Latest Contributions by tonylife

If you know all the layers you need to select, you may try assign a queryTask for each layer , and after you get the polygon to select features, try" var queryTask1 = new QueryTask(serviceurl1); var queryTask2 = new QueryTask(serviceurl2); var queryTask3 = new QueryTask(serviceurl3); ... queryTaskList = [queryTask1, queryTask2,queryTask3...]; var query = new Query(); query.spatialRelationship = Query.SPATIAL_REL_CONTAINS; query.geometry = area.geometry; var queryTaskToDoList = dojo.map(queryTaskList, function(item, index){     return item.execute(query)     }): var listOfSelectedFeatures = []; all(queryTaskToDoList).then(function(featureSetList) { //this function returns a list of feature sets from all queryTask executions.     dojo.forEach(featureSetList, function(featureSet) {         listOfSelectedFeatures.push(featureSet);     }); }); Thanks for your solution. Your solution is doing query against service directly which would introduce client server communication. What I am trying to do is querying feature layer using existed client side data. I will try your solution when there comes a need. Thanks again. Tony ... View more

Try: var query = new esri.tasks.Query(); query.geometry = area.geometry; var listOfSelectedFeatures = []; for (var j = 0; j < map.graphicsLayerIds.length; j++) { var currentLayer = map.getLayer(map.graphicsLayerIds );            if (currentLayer.declaredClass === "esri.layers.FeatureLayer") {          currentLayer.selectFeatures(query, currentLayer.SELECTION_NEW, function (featureSet) {    listOfSelectedFeatures.concat(featureSet.features);         });         } } Please be noted that 1. The above code only deals with feature layers. Pure graphics layers should be filtered out since graphics layer has no selectFeatures method. 2. listOfSelectedFeatures may contain features in mixed spatial types. Thanks for your reminder. The two points you mentioned does make sense to me. The key to fix my problem is, the returned parameter "featureSet" for callback function of selectFeatures method. Things got much easier after knowing there is a featureSet returned by selectFeatures. Here is the updated code, which is working.             var listOfSelectedFeatures = [];             $.each(areas, function (ind, area) {                 var query = new esri.tasks.Query();                 query.geometry = area.geometry;                 for (var j = 0; j < GISViewer.map.graphicsLayerIds.length; j++) {                     var currentLayer = GISViewer.map.getLayer(GISViewer.map.graphicsLayerIds );                     if (currentLayer.visible) {                         if (currentLayer.declaredClass === "esri.layers.FeatureLayer") {                             currentLayer.selectFeatures(query, currentLayer.SELECTION_NEW, function (featureSet) {                                 listOfSelectedFeatures.push.apply(listOfSelectedFeatures, featureSet);                             });                         }                     }                 }             }); ... View more

I have nailed down the issue. It is related to Legend widget. For some reason, if I have some feature layers included, the code of legend widget throw exception when zoom in/out, which causes map broken. After debug it through I got the following details of stacktrace. When click zoom button, it runs "onZoomEnd" eventhandler inside of esri API. Then it jumps between var _5d7 = _5d6.advice.apply(this, args); and return _43e[_43f].apply(_43e, arguments || []); a couple of times. After that, if feature layer A is included, it then runs "_refreshLayers" which will eventually hit the null reference exception as shown in above post; if feature layer A is NOT included, it bypass "_refreshLayers", and everything works fine. "_refreshLayers" function is inside of esri's widgets.js, as follows: "esri/dijit/Legend": function() {   _refreshLayers: function() {                         this.refresh();                 } } My question is, what is the condition "_refreshLayers" function in Legend widget get hit when clicking zoom button? From my side, Feature Layer A is just a regular layer, nothing odd. It is loaded correctly in legend when legend widget gets initialized. Thanks, Tony ... View more

Here is compressed ESRI code. The code in red is where throw exception. Please give me some idea of it. Thanks, Tony                _3ce.place = function place(node, _3dc, _3dd) {                     _3dc = dom.byId(_3dc);                     if (typeof node == "string") {                         node = /^\s*</.test(node) ? _3ce.toDom(node, _3dc.ownerDocument) : dom.byId(node);                     }                     if (typeof _3dd == "number") {                         var cn = _3dc.childNodes;                         if (!cn.length || cn.length <= _3dd) {                             _3dc.appendChild(node);                         } else {                             _3d5(node, cn[_3dd < 0 ? 0 : _3dd]);                         }                     } else {                         switch (_3dd) {                             case "before":                                 _3d5(node, _3dc);                                 break;                             case "after":                                 _3d7(node, _3dc);                                 break;                             case "replace":                                 _3dc.parentNode.replaceChild(node, _3dc);                                 break;                             case "only":                                 _3ce.empty(_3dc);                                 _3dc.appendChild(node);                                 break;                             case "first":                                 if (_3dc.firstChild) {                                     _3d5(node, _3dc.firstChild);                                     break;                                 }                             default:                                 _3dc.appendChild(node);                         }                     }                     return node;                 }; ... View more

esri/geometry/Extent::contains take a point or extent. Per the docs: https://developers.arcgis.com/en/javascript/jsapi/extent.html#contains You could use the extent of your line but not the line itself. Thanks for your information. I do try the following area._extent.contains(graphic.geometry._extent). The area's extent is xmin: -9788742, ymin: 5311210, xmax: -9788670, ymax: 5311361 The graphic is a polyline, it's extent is  xmin: -9788713, ymin: 5311291, xmax: -9788712, ymax: 5311317 The result is still FALSE. not sure why Thanks, Tony ... View more

The IDs 102100 and 3857 both represent the same spatial reference: WGS84 Web Mercator (Auxiliary Sphere), so it would seem unlikely that the cause of the issue is due to a spatial reference system mismatch. The polygon geometry (xmin -9789042, xmax -9788311, ymin 5311122, ymax 5311413) The polyline geometry (xmin -9788713, xmax -9788712, ymin 5311291, ymax 5311317) It seems to me polyline is inside of polygon, am I missing somthing? Thanks, Tony ... View more

One option is to define a function that will generate your popup content using setContent. Then you can use the graphic.getLayer method to retrieve the graphics layer name. Here's an example that shows how this works: http://jsfiddle.net/AddHT/ Thank you! This is the solution I am using. I do use a customized function with graphic parameter in setContent. Actually what I need is graphic.getLayer().name. ... View more

I did integrate identity manager in our app. Without using https in our app, I have no problem to GET https for the ArcGIS online authentication token in both IE10 and Chrome. I do have problem in IE 9-. It seems that I have to setup proxy page to do so in IE9-. I guess the reason proxy page is not needed in IE10 and latest Chrome, is because they support CROS. But I have no idea why the demo requires to access itself through https even use IE 10 though. It may be related to app server setting. Thanks, Tony ... View more