On Tue, 2008-12-09 at 11:51 +0100, Maarten Deen wrote: > > On Wed, Nov 19, 2008 at 2:29 PM, Simon Ward <simon at bleah.co.uk> wrote: > > > or a layer that allows you to select what POIs to display (although a > > > long list of POIs might be a little unwieldy). > > > > This map already exists: > > http://www.lenz-online.de/cgi-bin/osm/osmpoinit.pl/ > > That solution is painfully slow and appears to be very awkward. In > Firefox, it reloads, displays, reloads, displays, etc... and seems > to do that for every single POI it finds. That can never be a > viable solution. > > I was looking at the same for one of my other hobbies too and used > the OpenLayers POI example that's in the wiki at > <http://wiki.openstreetmap.org/wiki/Openlayers_POI_layer_example>. > I used that to create a map with all banks and ATMs in the > Netherlands <http://www.maasluip.nl/ebt/openlayer.html> > That works for me in Firefox, but it works less good in IE7 and quite > poorly in IE6. Apparently IE has a problem with the number of POIs > in the map (some 1200). As the list is currently fixed this is also > not a viable solution for the general public. > > What you would want to make is a database backend (which can be the > OSM database but can also be a dedicated one) and an OpenLayers > solution that can display POIs on demand. > The selection of POIs can be something like the map at lenz-online > de, or you can make something that is more grouped per type of POI. > > That way you do a select on the database with with the boundingbox > of the map and the selection of POIs you like and that returns all > POIs you want, and displays them on the map. > The database query thing is easy, and the displaying thing should > also be possible with OpenLayers. I think the OSM Inspector > <http://tools.geofabrik.de/osmi/> does something like that.
Also see <http://wiki.openstreetmap.org/wiki/OpenLayers_Dynamic_KML> for an example (yes i should update that page, but what is there works). Sander _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
