DEM Data

[trainmad]

Hi chaps,

Noticed the link in the Route Building Tutorial doesn't work. Anybody know of any other places to get DEM Data for the UK from?

Cheers,

Paul

[FoggyMorning]

DEM Files created from the Ordnance Survey Panorama Landform Dat [22740312 bytes] - GB-N60-N57.rar File ID: 24986 Date: 04 Oct 2010 - 970 Downloads

DEM Files created from the Ordnance Survey Panorama Landform Dat [28039607 bytes] - GB-N56-N55.rar File ID: 24985 Date: 04 Oct 2010 - 1110 Downloads

DEM Files created from the Ordnance Survey Panorama Landform Dat [21205694 bytes] - GB-N54-N53.rar File ID: 24984 Date: 04 Oct 2010 - 1913 Downloads

DEM Files created from the Ordnance Survey Panorama Landform Dat [16800419 bytes] - GB-N52.rar File ID: 24983 Date: 04 Oct 2010 - 1451 Downloads

DEM Files created from the Ordnance Survey Panorama Landform Dat [25057344 bytes] - GB-N51-N49.rar File ID: 24981 Date: 04 Oct 2010 - 2158 Downloads

These are fairly recently released DEM files from Ordnance Survey. There are some issues are certain latitude boundaries which cause a "Something Bad Has Happened" error in Railworks (for instance, the tiles immediately adjoining the 51-52 degree north boundary). At these points it is necessary to substitute in the slightly lower resolution files from here http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/

And this handy map shows which DEM file covers which area

UK 1 degree map grid for 90M DEM Route Builders [161124 bytes] - UK_1deg_grid.zip File ID: 7390 Date: 03 Dec 2003 - 1761 Downloads

Hope this helps

Steve

[bigvern]

http://www2.jpl.nasa.gov/srtm/

Best to go to the parent site then via the Public Data... link, then the USGS DDS link (not the seamless link).

That brings you into the root directory of the server where they happen to be keeping the files this month (which is why the link frequently expires).

Alternately, there's the enhanced UK data in the file library here, Files 24981 through 24986. (Edit: As noted above in the post that beat me to it!).

However you might still need the NASA files as backup when working near certain latitude line boundaries, as the high res data causes RW to lock up when hitting the T key.