Adrian Popa wrote: > Hello, > > I'm trying to accomplish the same thing and I followed your advice - > using vector + BBOX, but I hit a snag - because my POI layer has a lot > of elements, I would like to enable this layer only for a certain zoom > level (when the user is really close). Is there some standard > functionality for a layer - making it visible (and doing the queries) > only from a zoom level onwards?
That would be layer.minResolution and layer.maxResolution. Regards, Andreas. > > If I try to fix things server-side (not returning anything if the zoom > is to low), openlayers will not query again because the zoomed BBOX is > included in the original BBOX and it thinks nothing changed... > > Thanks, > Adrian > > Andreas Hocevar wrote: >> Hi, >> >> this answer Eric gave to a similar thread in January should get you there: >> http://openlayers.org/pipermail/users/2009-January/009709.html >> >> Regards, >> Andreas. >> >> On Mon, Jun 29, 2009 at 8:42 AM, Alexandru >> IOVANOVICI<iovana...@gmail.com> wrote: >> >>> Hello, >>> >>> I'm working on a application in wich i have some vector data (a kml file >>> with paths) wich i have to display over a map. I have the data in a database >>> and i can create the kml on-the-fly with a php script, based on some url GET >>> params. I want the create a kml file wich contains only the lines wich are >>> in the current viewport and at a level of detail depending on the zoom >>> level. So, when the user pans the map i shoud update the kml file and >>> display the new data. Same thing when the user zooms the map. My PHP script >>> and kml file are tested and working ok. >>> The problem is how do i code the javascript for this layer. For a similar >>> POI layer i used the instructions from here >>> http://wiki.openstreetmap.org/wiki/OpenLayers_Dynamic_POI and it is ok. But >>> in this case i have no getUrl arg to the constructor. >>> How can be done this ... because i'm sure there is a solution ... >>> >>> Thank you, >>> >>> Alexandru IOVANOVICI >>> >>> _______________________________________________ >>> Users mailing list >>> Users@openlayers.org >>> http://openlayers.org/mailman/listinfo/users >>> >>> >>> >> >> >> >> > -- Andreas Hocevar OpenGeo - http://opengeo.org/ Expert service straight from the developers. _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users