Again me... I need to incorporate geographical positions into the database to limit search results to a defined local area. I am unsure if I should just use to new NumericalField feature in Lucene 2.9.1 (as Michael recommended) or if I should use the Cartesian Tier algorithm implemented into the Spatial.Net contrib. Did someone managed already something with this contrib? I am wondering how much would be the performance gain to use the Cartesian grid in comparison to a vanilla RangeQuery filter on latitude and longitude?
At least I will use the DistanceSort filter of Spatial.Net I guess, it seems nicely done. Markus
