[OSM-talk] Own maps with hill shading and routes using mapnik

[David Earl]

On 15/09/2008 22:07, Donald Allwright wrote:
> The theory is that 
> if the SRTM data include an altitude reading for the lake itself (I 
> haven't actually checked this yet!), I should be able to use an approach 
> similar to what you suggest to get a much more accurate map. The holy 
> grail would be to be able to click somewhere within a lake, and the 
> software to automatically generate a perimeter. However I suspect that 
> will be a long way off, if it ever happens.

But will the accuracy be any better? SRTM seems to be 3 arc seconds 
outside the USA = approx 90m of latitude per pixel.

David