Hello all, I'm new to postgis and I'm hoping someone might help advise me! I have a 4 million point grid of lat lon pairs that have an associated the_geom. I have a 2,000 point feature set with an associated the_geom. I'd like to find the nearest feature to each grid point. I wrote the statement: select min(distance(f.the_geom,g.the_geom)) from features f, grid g group by ao.gid to obtain my desired result set. The only problem I had is that this query took 9949764 ms (approx 2.5 hours). Granted it's a large dataset, but I'd like to believe that this calculation can be done more quickly. Any tips??
Thanks, Sky _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
