Re: [talk-au] Mapping railway lines

2009-12-23 Thread John Henderson
On 7 Oct 09, I wrote: > Has anyone had success using a GPS unit inside a metal railway carriage > to map a railway line? > > I notice that parts of the main line between Sydney and Melbourne are > missing, eg: > http://www.openstreetmap.org/?lat=-34.7446&lon=147.886&zoom=14&layers=B000FTF I n

Re: [talk-au] Mapping railway lines

2009-10-08 Thread Greg Harper
I have had success with the bullet train from Osaka to Tokyo and Tokyo to Narita. I had my GPS (Garmin Vista, which I have upgraded to a Vista HCX) on the window shelf, and got good accuracy. The only problem I had was the numerous tunnels! Here's my trace from Tokyo to Narita. http://www.openstre

[talk-au] Mapping railway lines.

2009-10-07 Thread Nick Hocking
If you get on a heritage train then these have windows that can be opened and a gps trace is no problem. Last weekend I surveyed the track from Wollongong through to Moss Vale. (riding behind the relaunched steam locomotive - 3265) In sydney you can get a signal on the Tangara trains but I couldn

Re: [talk-au] Mapping railway lines

2009-10-07 Thread John Henderson
John Smith wrote: > 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. I've started using a amplified external an

Re: [talk-au] Mapping railway lines

2009-10-07 Thread John Henderson
Liz wrote: > I drew in railway line from landsat (hopefully that was marked as source) and > lined it up with crossings and bridges. > If you have better data, please move the railway. > > I haven't managed to get a trace on any railway because I seem to be limited > to walk, bike, car, plane.

Re: [talk-au] Mapping railway lines

2009-10-07 Thread Liz
On Wed, 7 Oct 2009, John Henderson wrote: > Has anyone had success using a GPS unit inside a metal railway carriage > to map a railway line? > > I notice that parts of the main line between Sydney and Melbourne are > missing, eg: > http://www.openstreetmap.org/?lat=-34.7446&lon=147.886&zoom=14&laye

Re: [talk-au] Mapping railway lines

2009-10-07 Thread John Smith
2009/10/7 swanilli : > 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 occasio

Re: [talk-au] Mapping railway lines

2009-10-07 Thread swanilli
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

Re: [talk-au] Mapping railway lines

2009-10-06 Thread John Smith
2009/10/7 swanilli : > The problem is you will find not with the metal railway carriages but with > the coating on the windows. I find my GPS works well in almost all carriages > (I get accuracy typically of 6 m). The metal box is a large part of the problem, the windows are just usually the easie

Re: [talk-au] Mapping railway lines

2009-10-06 Thread swanilli
The problem is you will find not with the metal railway carriages but with the coating on the windows. I find my GPS works well in almost all carriages (I get accuracy typically of 6 m). Occasionally though, I get no signal in carriages that have been fine in the past, the only difference seems to

[talk-au] Mapping railway lines

2009-10-06 Thread John Henderson
Has anyone had success using a GPS unit inside a metal railway carriage to map a railway line? I notice that parts of the main line between Sydney and Melbourne are missing, eg: http://www.openstreetmap.org/?lat=-34.7446&lon=147.886&zoom=14&layers=B000FTF I'd consider doing the trip on the XPT