Hello all, I want to be able to implement raster models like ArcInfo GRID. To do this I would need to be able to create new rasters based on existing rasters. For example, "rain_yr = sum(rain_01 -> rain12)". Has anyone got any suggestions on a raster GIS backend for Mapserver? Something like PostGIS, but for raster woiuld be great. TIA, Antti