[Geowanking] Elevation Database

Frank Warmerdam warmerdam at pobox.com
Sun Dec 2 16:58:51 PST 2007


Brandon Martin-Anderson wrote:
> Hey Wankers,
> 
> What's your favorite way to (efficiently) store and (quickly) query 
> (very) large amounts of elevation data?
> 
> Right off the top of my head, one way is to store elevation profiles as 
> 3D lines in postgis, but that strikes me as kludgey. How would you do it?

Brandon,

Are you working with gridded elevation data?  If so, is there a reason not
to hold it in the obvious format, a raster file of some sort?  The
organization of the raster data can be optimized for various sorts of query
patterns (points, windows at varied resolutions, etc).

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org




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