Richard Fairhurst wrote: >Sent: 22 January 2008 4:07 PM >To: talk@openstreetmap.org >Subject: Re: [OSM-talk] Mapping canals > >matthew-osm wrote: > >> With up to about a 20m error (which in practice seems to be about right), >you >> might be out by ~65ft. >> >> (Granted, both points are likely to be out by the same amount if taken at >the >> same time, but it's still a bit close IMO.) > >Yup. > >Actually the real issue is mapping tolerances. On the UK canals, every >inch counts in lock length. There are locks that our 71ft 6in boat >won't get through, but would if it were a few inches shorter. And >there's no way my OSM skills are l337 enough to be able to draw a way >precisely 71ft 6in long. >
Well, we could if we had some basic geometry tools in the editors :-) Cheers Andy >cheers >Richard > > >_______________________________________________ >talk mailing list >talk@openstreetmap.org >http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
