Hi,
How to return a set of unique values (of a certain attribute/ column) upon identified results?
Below is my code in the mapClick event
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var identifyTask = new esri.tasks.IdentifyTask(this.querylayer.map.url);
var identifyParams = new esri.tasks.IdentifyParameters();
identifyParams.tolerance = 3;
identifyParams.returnGeometry = true;
identifyParams.layerIds = [2];
identifyParams.layerOption = esri.tasks.IdentifyParameters.LAYER_OPTION_ALL;
identifyParams.width = this.map.width;
identifyParams.height = this.map.height;
identifyParams.mapExtent = this.map.extent;
identifyParams.layerDefinitions = [];
identifyParams.layerDefinitions[2]=this.mapAwardsLayer.layerDefinitions[2];
identifyParams.geometry = evt.mapPoint;
var deferred = identifyTask.execute(identifyParams);
deferred.addCallback(function(response) {
// response is an array of identify result objects
// Let's return an array of features.
return dojo.map(response, function(result) {
var feature = result.feature;
var template = new esri.InfoTemplate();
feature.setInfoTemplate(template);
var record = feature.attributes;
var popKey = record.PleaceOfPerformanceKey;
var name = record.NAME;
template.setContent("<b>"+name + "</b><br />" );
return feature;
});
});
this.map.infoWindow.setFeatures([ deferred ]);
this.map.infoWindow.resize(220,100);
this.map.infoWindow.show(this.map.toScreen(evt.mapPoint));
