2009/10/7 swanilli <[email protected]>: > I can't offer an opinion on Sydney-Melbourne, but I spend a fair bit of time > on trains and have checked the OSM rail data for Sydney-Newcastle, > Sydney-Richmond, Sydney-Katoomba, Sydney-Bomaderry and Sydney-Moss Vale. > This is in metal carriages and except for one occasion, my GPS reported more > than acceptable accuracy (say 6 - 8m) and I concluded that there was no need > to adjust the OSM entries. The problem, as I alluded to in another posting, > is what happens when there are large land features next to the track or > tunnels. > > The exception was one trip south when the GPS was unable to get a signal at > any time. Since the carriage was identical to lots of others in which I had > no problem I concluded it must be the metallic coated glass. I have had the > same problem with Victorian VLine carriages. > > While I accept that theoretically a large metal box might be a problem, my > own field observations indicate that in practice it need not be. You can > only tell by trying your GPS out in the carriage you travel in.
On one of the wiki pages it talks about something like this with European trains, and unless you get a GPS lock before boarding the train you most likely won't get one at all, however once you have a lock it's easier to keep it. _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
