Location Co-ordinates - LSWR phase 1

metroshed · Post by **metroshed** » Wed May 12, 2004 10:58 pm

I am currently engaged in a project on which the result will be (hopefully) a route based on the old LSWR from Plymouth to Salisbury (and if I get really adventurous onwards to Waterloo). All DEM terrain tiles are in place but would like some help in finding exact locations (lat/long).

Where could I find such exact coordinates for example Plymouth, Barnstaple, Okehampton, Tavistock, Exeter, Yeovil, Salisbury etc.. etc..

Then hopefully Marker files with these coordinates could be made to assist building.

Any help would be appreciated.

Martin

longbow · Post by **longbow** » Thu May 13, 2004 1:03 am

Try multimap.com. Zoom in to the location you want and it gives you both UTM and lat/lon data.

Christopher125 · Post by **Christopher125** » Thu May 13, 2004 5:48 am

Hi

Streetmap is probably the best - zoom in to the OS scale, and then after clicking with the mouse to get an arrow, at the bottom there is a link to coordinates.

Chris

jimmyladd · Post by **jimmyladd** » Thu May 13, 2004 2:29 pm

Arn't msts coordinates about ten miles out?

Christopher125 · Post by **Christopher125** » Thu May 13, 2004 3:54 pm

jimmyladd wrote:Arn't msts coordinates about ten miles out?

No, although there can be minor Tile skew, although it only really affects really long routes I believe.

Chris

arabiandisco · Post by **arabiandisco** » Thu May 13, 2004 4:01 pm

Christopher125 wrote:
jimmyladd wrote:Arn't msts coordinates about ten miles out?
No, although there can be minor Tile skew, although it only really affects really long routes I believe.

Chris

long enough to be affected by the curvature of the earth?

johny · Post by **johny** » Thu May 13, 2004 5:58 pm

Martin,

This, I think, is the answer you were looking for.

â€œLSWR West Country Lines Then And Nowâ€

Damo · Post by **Damo** » Thu May 13, 2004 6:12 pm

Would the line to Waterloo be set in the present day? I live at an intermediate town between Basingstoke and Woking!

mattcarey · Post by **mattcarey** » Thu May 13, 2004 6:30 pm

it would not be set to the present day, as the line from Plymouth to Okehampton via Tavistock North does no longer exist

I have been around Tavistock north on the viaduct. There is a picture of Tamerton Foliet station as it is now on my website - http://www.mattcarey.fotopic.net

Shame the line shut down. If you go onto Dartmoor or north of the moors you fcan see most of the old railway places

Regards

Matthew

Christopher125 · Post by **Christopher125** » Thu May 13, 2004 8:28 pm

arabiandisco wrote:
Christopher125 wrote:
jimmyladd wrote:Arn't msts coordinates about ten miles out?
No, although there can be minor Tile skew, although it only really affects really long routes I believe.

Chris
long enough to be affected by the curvature of the earth?

Hi

I expect (but dont quote me on this) is that your route would probably have to be 400 miles North-South for any real difference, although the best way to find out is to go to the bottom and top of your route and compare what you can see with what you should be able to see.

Chris

saddletank · Post by **saddletank** » Thu May 13, 2004 8:40 pm

Christopher125 wrote:go to the bottom and top of your route and compare what you can see with what you should be able to see.

Chris

How on earth would he know what he should be able to see? What is it he's trying to see? I have found that at the latitude of London, MSTS' lat and long disagree with a civilian quality GPS system to about 100m. That is enough to seriously screw up any marker file or track profile built with (say) TsTools if a route builder is making accurate terrain from DEMS.

However TsTools will allow you to accurately register a scanned section of (old copyright expired) OS map and your MSTS tiles then slide the image of the map the few metres needed so the map fits the DEM generated topography exactly. Then you build your marker file from the adjusted map overlay.

It means your route will follow MSTS' slightly wonky lat & long instead of the real planet earths lat & long but the error will be completely un-noticable and irrelevant to all users and will proably only ever be an issue for the author.

Christopher125 · Post by **Christopher125** » Thu May 13, 2004 9:13 pm

Hi Martin

I'd kinda forgotten he was in London..., anyway, what I am saying is based on my own expieriences - I have based what I can see from the position on the route from lat long measurements, with photos, and I can see that it is the right place, however, proper land features are needed for this like valleys, hills etc, something London is somwhat lacking in.

Chris

d1010 · Post by **d1010** » Thu May 13, 2004 9:45 pm

[quote="metroshed"]I am currently engaged in a project on which the result will be (hopefully) a route based on the old LSWR from Plymouth to Salisbury (and if I get really adventurous onwards to Waterloo). All DEM terrain tiles are in place but would like some help in finding exact locations (lat/long).

Where could I find such exact coordinates for example Plymouth, Barnstaple, Okehampton, Tavistock, Exeter, Yeovil, Salisbury etc.. etc..

Then hopefully Marker files with these coordinates could be made to assist building.

Any help would be appreciated.

If you need any pictures in east devon i could help

longbow · Post by **longbow** » Sat May 15, 2004 2:05 pm

Creating a marker file from lat/longs will be misery, since you'll soon find that you want markers not just for stations but for track beds, bridges, crossings, tunnels, junctions, buildings...

You'd be much much better off using TSTF or TS Tools. Once you have a map registered then you create a marker file by just clicking on any point you need to mark - fast and accurate. And if you use the map for terraforming, the markers will always be in synch with your landscape. As Martin says, there's no point having your markers in the right place if your scenery isn't.

Atomic Systems

Location Co-ordinates - LSWR phase 1

Location Co-ordinates - LSWR phase 1

Re: Location Co-ordinates - LSWR phase 1