On Wednesday, June 3, 2009, Tom B <[email protected]> wrote: > > Hi all, > > I've read about a couple of methods (clustering strategy, choosing WFS or > WMS based on zoom level) for working around the issue of WFS layers being > unusable for performance reasons when large numbers of complex features are > involved. Neither of these are terribly good solutions for our map, though, > and I wanted to see if anyone had any other ideas of good approaches. > > Our map has multiple layers with features that span many scales, and some > layers have large numbers of complex polygons (e.g. counties of China). > We'd ideally like to be able to highlight features/labels when the mouse > hovers over them, and click on a feature to get its info instead of making a > request to the map server that finds features based on the pixel location.
We often use a mechanism where a request is sent to the server when the mouse pauses. The server returns the feature, which we highlight using a vector layer. The > > I'm guessing that this isn't doable, given how these interface options rely > on vector layers, and using vectors for such complex data isn't realistic > performance-wise. Using the method of switching between WFS and WMS based > on zoom level wouldn't really work for us because of the wide variety of > scales of our features. > > Are there any other approaches to this? It seems like a performance issue > that just can't be avoided, but maybe there are some creative solutions that > I'm missing? > > Thanks, > Tom > -- > View this message in context: > http://n2.nabble.com/Vector-like-feature-interaction-with-large%2C-complex-layers-tp3019789p3019789.html > Sent from the OpenLayers Users mailing list archive at Nabble.com. > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > -- 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://openlayers.org/mailman/listinfo/users
