[postgis-users] How do you use PostGIS Raster?

[Pierre Racine]

>For the second thing: Landsat scenes are ~7000x8000 pixels; ST_DumpAsPolygons() gives 
va huge set of geometries. The MODIS fire perimeters are also huge. The first step is a 
>"global" (image-wide) analysis. It was very slow when I tried it. We need an ST_Intersection 
>that returns a clipped raster; and we also need an ST_Union() or ST_Collect() which returns 
>an aggregated raster. 

What if you tiled your landsat in smaller tiles (100x100)?

Pierre