[postgis-users] raster efficiency

[Pierre Racine]

> I found quite to calculate a profile: it takes approx 1-2 secondes to calculate a
> profile of 4-6 points.
> 
> Is there any thing that I can do to fasten the process?

How do you compute your profile?

> What is the best strategy: having more small rasters or a single big one?

For raster/vector operations, smaller raster tiles (10x10) is generally preferable/faster.

Pierre