Hi Eric, mmm... I don't understand exactly how to do it... Can you give me an example?
Thank you a lot, alessio :) Eric Lemoine wrote: > > Hi > > Have you tried creating two layers, one with a maxResolution option > connected to TileCache, and the other with minResolution connected to > MapServer? > > Cheers, > > Eric > > 2009/2/13, Alessio Di Lorenzo <[email protected]>: >> >> Hi guys, >> >> I'm developing a little webgis and I need to use some wms layer that are >> requested in two different ways: >> >> - when the map resolution is <= 305.7481130859375 I want to request the >> cached layer (with TileCache) >> >> - when the resolutione is > 305.7481130859375 I want to send directly the >> wms request to mapserver >> >> I did something like the following >> >> var res = map.getResolution(); >> >> if (res <= 305.7481130859375) { >> >> //use wms request on mapserver >> bovini = new OpenLayers.Layer.WMS( "Bovini", >> "http://brucellosi.izs.it/cgi-bin/mapserv?";, >> {map: >> '/usr/local/apache2/htdocs/mapfiles/brucellosi_alessio.map', >> transparent:'true', layers: 'a_bovini', 'format':'png'}, >> {'reproject': false, singleTile:true, isBaseLayer: >> false} ); >> bovini.setVisibility(false); >> map.addLayer(bovini); >> >> >> bovini_q = new OpenLayers.Layer.WMS( "Bovini_q", >> "http://brucellosi.izs.it/cgi-bin/mapserv?";, >> {map: >> '/usr/local/apache2/htdocs/mapfiles/brucellosi_alessio.map', >> transparent:'true', layers: 'a_bovini_q', >> 'format':'png'}, >> {'reproject': false, singleTile:true, isBaseLayer: >> false} ); >> bovini_q.setVisibility(false); >> map.addLayer(bovini_q); >> >> >> bovini_p = new OpenLayers.Layer.WMS( "Bovini_p", >> "http://brucellosi.izs.it/cgi-bin/mapserv?";, >> {map: >> '/usr/local/apache2/htdocs/mapfiles/brucellosi_alessio.map', >> transparent:'true', layers: 'a_bovini_p', >> 'format':'png'}, >> {'reproject': false, singleTile:true, isBaseLayer: >> false} ); >> bovini_p.setVisibility(false); >> map.addLayer(bovini_p); >> >> } else if (res > 305.7481130859375) { >> >> //ask for tilecache tiles on the disk >> bovini = new OpenLayers.Layer.WMS( "Bovini", tilecache,{layers: >> 'a_bovini'},{isBaseLayer: false} ); >> map.addLayer(bovini); >> >> bovini_q = new OpenLayers.Layer.WMS( "Bovini_q", tilecache,{layers: >> 'a_bovini_q'},{isBaseLayer: false} ); >> map.addLayer(bovini_q); >> >> bovini_p = new OpenLayers.Layer.WMS( "Bovini_p", tilecache, {layers: >> 'a_bovini_p'}, {isBaseLayer: false} ); >> map.addLayer(bovini_p); >> >> } >> >> >> The problem is that this solution works only in selecting the "starting >> source"... >> In this case, at the beginning, tilecache is correctly selected as layer >> source, but if I zoomIn (and my resolution becames > 305.748...) the >> layer >> is not >> requested to mapserver wms but still to tilecache... >> -- >> View this message in context: >> http://n2.nabble.com/asking-the-same-layer-to-mapserver-and-tilecache-depending-on-resolution-tp2321107p2321107.html >> Sent from the OpenLayers Users mailing list archive at Nabble.com. >> >> _______________________________________________ >> Users mailing list >> [email protected] >> http://openlayers.org/mailman/listinfo/users >> > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > > -- View this message in context: http://n2.nabble.com/asking-the-same-layer-to-mapserver-and-tilecache-depending-on-resolution-tp2321107p2333647.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
