[postgis-devel] ST_Value performance

[Sandro Santilli]

On Tue, Jan 31, 2012 at 04:56:38PM -0500, Pierre Racine wrote:
> > Alright, now I have all my 200k values I'll want to put back into the raster. Is
> > there an aggregate form of ST_SetValue ?
> 
> How would you see such an aggregate?

It would take a set of (x,y,band,value) or (geometry,band,value) in input
and incrementally transform a raster to set the values.

Didn't really think about how you can initialize an aggregate function to provide
a target dimension for the output raster.

--strk;

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