Lars Aronsson wrote: >Sent: 25 March 2008 2:19 PM >To: [email protected] >Subject: Re: [OSM-talk] Cycle lanes > >OJ W wrote: > >> Sounds very similar to the cycleway tagging in Bedford; treat it >> as a separate way if it's not on the road, which makes it easy >> to show if it takes detours away from the road: > >But I want it to be just next to the street, with no gap and no >overlap, and getting this right requires that I know how it will >be rendered (which I don't), and there still is no chance I would >get it perfectly right. It does make more sense to draw one way >at the street's centerline and then use attributes to describe all >the various lanes for cars, buses, bikes and sidewalks as a list >with the width of each lane in metres. How far away is it that >Osmarender or Mapnik would render something like that? > >We have this problem with motorways already, that two ways >(northbound and southbound) run perfectly parallel in reality, but >on the map the distance between the ways is not always the same. >If this was mechanics, I would put a spacer washer between them. >
Most of the UK motorway network is not strictly parallel. In some places there is bigger divergence than a metre or two, elsewhere it varies because the width of the central reservation varies, especially to accommodate sight-lines around tighter curves. So, while I agree in general that probably the majority of the network is effectively parallel its not always the same distance from centre to centre of each carriageway. Cheers Andy > >-- > Lars Aronsson ([EMAIL PROTECTED]) > Aronsson Datateknik - http://aronsson.se > >_______________________________________________ >talk mailing list >[email protected] >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
