On Wed, Jun 24, 2009 at 1:40 PM, Frankie Roberto <fran...@frankieroberto.com > wrote:
> Do relations solve the problem at all? If a track is part of a route > relation, then could a renderer use that as a means of aggregating the > tracks together? My hunch is that relations probably don't actually help much, unless you could rely on them being done consistently and accurately. The way to do it would be to 1) break every way up into short sections, probably by identifying adjacent nodes and creating extra nodes where required on the fly 2) ignore short ways that have nodes in common with other ways (ie crossovers) 3) count up ways that are near-parallel and have closeby starts. That wouldn't be particularly quick, and might be prohibitively slow. It'd certainly be a bit fiddly to write, and not something for a beginner-renderer (unless they've got a decade of hacking databases behind them). It'd be a lot easier for the tagger to do, and then any renderer could use the information. Richard
_______________________________________________ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
