On Thu, Mar 18, 2010 at 9:06 PM, Robin Paulson <robin.paul...@gmail.com> wrote: > On 19 March 2010 01:35, Andy Allan <gravityst...@gmail.com> wrote: >> Are you being offered a 20m DEM, or just the contours generated from a >> DEM? The DEM is more useful (it's a grid of spot-heights) since it can >> be used to generate hillshading etc too. > > i don't know what a DEM is unfortunately > > this?: http://en.wikipedia.org/wiki/Digital_elevation_model
Sorry, my bad. Yes, that's what I was meaning. It's basically the raw data behind contours, hillshading and so on. Cheers, Andy _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
