long-distance route, or opposite banks of a waterway for example. In > this case there's no geographical link between two buildings from the > same architect -- you could just as easily say that all buildings > belonging to one company should be part of a relation, but that too > would essentially be categorisation.
This is all true and after rereading http://wiki.openstreetmap.org/wiki/Relations/Relations_are_not_Categories I agree that the architect issue is a category in that definition. I just prefer to explicitly link objects together over duplication of data. Matthias _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
