[postgis-users] Rasters - world wide SRTM dataset for altitude profile?

Sandro Santilli strk at keybit.net
Tue Feb 14 06:00:15 PST 2012


On Tue, Feb 14, 2012 at 12:54:54PM +0100, Frederik Ramm wrote:

> I wonder if, with PostGIS raster support, I could:
> 
> * simply import a world-wide SRTM data set (I'm sure people must
> have done that already?)
> * and then efficiently query the nearest raster values for a given
> linestring geometry, thereby getting an altitude profile?

Yes and yes !

> Without having checked the limits of PostGIS raster support, it
> sounds to me as if this could be much simpler than the old approach.
> Can you see any obvious problems with that idea, or should I go
> ahead and try it?

I think you should be fine to go ahead and try it.
Let us know how it goes !

--strk;



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