Ian Dees wrote: > If you want to do something else, you'll need some other tool. osm2pgsql's > schema and database is a good place to start if you want to generate data > of > some format that expects polygons, but I don't know of any tools that will > let you query osm2pgsql's schema using OSM tags.
Here is a live example made with MapServer WMS. Map comes from osm2pgsql schema and query hits OSM tags which are stored in a hstore column. All the tag/value combinations are supported and can be tested, this is live map without any tiles or cache. Just give some other values for &tag= and &value= My demo can only pass one tag/value pair but it would not be hard to accept more pairs combined with ANDs and ORs. http://188.64.1.61/cgi-bin/mapserv?map=/usr/map/osm-mapserver_i.map&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&WIDTH=1059&HEIGHT=687&LAYERS=sea,borders,POI_free_query&TRANSPARENT=TRUE&FORMAT=image%2Fpng&BBOX=-574187,6558020,1615375,7978444&SRS=EPSG:3067&STYLES=&tag=shop&value=convenience If you want data instead of a map, this WFS request is returning exactly the same data that was used for rendering the image http://188.64.1.61/cgi-bin/mapserv?map=/usr/map/osm-mapserver_i.map&REQUEST=Getfeature&SERVICE=WfS&VERSION=1.1.0&typename=POI_free_query&tag=shop&value=convenience Polygons are supported as well, look at the map with red lakes http://188.64.1.61/cgi-bin/mapserv?map=/usr/map/osm-mapserver_i.map&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&WIDTH=1059&HEIGHT=687&LAYERS=sea,borders,polygon_free_query&TRANSPARENT=TRUE&FORMAT=image%2Fpng&BBOX=-574187,6558020,1615375,7978444&SRS=EPSG:3067&STYLES=&tag=natural&value=water It would mean rather a lot of vector data through WFS. This WFS query with resulttype=hits reveals that there are 53458 natural=water tags in osm_polygon table where the data are coming. http://188.64.1.61/cgi-bin/mapserv?map=/usr/map/osm-mapserver_i.map&REQUEST=Getfeature&SERVICE=WfS&VERSION=1.1.0&typename=polygon_free_query&tag=natural&value=water&resulttype=hits -Jukka Rahkonen- _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
