[OSM-talk] offer of 20m contour data

[Andy Allan]

On Thu, Mar 18, 2010 at 9:06 PM, Robin Paulson <robin.paulson at gmail.com> wrote:
> On 19 March 2010 01:35, Andy Allan <gravitystorm at 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