Sebastian Spaeth <[EMAIL PROTECTED]> writes: > Matthias Julius wrote: >> Sebastian Spaeth <[EMAIL PROTECTED]> writes: >> >>> Pubs on the other hand would be a nice candidate for a POI overlay layer >>> that can be switched on/off. We could afford some more clutter then. >> >> And ideally this would not be a tiled layer. Instead the client >> applications would download pubs from XAPI and display an icon with >> caption on the map for each of them. Can OpenLayers do such a thing? >> It would be quite insane to try to host tiled layers for each POI type >> (pubs, restaurants, fast food places, gas stations, post boxes, ...). > > Yes, one layer per item would be insane. Having one switchable POI layer > for all kinds of POIs though would be quite feasible. Of course, more > control would be nice, theoretically....
The usefulness suffers greatly for an one-for-all POI layer. If you are interested in pubs and half the pubs are not shown because gas stations take all the room on the map (or vice versa) the result is far from optimal. > > Yes, OpenLayers can dynamically show stuff like that, and the recent > version even understands .osm files, I think. However, it becomes > incredibly slow with many points to draw. I once made a map of WLAN > hotspots in Zurich and it brought the browser to a halt. (FF3 is > supposed to be much better, I had tried that with FF2). This, of course, is a problem. Maybe Openlayers needs to limit the number of POIs is displays at a time. Matthias _______________________________________________ Tilesathome mailing list [email protected] http://lists.openstreetmap.org/listinfo/tilesathome
