On Thursday, May 28, 2009, Matt Kenny <matthewke...@gmail.com> wrote: > Hello, > > I've got a quick question that I'm hoping someone knows the answer to. > > I've got a single vector layer containing both point and line features. > > All features have a 'TYPE' attribute. Points are either 'TYPE:COMPANY' or > 'TYPE:AIRPORT', and lines are always 'TYPE:ROUTE'. > > I'm wondering if it is possible to create a cluster strategy that only > clusters features in my vector layer that are of an attribute, 'TYPE:COMPANY'?
Registering a beforefeaturesadded listener and have this listener filter out features that aren't of type TYPE:COMPANY should work. The listener would look like: function filter(evt) { var features = []; for(var i=0, len=evt.features.length; i<len; i++) { if(evt.features[i].attributes.type == "TYPE:COMPANY") { features.push(evt.features[i]); } } evt.features = features; // with that the cluster strategy will see a different set of features } The thing is you need to register the listener *before* the cluster strategy is activated. For that either (a) set autoActivate to false in the strategy config, and activate the strategy yourself after the registration of your beforefeaturesadded listener, (b) deactivate the strategy, register your listener, and activate the strategy again. (a) is more elegant I think. Cheers, > > Thanks, > Matt > -- > m a t t h e w k e n n y > http://www.mkgeomatics.com > Sent from Tempe, AZ, United States > -- Eric Lemoine Camptocamp France SAS Savoie Technolac, BP 352 73377 Le Bourget du Lac, Cedex Tel : 00 33 4 79 44 44 96 Mail : eric.lemo...@camptocamp.com http://www.camptocamp.com _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users