On Sat, Dec 11, 2010 at 8:59 AM, Eric Lemoine <[email protected]> wrote: > On Friday, December 10, 2010, Alexandre Dube <[email protected]> wrote: >> >> >> >> >> >> >> Hi Cédric, >> >> I had to do that once. Here's what I did : >> >> * set both original layers their according minScale and maxScale >> properties >> * set both layers displayInLayerSwitcher: false and make sure they >> are not added to your layer tree >> * create a dummy layer with the name of your dataset, put it in >> your layertree >> * register events (both layers visibility should follow this one, >> on map "zoomend", check if you need to toggle the 2 layers, etc.) >> >> That way, you have your unchanging layer in your tree and the >> changes are transparent. Could that be okay with you ? > > I was going to suggest something along these lines. You can also look > at IGN's GeoPortal API, they have a "Group" (or "Aggregate", or ..., I > can't remember) layer type that you may want to take a look at.
See <http://api.ign.fr/geoportail/api/doc/1.1/jsdoc/files/Geoportal/Layer/Aggregate-js.html>. But one would need to look at the code to understand what this Aggregate layer type provides exactly. -- Eric Lemoine Camptocamp France SAS Savoie Technolac, BP 352 73377 Le Bourget du Lac, Cedex Tel : 00 33 4 79 44 44 96 Mail : [email protected] http://www.camptocamp.com _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
