I think it's possible that too much records make things fail. I strongly suggest you to use a WMS layer when zoomed-out and replace it by the WFS when zoomed-in. The other option would be to pre-cluster your data on the server side before sending the BIG WFS XML to the client.
Just out of curiosity, how big (???Mo) is your 8745 records XML? Julien [email protected] wrote: > > There are 8745 records in the database. That is why I tried to use the > cluster strategy in the first place without success because of the error > pointed out by Maxime. > > So I tried with a smaller dataset and the wfs layer and the cluster > strategy works perfectly. > It's still doesn't work for the "big" dataset. So I guess there a too > many records. Even with the cluster strategy it doesn't load. > > 1- Does the cluster strategy should work for 8745 records requested from > a shapefile or postgis? > 2- I cannot set the visibility of this vector layer to false. The > request is sent when the page load. > > Here is the definition of my Vector layer: > var WFSstyle = new OpenLayers.Style({ > pointRadius: "${radius}", > fillColor: "#71FF00", > fillOpacity: 0.5, > strokeColor: "#000", > strokeWidth: 2, > strokeOpacity: 0.3 > }, { > context: { > radius: function(feature) { > return Math.min(feature.attributes.count,7) + 4; > } > } > }); > > wfsStrategy = new OpenLayers.Layer.Vector("HLM WFS Strategy", > { > strategies: [ > new OpenLayers.Strategy.Fixed(), > new OpenLayers.Strategy.Cluster() > ], > protocol: new OpenLayers.Protocol.HTTP({ > url: > "http://geo.inspq.rtss.qc.ca/cgi-bin/mapserv.exe?map=/ms4w/paccSante/map/paccsante2.map";, > > > params: { > format: "WFS", > service: "WFS", > request: "GetFeature", > srs: "EPSG:900913", > VERSION : "1.0.0", > typename : 'HLM_shp_wfs2' > }, > format: new OpenLayers.Format.GML() > }), > styleMap:new OpenLayers.StyleMap({ > "default": WFSstyle, > "select": { > fillColor: "#8aeeef", > strokeColor: "#32a8a9" > } > }) > }, > { > extractAttributes:true, > visibility: false, > displayInLayerSwitcher: true > }); > > /Steve Toutant, M. Sc./ > Analyste en géomatique > Secteur environnement > Direction des risques biologiques, environnementaux et occupationnels > Institut national de santé publique du Québec > 945, avenue Wolfe > Québec, Qc G1V 5B3 > > Tél.: (418) 650-5115 #5281 > Fax.: (418) 654-3144_ > [email protected]_ <mailto:[email protected]>_ > __http://www.inspq.qc.ca_ <http://www.inspq.qc.ca/> > > > > > > > *"Heidt, Christopher M." <[email protected]>* > > 08/06/2009 11:02 AM > > > A > <[email protected]>, "Julien-Samuel Lacroix" > <[email protected]>, <[email protected]> > cc > > Objet > RE: [OpenLayers-Users] Problem to load a WFS > > > > > > > > > > > How many features are you getting? > > > ------------------------------------------------------------------------ > *From:* [email protected] > [mailto:[email protected]] *On Behalf Of > *[email protected]* > Sent:* Monday, June 08, 2009 10:59 AM* > To:* Julien-Samuel Lacroix; [email protected]* > Subject:* Re: [OpenLayers-Users] Problem to load a WFS > > > In the console TAB there is a GET call to my WFS, > http://geo.inspq.rtss.qc.ca/cgi-bin/mapserv.exe?map=/ms4w/paccSante/map/paccsante2.map&typename=HLM_shp_wfs2&srsName=EPSG%3A900913&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&SRS=EPSG%3A900913&BBOX=-13586195.339050002,2515633.1906250007,-1219295.6609499985,12299572.809375 > > > > I can see the Params and the Header but the Reponse tab is empty. After > several minutes I got this message > > > > > Here is line #1481 > return envelope;}},parseAttributes:function(node){var attributes={};var > childNode=node.firstChild;var > children,i,child,grandchildren,grandchild,name,value;while(childNode){if(childNode.nodeType==1){children=childNode.childNodes;for(i=0;i<children.length;++i){child=children[i];if(child.nodeType==1){grandchildren=child.childNodes;if(grandchildren.length==1){grandchild=grandchildren[0];if(grandchild.nodeType==3||grandchild.nodeType==4){name=(child.prefix)?child.nodeName.split(":")[1]:child.nodeName;value=grandchild.nodeValue.replace(this.regExes.trimSpace,"");attributes[name]=value;}}}} > > > > If I call the link above directly int IE or Firefox I get the XML file. > Also the memory of computer jump to 3gig and I got to kill firefox (I'm > on windows) > > thanks for your help, > Steve > > -- Julien-Samuel Lacroix Mapgears http://www.mapgears.com/ _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
