> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:talk-gb- > [EMAIL PROTECTED] On Behalf Of Gregory Williams > Sent: 30 September 2008 15:56 > To: Andrew Chadwick (mailing lists); [email protected] > Subject: Re: [Talk-GB] Cycle lane in one direction only > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:talk-gb- > > [EMAIL PROTECTED] On Behalf Of Andrew Chadwick (mailing > lists) > > Sent: 30 September 2008 15:29 > > To: [email protected] > > Subject: Re: [Talk-GB] Cycle lane in one direction only > > > [Snip] > > > > We'll probably have to introduce a new tag to say on which side of > the > > road the cycle lane(s) lie, relative to the direction of the way's > > arrow. What about adding something like: > > > > cycleway:left=<any value permissible for cycleway> > > cycleway:right=<any permissible value for cycleway> > > > > and stating explicitly that the existing cycleway=* definition still > > means both sides: cycleway=FOO would imply both cycleway:left=FOO and > > cycleway:right=FOO. > > That seems sensible to me. It's something I've been wondering about as > well. I'm aware of several places where there is a cycle lane only on > one side of the road. For the moment they're tagged as if there is a > lane on both sides. > > Now we need to be able to render something like that. As noted in the > comments on Andy Allan's blog post about rendering cycle lanes [1] > Mapnik doesn't support rendering offset from the centre of a line. I > think the same is true for Osmarender? I guess that it would be > possible > by manipulating the geometry accordingly in the Postgres query for > Mapnik (though a tremendous hack).
First of all, here's the URL I managed to miss: [1] http://www.gravitystorm.co.uk/shine/archives/2008/08/17/hill-colouring-o n-the-cycle-map/#comment-42219 Secondly, I've just realised that manipulating the geometry like I suggested above would be even worse -- it wouldn't be able to cope with multiple zoom levels. Oh well, the idea was a hack anyway... Gregory _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
