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Problems creating a feature layer from a feature collection

StephenLead

Is anyone able to explain why the attached code isn't working? Also available live here.

I'm trying to create a featureLayer from a featureCollection based on the results of a query.

I'm finding that the featureLayer is apparently created, and I can see that it contains graphics (map.getLayer("query layer").graphics.length shows there are 167 features in the new layer), but they are not visible on the map. There should be a polygon shown in the centre of the map.

The relevant code is:

queryTask.execute(query, selectShowResults, SQLerror);  function selectShowResults(results) {     //Create a feature layer from the results     var featureSet = new esri.tasks.FeatureSet({         features: results.features     });          var fields = [         {             "name": "NAME",             "type": "esriFieldTypeString",             "alias": "Name"         },         {             "name": "OBJECTID",             "type": "esriFieldTypeOID",             "alias": "OBJECTID"         }     ]          var layerDefinition = {       "geometryType": "esriGeometryPolygon",       "fields": fields,       "objectIdField": "OBJECTID",     }       var featureCollection = {       layerDefinition: layerDefinition,       featureSet: featureSet     };          var layer = new esri.layers.FeatureLayer(featureCollection, {         id: "query layer",         mode: esri.layers.FeatureLayer.MODE_SNAPSHOT     })          var renderer = new esri.renderer.SimpleRenderer(         new esri.symbol.SimpleFillSymbol("solid", null, new dojo.Color([255, 0, 255, 0.75])     ));          layer.setRenderer(renderer);     map.addLayer(layer);                 }

Thanks,
Steve

simpleQuery.html.zip

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Accepted answers

StephenLead

The query that I was using wasn't returning a feature within the map extent, so it was never going to work. I've updated the sample with a new extent and slightly different query, and it's working OK now.

All comments

LefterisKoumis

Hello. The link you provided in your last post is not working. Can you post your solution? Thanks.

StephenLead

Stepping through it, I can see that this line:

var featureSet = new esri.tasks.FeatureSet({
  features: results.features
});

is stripping the geometry from the results, meaning that the feature layer has no geometry.

function selectShowResults(results) {
 //Create a feature layer from the results
 
 var graphics = [];
 var sfs = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID,
  new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASHDOT,
  new dojo.Color([255,0,0]), 2),new dojo.Color([255,255,0,0.25]));
  
 var infoTemplate = new esri.InfoTemplate();
 for (var i = 0; i < results.features.length; i++) {
  var feature = results.features;
  var graphic = new esri.Graphic(feature.geometry,sfs,feature.attributes,infoTemplate);
  graphics.push(graphic);
 }
 
 var sr = new esri.SpatialReference(102100);
 var featureSet = new esri.tasks.FeatureSet({
  geometryType: "esriGeometryPolygon",
  features: graphics,
  spatialReference: sr
 });

Still no luck, though.... Thanks for any advice.

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