> This is a three minute video on, mostly, maps and addresses. Probably applies > to boundaries too. http://sivers.org/jaddr
Interesting. Although, I don't know what it is, but TED speakers always manage to creep me out and sound supremely sanctimonious, no matter how enlightening their subject matter is. Back to OSM: as a traffic engineer, I'll submit that we realign roads all the time, to straighten curves, widen, etc., but, somehow, I don't think the administrative boundaries are changing with them. The OSM concept of having points as first class entities in the data model, rather than just waypoints on polylines, makes it very tempting (and convenient) to "glue" edges of disparate entities. On a small scale, this is handy: that park that fills up a block or cemetery that borders a road renders a lot better if you glue them to the surrounding streets. But add a point to one or the other, and, depending on your editor, it's not guaranteed to be added to both entities. Oops. Also, you have to consider that the current OSM model of modeling only centerlines may change one day (say, tomorrow), to, say, modeling lanes, curbs, or edgelines. Then what...which lane is the administrative boundary? I'd rather not go there. _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
