2008/9/22 Mark Cave-Ayland <[EMAIL PROTECTED]>: >>> I am implementing a map application. There are towns with altitude, >>> longitude and population. >>> One of the tasks is to be able to query N biggest (by population) >>> towns within a rectangle. > Have you considered using PostGIS? (http://postgis.refractions.net). It > implements the OGC SFS for geometries and is compatible with a large number > of open source viewers/tools such as Mapserver, Geoserver, QGIS, OGR etc...
Mark, thanks for the suggestion. I examined PostGIS some time ago. It is too complex for my simple task and it gives no advantages for me: For spatial indexing it uses the same GiST-based R-tree. And PostGIS does not offer that "population" or "priority" queries I need. Anton. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
