Latest Contributions by RyanKelso

Please enable the ability in ArcGIS Online to create labels for features in a dynamic stream service layer, just like you can with other feature layers. ... View more

I'm working on a very simple map just as a learning exercise.  I want it to select, highlight, and zoom to a defined parcel.  It works, except that some of the time I get this error:  "TypeError:  Cannot read property 'wkid' of null".  I get the error when the MapView.goTo() method tries to fire, but the graphics are visible on the map. I'm a beginner trying to learn, so consider that when checking out the code.  My parcel data is not public so I swapped it out for King County data below, but oddly I can't get the error to occur with this other data.  Any ideas about what's going on? require([       "esri/Map",       "esri/PopupTemplate",       "esri/views/MapView",       "esri/layers/MapImageLayer",       "esri/layers/GraphicsLayer",       "esri/symbols/SimpleFillSymbol",       "esri/tasks/QueryTask",       "esri/tasks/support/Query",       "dojo/_base/array",       "dojo/domReady!"     ], function(Map, PopupTemplate, MapView, MapImageLayer, GraphicsLayer, SimpleFillSymbol, QueryTask, Query, arrayUtils) {       var parcelsMapService = MapImageLayer({         url:  "http://gismaps.kingcounty.gov/arcgis/rest/services/Property/KingCo_PropertyInfo/MapServer",         sublayers: [           {             id: 2,             visible: true           }         ]       });       var resultsLayer = new GraphicsLayer();             var map = new Map({         basemap: "topo",         layers:  [parcelsMapService, resultsLayer]       });       var view = new MapView({         container: "viewDiv",         map: map,         zoom: 11,         center: [-122, 47.5]       });             var popupTemplate = PopupTemplate({         title: "Selected Parcel",         content: "{PIN}"       });             var queryTask = new QueryTask({         url: "http://gismaps.kingcounty.gov/arcgis/rest/services/Property/KingCo_PropertyInfo/MapServer/2"       });       var pinQuery = new Query({         returnGeometry: true,         outFields: ["*"],         outSpatialReference: {"wkid": 4326}       });             pinQuery.where = "PIN = '7666204876'";             queryTask.execute(pinQuery)         .then(getResults)         .then(addToLayer)         .then(goToLayer);               function getResults(response) {         var parcelResults = arrayUtils.map(response.features, function(feature) {           feature.symbol = new SimpleFillSymbol({             color: [255, 255, 0, 0.25],             style: "solid",             outline: {               color: [255, 255, 0],               width: 3             }           });           feature.popupTemplate = popupTemplate;           return feature;         });         return parcelResults;       }             function addToLayer(parcelResults) {         resultsLayer.addMany(parcelResults);       }       function goToLayer() {         view.goTo(resultsLayer.graphics);       }           }); ... View more