On Tue, Jun 09, 2009 at 04:29:21PM +0200, Ringdahl Niklas wrote: > Hello list. > > I have two different raster layers with different coordinate systems; > one is a Google Satellite layer and the other is a tiled layer in > epsg:2400. Depending on scale, I would like to select either as the base > layer and keep the WMS and WFS overlays independent of which base layer > is used.
This is not particularly easy with the current version of OpeNLayers. #1249 is tracking possible additions which would make this easier, but is not planned for any particular release. In particular, the overlays -- particularly vector overlays -- would likely need to be refreshed, which might not happen. If all of your data is based on BBOX-style requests -- that is, the data changes when the extents change -- this might 'just work', though when you change layers, i expect that the center will likely go to the wrong place, so you'll need to do some work to set/restore that. -- Chris > The way I envision this is to add them both to the map and use the > map.setBaseLayer method to alternate. Is this approach complete, or are > there other considerations to make, keeping the different reference > systems in mind? What kind of trouble will I get myself into with this? > > I would be happy for any pointer in the right direction on this. Thanks! > > - Niklas Ringdahl > > > _______________________________________________ > Dev mailing list > Dev@openlayers.org > http://openlayers.org/mailman/listinfo/dev -- Christopher Schmidt MetaCarta _______________________________________________ Dev mailing list Dev@openlayers.org http://openlayers.org/mailman/listinfo/dev
