here's a prototype (tracking ships in this case): http://www.sailwx.info/shiptrack/researchships.phtml Position data comes via FTP into MySQL, and is stored naively (a LAT column, a LON column, ship ID, position time). H _______________________________________________ Mapserver-users mailing list Mapserver-users@lists.gis.umn.edu http://lists.gis.umn.edu/mailman/listinfo/mapserver-users