> and contours from SRTM (or even the OS's own contour data, if that's > better than SRTM?)
To give you an idea of what the contours from the OS "Land-Form PANORAMA Contour" dataset look like, I've taken a small section of the Cheshire Peak District, centred on the hill Shutlingsloe. See what I've done here; http://www.flickr.com/photos/19863...@n00/4490652840/sizes/o/ Literally all I've done is taken the points from the dxf file, and plotted them using MS Excel - and it's just straight-line segments drawn between every point. I've then coloured all of the contours in a red-brown colour - except for the 300m contour (green), 400m contour (purple), 500m contour (blue). Just like the OS - I've made every 50m contour bolder. The dxf file itself just contains a list of lines, with points contained within the line with x,y,z coords. There are contours, lake boundaries, coastlines & spot-heights. I think there are a couple more types in some files. Compare and contrast that against the cycle map which shows the contours http://osm.org/go/eu3FpOHq-?layers=00B0FTF The OS one certainly looks more detailed. By inspection, it also looks to agree with my copy of Landranger 118. See here; http://www.streetmap.co.uk/map.srf?X=397663&Y=369556&A=Y&Z=120 _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
