Display Results for 2 Layers?

EmilyLaMunyon

Hi all,

I have a Javascript web map in which the user manually selects layers by dragging a box, using the Identify Task. I have it working where if features from one layer are selected, the results are displayed in a datagrid. The problem I am having is if two layers overlap and the user selects them both, I can't figure out how to display results for both. I have tried multiple things and am yet to come up with a solution. I am open to either having both datagrids displayed at the bottom, or giving the user a choice through a pop-up window of which grid results to show. The last chunk of the else/if statement where I try to put both the layers together does not seem to be working....any ideas????

Thanks so much!!!

 dojo.connect(map, 'onLoad', function(theMap) {
     
      navToolbar.deactivate();
           identifyTask = new esri.tasks.IdentifyTask("http://slcarcgisdev1/SLCOGIS/rest/services/public/Surveyor/MapServer");
           
           identifyParams = new esri.tasks.IdentifyParameters();
           identifyParams.tolerance = 3;
           identifyParams.returnGeometry = true;
           identifyParams.layerIds = [0,2];
           identifyParams.layerOption = esri.tasks.IdentifyParameters.LAYER_OPTION_ALL;
           identifyParams.width  = map.width;
           identifyParams.height = map.height;
       
       
          //initialize the toolbar
          toolBar = new esri.toolbars.Draw(map);
          dojo.connect(toolBar, "onDrawEnd",onDrawEnd);          
          navToolbar.deactivate();
          //resize the map when the browser resizes
          dojo.connect(dijit.byId('map'), 'resize', map,map.resize);
          
          
        });

         
         
       
      
      function onDrawEnd(extent){
          navToolbar.deactivate();
          executeIdentifyTask(extent);
      }
      
      
 function executeIdentifyTask(geom) {
        //clear the graphics layer 
           map.graphics.clear();
        var polygonSymbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DOT,    new   dojo.Color([151, 249,0,.80]), 3), new dojo.Color([151, 249, 0, 0.45]));
        var markerSymbol = new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_CIRCLE, 20, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([0, 0, 0]), 1), new dojo.Color([25,50,225,0.3]));
        
        identifyParams.geometry = geom;
        identifyParams.mapExtent = map.extent;
        identifyTask.execute(identifyParams,function(response){
            var controlItems = [];
            var surveyItems = [];
                   
           dojo.forEach(response,function(result){
               var feature = result.feature;
                //add selected feature to graphics layer
                feature.setSymbol(polygonSymbol);
                feature.setSymbol(markerSymbol);
                map.graphics.add(feature);
                
               if(result.layerName === 'Control Points'){
               showPointNameGrid();
               controlItems.push(feature.attributes);
               searchType = "selControl";
              var controlStore = new dojo.data.ItemFileReadStore({data:{identifier:'POINT_NAME',items:controlItems}});
              var grid = dijit.byId('grid4');
              grid.setStore(controlStore);
                 
               
         
         }else if(result.layerName === 'surveys'){
                 
           showSurveysNameGrid();
           surveyItems.push(feature.attributes);
           searchType="selSurveys";
           var surveysStore = new dojo.data.ItemFileReadStore({data:{identifier:'DOCUMENT_N',items:surveyItems}});
           var grid = dijit.byId('grid5');
           grid.setStore(surveysStore);
         
           
          }else if((result.layerName === 'surveys') && (result.layerName === 'Control Points')){
            showSurveysNameGrid()             
            surveyItems.push(feature.attributes);  
            showPointNameGrid();
            controlItems.push(feature.attributes);  
            
           
            
            
            var surveysStore = new dojo.data.ItemFileReadStore({data:{identifier:'DOCUMENT',items:surveyItems}});
            var grid = dijit.byId('grid5');
           grid.setStore(surveysStore);
          
            
            var controlStore = new dojo.data.ItemFileReadStore({data:{identifier:'POINT_NAME',items:controlItems}});
            var grid = dijit.byId('grid4');
           grid.setStore(controlStore);
          
         
           
           }
                
                
               
           });
           
           
         

  
           
          
        });


      }

EmilyLaMunyon

I thought this was working, and it almost is, when any one feature is selected by dragging a selection box, the results display fine. The problem arises when the selection box selects two overlapping features from different layers. I want results from all selected features to display in their respective data grids, or give the user an option to chose which data grid results to show. Currently, it seems that only the surveys results are displaying, even though the Control Points are being selected as well. Any advice on how to remedy this? Could it be because Control Points are a point layer and they do not have length?

Thanks for any help!

 dojo.connect(map, 'onLoad', function(theMap) {
     
      navToolbar.deactivate();
           identifyTask = new esri.tasks.IdentifyTask("http://slcarcgisdev1/SLCOGIS/rest/services/public/Surveyor/MapServer");
           
           identifyParams = new esri.tasks.IdentifyParameters();
           identifyParams.tolerance = 3;
           identifyParams.returnGeometry = true;
           identifyParams.layerIds = [0,1,2];
           identifyParams.layerOption = esri.tasks.IdentifyParameters.LAYER_OPTION_ALL;
           identifyParams.width  = map.width;
           identifyParams.height = map.height;
       
       
          //initialize the toolbar
          toolBar = new esri.toolbars.Draw(map);
          dojo.connect(toolBar, "onDrawEnd",onDrawEnd);          
          navToolbar.deactivate();
          //resize the map when the browser resizes
          dojo.connect(dijit.byId('map'), 'resize', map,map.resize);
          
          
        });

         
         
       
      
      function onDrawEnd(extent){
          navToolbar.deactivate();
          executeIdentifyTask(extent);
      }
      function executeIdentifyTask(geom) {
       navToolbar.deactivate();
        map.graphics.clear();
        var polygonSymbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DOT, new dojo.Color([151, 249,0,.80]), 3), new dojo.Color([151, 249, 0, 0.45]));
        var markerSymbol = new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_CIRCLE, 20, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([0, 0, 0]), 1), new dojo.Color([25,50,225,0.3]));
        
        identifyParams.geometry = geom;
        identifyParams.mapExtent = map.extent;
        identifyTask.execute(identifyParams,function(response){
            var controlItems = [];
            var surveyItems = [];
        
            dojo.forEach(response,function(result){

           var feature = result.feature;
                
           if (result.layerName =="surveys"){
        showSurveysNameGrid();
               feature.setSymbol(polygonSymbol);
        surveyItems.push(feature.attributes);
    }else if (result.layerName=="Control Points"){
       showPointNameGrid();
  feature.setSymbol(markerSymbol);
  controlItems.push(feature.attributes);  
    }
    //add selected feature to graphics layer       
           map.graphics.add(feature);
  });
          
         if(controlItems.length >0){
     var controlStore = new dojo.data.ItemFileReadStore({data:{identifier:'POINT_NAME',items:controlItems}});
     var grid = dijit.byId('grid4');
        grid.setStore(controlStore);
     showPointNameGrid();
  }            
      
         if(surveyItems.length >0){
   
            var surveysStore = new dojo.data.ItemFileReadStore({data:{identifier:'DOCUMENT_N',items:surveyItems}});
            var grid = dijit.byId('grid5');
            grid.setStore(surveysStore);
     showSurveysNameGrid();
  }
 
     });
}