On Tue, Nov 30, 2010 at 6:57 PM, David Murn <da...@incanberra.com.au> wrote: > On Wed, 2010-12-01 at 12:01 +1300, Robin Paulson wrote: > >> > That's nonsense. A way does not show a right of passage. A >> > particularly tagged way shows a right of passage. And a park is a >> > particularly tagged way. > > No, a park *CAN BE* a particularly tagged way.
Can be? How can you represent a park in OSM without using a way which is tagged with leisure=park? > Just like a road, if it > isnt tagged properly with oneway/access/barrier/etc, the routing will be > inaccurate. Correct. What are you getting at? > Actually, the fact that its not tagged correctly is a big part of the > issue. The renderer has to make assumptions if its not tagged. If > there was a tagging scheme to indicate that an area was traversable, > then routing engines could start to use it, There is such a tagging scheme. It is described at http://wiki.openstreetmap.org/wiki/Access > but Id hate for a routing > engine to try and take a short cut 'as the crow flies' through an area > which hasnt got ways marked to follow. I'd love it. It's a feature I'm quite looking forward to. One day OSM will be able to route me from Linkwood Avenue to Pine Bay Drive through the park (http://www.openstreetmap.org/?lat=28.07187&lon=-82.550402&zoom=18&layers=M), saving me 50 minutes of walking. > To take that to a further level, > what if someone marked a national park as an area, should routers simply > show a route ATCF or should it only route through a national park area > if there is a way to follow? Routers shouldn't route through all areas the same, any more than they should route along all non-areas the same. An area tagged with leisure=park wouldn't have the same access defaults as an area tagged with building=yes. And an area representing a national park should not be tagged with leisure=park. This is explicitly stated at http://wiki.openstreetmap.org/wiki/Park "Parks in rural locations (e.g. areas named "National parks") are a totally different kind of thing. leisure=nature_reserve and boundary=national_park should be used, and not this leisure=park tag." _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk