[OpenLayers-Dev] Features not visible

[francescoboccacci at libero.it]

Hi all,  

I wrote this code to get data from a Geojson :

 var saveStrategy = new OpenLayers.Strategy.Save();
                saveStrategy.events.register('success', null, saveSuccess);
                saveStrategy.events.register('fail', null, saveFail);

var style_line =  new OpenLayers.StyleMap({
                        "default": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
                        
                        strokeWidth: 3,
                        strokeColor: "green",
                        pointRadius: 3
                        }, OpenLayers.Feature.Vector.style["default"])),
                        "select": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
                        
                        strokeWidth: 3,
                        strokeColor: "red",
                        pointRadius: 2
                        }, OpenLayers.Feature.Vector.style["select"]))
                        });

var myprotocol = new OpenLayers.Protocol.HTTP({
                    format: new OpenLayers.Format.GeoJSON(),
                    url: "/edit/data/Line",
                    params: {bbox: bb[0]+","+ bb[1]+"," + bb[2]+","+bb[3]}
                    
                });
                
               

                layer_line = new OpenLayers.Layer.Vector("Line", {
                projection: "EPSG:4326",
                strategies: [saveStrategy],
                protocol:myprotocol,
                styleMap: style_line

             
                });


                layer_line.protocol.read({
                                
                                    callback: function(resp) {
                                
                                
                                layer_line.addFeatures(resp.features);

                                }
                            });

                map.addLayer(layer_line);
In firebug i write command : layer_line.features.length and it show me a number. I think that it means that layer has feature but on map i can see the features. Where am i wrong?


Thanks
Francesco
 
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