topic Re: Not Able To Display Query Task Result on Graphic Layer in ArcGIS JavaScript Maps SDK Questions

Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Sat, 11 Dec 2021 14:01:26 GMT

Using ArcGIS API 3.21 and following code I am trying to populate the result of a Query Task on map by populating the result featureSet on GraphicLayer but I am not getting any thing in result. and No error on Console. Can you please let me know what I am doing wrong?

var map;
 require([
 "esri/map", 
 "esri/layers/FeatureLayer", 
 "esri/layers/GraphicsLayer",
 "esri/tasks/query",
 'esri/tasks/QueryTask',
 'dojo/_base/array',
 "esri/graphic", 
 "esri/symbols/SimpleMarkerSymbol",
 "esri/Color", 
 "dojo/dom", 
 "dojo/domReady!"
 ], function(
 Map, FeatureLayer, GraphicsLayer, Query, QueryTask, array, Graphic, SimpleMarkerSymbol, Color, dom
 ) {
map = new Map("mapDiv", { 
 basemap: "streets",
 center: [-88.155000, 41.784042],
 zoom: 14,
 slider: false
 });
 
 var graphicsLayer = new GraphicsLayer();
 
 var markerSymbol = new SimpleMarkerSymbol(
 SimpleMarkerSymbol.STYLE_SQUARE, 10, null, new Color([50,50,255])
 );
 
  var queryTask = new QueryTask("https://server.domain.com/arcgis/rest/services/ElectricData/FeatureServer/3");
   
  var query = new Query();
   query.where = "1=1";
   query.returnGeometry = true;
   query.outFields = [ "CreationUser"];
   queryTask.execute(query).then(onQuerySuccess, onError);

  function onQuerySuccess(featureSet) {
    array.forEach(featureSet.features, function(feature) {
    feature.setSymbol(markerSymbol);
    graphicsLayer.add(feature);
   });
   map.addLayer(graphicsLayer);
  }

  function onError(error) {
    console.error('An error ocurred in the query: ', error);
 }
 
 });‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Not Able To Display Query Task Result on Graphic Layer

RobertScheitlin__GISP — Wed, 27 Sep 2017 18:17:31 GMT

Bengi,

You need to set the queries outSpatialReference to the maps:

query.outSpatialReference = map.spatialReference;‍

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Sat, 11 Dec 2021 14:01:29 GMT

Thanks for comment Robert I updated the code as:

query.where = "1=1";
 query.returnGeometry = true;
 query.outSpatialReference = map.spatialReference;
 query.outFields = [
 "CreationUser"
 ];‍‍‍‍‍‍

but still noting on the map!

Re: Not Able To Display Query Task Result on Graphic Layer

RobertScheitlin__GISP — Wed, 27 Sep 2017 18:30:40 GMT

Bengi,

Are getting to the onQuerySuccess function? Can you add a console statement to that function to test?

The way I normally have my querytask execute is this:

queryTask.execute(query, onQuerySuccess, onError);

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Wed, 27 Sep 2017 18:31:33 GMT

I also tried to console.log() the results

 console.log(featureSet.features[i])‍‍

which I am getting this points

{type: "point", x: 1034892.977614373, y: 1871653.8816519529, spatialReference{wkid: 102671, latestWkid: 3435}}

Re: Not Able To Display Query Task Result on Graphic Layer

RobertScheitlin__GISP — Wed, 27 Sep 2017 18:36:44 GMT

Bengi,

What is returning from the query is still not the correct spatial reference then it is 102671 when it needs to be 102100. Can you show your latest updated code?

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Sat, 11 Dec 2021 14:01:31 GMT

Sure here you are

var map;
 require([
 "esri/map", 
 "esri/layers/FeatureLayer", 
 "esri/layers/GraphicsLayer",
 "esri/tasks/query",
 'esri/tasks/QueryTask',
 'dojo/_base/array',
 "esri/graphic", 
 "esri/symbols/SimpleMarkerSymbol",
 "esri/symbols/SimpleLineSymbol", 
 "esri/symbols/SimpleFillSymbol", 
 "esri/renderers/SimpleRenderer",
 "esri/Color", 
 "dojo/dom", 
 "dojo/domReady!"
 ], function(
 Map, FeatureLayer, GraphicsLayer, Query, QueryTask, array, Graphic, SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, SimpleRenderer, Color, dom
 ) {
map = new Map("mapDiv", { 
 basemap: "streets",
 center: [-88.155000, 41.784042],
 zoom: 14,
 slider: false
 });
 var graphicsLayer = new GraphicsLayer();
 var markerSymbol = new SimpleMarkerSymbol(
 SimpleMarkerSymbol.STYLE_SQUARE, 10, null, new Color([50,50,255])
 );
 
 
 var queryTask = new QueryTask("https://server.domain.com/arcgis/rest/services/ElectricData/FeatureServer/3");
var query = new Query();
 
 
 query.where = "1=1";
 query.returnGeometry = true;
 query.outSpatialReference = map.spatialReference;
 query.outFields = [
 "CreationUser"
 ];
 queryTask.execute(query).then(onQuerySuccess, onError);
function onQuerySuccess(featureSet) {
array.forEach(featureSet.features, function(feature) {
feature.setSymbol(markerSymbol);
 graphicsLayer.add(feature);
});
 console.log(featureSet.features)
 map.addLayer(graphicsLayer);
 
}
function onError(error) {
console.error('An error ocurred in the query: ', error);
}
 
 
 });‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Not Able To Display Query Task Result on Graphic Layer

RobertScheitlin__GISP — Wed, 27 Sep 2017 18:48:00 GMT

Bengi,

Try changing this line for testing:

query.outFields = ["*"];

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Wed, 27 Sep 2017 18:50:46 GMT

You are right it is actually adding the points to graphiclayer but somewhere in Africa!. Is there any way to update the spatialRefrence?

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Wed, 27 Sep 2017 18:57:13 GMT

and when I try to get map spatial Reference

console.log(map.spatialReference);‍

it outputs undefine

Re: Not Able To Display Query Task Result on Graphic Layer

RobertScheitlin__GISP — Wed, 27 Sep 2017 19:01:54 GMT

Interesting. So you need to manually define the query out spatial reference then

query.outSpatialReference = {wkid:102100};

Re: Not Able To Display Query Task Result on Graphic Layer

BehrouzHosseini — Wed, 27 Sep 2017 19:05:17 GMT

Thanks a lots, it is working now!

Re: Not Able To Display Query Task Result on Graphic Layer

KenBuja — Wed, 27 Sep 2017 19:15:25 GMT

If you want to use map.spatialReference, you'll have to wait until the map's spatial reference has been set in the load event (which fires when the first or base layer has been successfully added to the map)