Latest Contributions by DougCollins

I am using the JS 4.0 API and am trying to get the return result from an asynchronous service, but I keep getting the error: TypeError: d.spatialReference is undefined on the result. When I created the GP task I set the output spatial reference to that of the base map ... gp = new Geoprocessor(testURL);   gp.outSpatialReference = {   wkid: 102100   }; However, when I try to get the result image, I get the error stating that spatialReference is undefined.  I am getting the result as follows: var resultImage = gp.getResultImageLayer(result.jobId, "myImage", imageParams); Is there any way to force or set the spatialReference on the return result image?  Maybe in the "imageParams"?  But the docs on imageParameters don't really seem to say that I can set the spatialReference.  Is it possible? Thanks, Charlie ... View more

I have been working with the latest Javascript API 4.0, and have noticed that when you launch the web page and click to get a z value, it is incorrect depending on your initial zoom level.   If you set the zoom level at 7 or less (or about 1:4,000,000), the z value of a point is incorrect, but if the zoom level is at 8 or higher, then it is correct.  Also, if you launch the web page with a zoom level of 7 or less, and zoom in by one level (ie. to 8), then back out to 7, it reports the correct z value.  It seems that it depends on the initial zoom level when starting the application.  Is this a bug? Sample code is attached. Thanks, Charlie ... View more

I have an application where I need to switch out layers when a user makes a selection from a dropdownlist.  I have the switching of the layers working fine, but I cannot get the LayerList to refresh with the newly selected layer.  The LayerList works fine when the application loads, but when a layer is switched it does not work.  I have tried to use the refresh method but that does not seem to work.  Perhaps I am doing something wrong.  I have a simplified version of what I am trying to do in the Javascript code below.   I am using JS API version 3.16. Thanks, Charlie require([   "dojo/dom", "dojo/parser", "dojo/on", "dojo/query", "dojo/dom-class",   "dojo/dom-style", "dojo/dom-construct",    "esri/map",    "esri/layers/ArcGISDynamicMapServiceLayer",   "dijit/registry",   "esri/dijit/LayerList",   "dijit/form/Button",   "dijit/layout/BorderContainer",   "dijit/layout/TabContainer",   "dijit/layout/ContentPane",   "dijit/TitlePane",   "dijit/Dialog",   "dijit/form/TextBox",   "dijit/form/ComboBox",   "dojo/domReady!" ], function(   dom, parser, on, query, domClass,   domStyle, domConstruct,    Map, ArcGISDynamicMapServiceLayer,    registry, LayerList )   {   parser.parse();   // Define layers and URL variables   var dynamicLayer;   var staticLayer;   var dynLayerURL;   var staticURL = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/NapervilleShelters/MapServer";   var layer1URL = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/DamageAssessment/MapServer";   var layer2URL = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/CommercialDamageAssessment/MapServer";   // Get the layer drop down list   var selectedLayer = registry.byId('layerDropDown');   selectedLayer.on('change', setLayer);   // Start out with layer selected in dropdownList   var layerValue = selectedLayer.get('value');   if (layerValue == '1') {   dynLayerURL = layer1URL;   }   else if (layerValue == '2') {   dynLayerURL = layer2URL;   }   map = new Map("mapPanel", {         center: [-98.2, 40.05],         zoom: 5,         basemap: "national-geographic"   });   // Define layers as ArcGISDynamicMapServiceLayers   dynamicLayer = new ArcGISDynamicMapServiceLayer(dynLayerURL, { visible: true });   staticLayer = new ArcGISDynamicMapServiceLayer(staticURL, { visible: true });   // Add the LayerList   var layerList = new LayerList({        map: map,        showLegend: true,        layers: [ {layer: staticLayer, id: "Shelters", sublayers: true}, {layer: dynamicLayer, id: "Assessment", sublayers: true}]   }, "legendDiv");   layerList.startup();   layerList.on('load', function(){   expandLayerList();   });   // ADD the LAYERS   map.addLayers([staticLayer, dynamicLayer]);   function loadDynamicLayer() {   // Remove the current dyamicLayer   map.removeLayer(dynamicLayer);   // Point the new Dynamic Layer URL to the dynamicLayer   dynamicLayer = new ArcGISDynamicMapServiceLayer(dynLayerURL, { visible: true });   map.addLayer(dynamicLayer); // REFRESH the layerList  (DOES NOT WORK)   //  If I click on the layerList checkboxs, it gives me the error:   //   TypeError: t.byId(...) is null    ???   layerList.refresh();   }   function setLayer() {   var lyrValue = selectedLayer.get('value');   if (lyrValue == '1') {   dynLayerURL = layer1URL;   }   else if (lyrValue == '2') {   dynLayerURL = layer2URL;   }   // Load the newly selected dynamic layer   loadDynamicLayer();   }   function expandLayerList() {    query('.esriLayer').forEach(function(node){    domClass.add(node, "esriListExpand");    });    query('.esriToggleButton').forEach(function(node){    domClass.replace(node, "esri-icon-down", "esri-icon-right");    });    } }); ... View more