"Why not convert the raster cell centers to points , do a query on the point layer for a square centered on the raster derived point whose dimensions are given by the number of tiles in your neighborhood. return the number of points divided by the area of the square. ( neighborhoods are usually odd numbers of cells, 3x3, 5x5, etc so you have an equal number around the center cell)"
Thanks for the reference Doug. What you suggest does sound like it could work, the only thing is that I would need to have this output as a Raster as I am then looking to use it with two other rasters to do a weighted combination of them e.g. [rast1 * 0.2] + [rast2 * 0.5] + [rast3 * 0.3]. Do you know how if I could easily rasterise the output of what you've suggested? Only reason is I'm working on it for a dissertation project and I've left myself little time left to consider this. Kind Regards, James ----- GIS Undergraduate -- View this message in context: http://postgis.17.n6.nabble.com/Simple-Point-Density-Surface-tp4917343p4917632.html Sent from the PostGIS - User mailing list archive at Nabble.com. _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
