2010/6/16 John Smith <deltafoxtrot...@gmail.com>: > The problem with using subjective tagging is you can't easily quantify > it, where as things like air traffic is objective.
But what you can do is compare it to the surrounding / context / nationwide / worldwide. It's like the highway key for tertiary, secondary, primary. Maybe you can't tell initially but with more progress of the map it becomes almost obvious, which level a street is to put in. For airports there are other criteria (like international airport meaning that scheduled international flights exist (and not simply that you can take your cessna, lift off and fly to another country). Of course the fact whether there is a paved runway, how long it is (can big airplanes take off?) etc. are also to be concerned. Which of these criteria are to be applied in which context / decision will turn out when you start mapping it. Beeing a crowdsourced map I guess that subjective judgement will arrive at a similar result than "objective" criteria. cheers, Martin _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
