Raster Identify Flex Viewer

premsweb

Just what the title says, whats the easiest way to identify a pixel value for a Raster layer in the Flex Viewer. I looked through the REST API and couldnt find anything ....

Cheers

haThach

If anyone cares and for sake of posterity, I have this working on a rudimentary level. I still need to format the output, but I am getting pixels values. What I had to do is set up a Mosaic Dataset in a geodatabase. In my case I added two rasters that overlay each other. I then set up a Image Service in ArcGIS Server 10 that published the Mosaic Dataset. I used all the defaults, except the option of "Allowed compression methods", I unchecked JPEG. And used the code below.

DISCLAIMER: Don't use this for displaying overlaying rasters. I would stick with publishing individual Raster Datasets.

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
      xmlns:s="library://ns.adobe.com/flex/spark"
      xmlns:esri="http://www.esri.com/2008/ags" 
      xmlns:mx="library://ns.adobe.com/flex/mx">
 
 <fx:Script>
  <![CDATA[
   
   import com.esri.ags.events.ImageServiceIdentifyEvent;
   import com.esri.ags.events.MapMouseEvent;
   import com.esri.ags.geometry.Geometry;
   import com.esri.ags.tasks.supportClasses.ImageServiceIdentifyParameters;
   import com.esri.ags.tasks.supportClasses.ImageServiceIdentifyResult;
   
   import mx.controls.Label;
   import mx.controls.Text;
   import mx.core.IUIComponent;
   import mx.rpc.AsyncResponder;
      
   private function onMapClick(event:MapMouseEvent):void
   {
    imgIdentifyTask.url = "http://yourservername/ArcGIS/rest/services/FlexDev/lf_mosaic/ImageServer";
       
    var IDParams:ImageServiceIdentifyParameters = new ImageServiceIdentifyParameters();
    IDParams.geometry = event.mapPoint;
    imgIdentifyTask.execute(IDParams);
   
   }
   
   private function imgExecuteComplete(event:ImageServiceIdentifyEvent):void
   {
    var pixelValue:Array = event.identifyResult.properties.Values as Array;
    idImageLabel.text = pixelValue.toString();
   }
  ]]>
 </fx:Script>
 
 <fx:Declarations>
    
  <esri:ImageServiceIdentifyTask id="imgIdentifyTask" executeComplete="imgExecuteComplete(event)"/>
  
 </fx:Declarations>
 
 <esri:Map id="myMap" extent="{new Extent(-10955781, 4374995, -8825382, 5549067)}"
     openHandCursorVisible="false" mapClick="onMapClick(event)"> 
  
  <esri:ArcGISTiledMapServiceLayer url="http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/>
  
  <esri:ArcGISImageServiceLayer url="http://yourservername/ArcGIS/rest/services/FlexDev/lf_mosaic/ImageServer"/>
  
 </esri:Map>
 
 <s:HGroup  x="80" y="50" width="150" color="#245EEE">
 <s:Label id="idImageLabel" text="PIXEL VALUES FROM CLICK" fontWeight="bold" fontSize="24" color="#000000"/>
 </s:HGroup>
</s:Application>

Hi all,
Can somebody point me to the right direction of how to use the above code in Flexviewer 2.2.
Thanks.