topic Re: Legend reply "No legend" urgent response needed in ArcGIS JavaScript Maps SDK Questions

Legend reply "No legend" urgent response needed

elizabethkalinaki — Mon, 05 Dec 2011 12:54:45 GMT

I added some layers to my web map, am calling it using the arcgis javascript api 2.5 but for the legend i get "No legend" where the legend should be, can someone help me, almost throwing in the towel!
I want to be able to call a layer by its id..something like.if one clicks on this symbol, show this layer
thank you

Re: Legend reply "No legend" urgent response needed

JeffPace — Mon, 05 Dec 2011 13:20:09 GMT

I added some layers to my web map, am calling it using the arcgis javascript api 2.5 but for the legend i get "No legend" where the legend should be, can someone help me, almost throwing in the towel!
I want to be able to call a layer by its id..something like.if one clicks on this symbol, show this layer
thank you

Please post your code, or a link to you public site. It is very difficult to understand what you are asking.

If you get "No Legend" that usually means the legend service for your layers is not accessible. What version of server are you running? if <10 it uses ESRI's legend service. If >10 then it will use your local services.

The legend is only that, there is no "on click" functionality to the symbols. It sounds like you are looking for a Table of Contents (TOC). The legend is not appropriate for that, as it is out of the box from ESRI.

Re: Legend reply "No legend" urgent response needed

elizabethkalinaki — Tue, 06 Dec 2011 10:05:36 GMT

thank you for the response, here is the code...

<script type="text/javascript">
      dojo.require("dijit.dijit");
      dojo.require("dijit.layout.BorderContainer");
      dojo.require("dijit.layout.ContentPane");
      dojo.require("esri.map");
      dojo.require("esri.arcgis.utils");
      dojo.require("esri.dijit.Legend");
      dojo.require("esri.dijit.Scalebar");




      var map;

      function init() {

     esri.config.defaults.io.proxyUrl = "/arcgisserver/apis/javascript/proxy/proxy.ashx";
        var mapDeferred = esri.arcgis.utils.createMap("e6cb82722b8d4a31a39c053e24ca8789", "map", {
          mapOptions: {
            slider: true,
            nav:false
          }
        });
        mapDeferred.addCallback(function(response) {

          map = response.map;

          //resize the map when the browser resizes
          dojo.connect(dijit.byId('map'), 'resize', map,map.resize);
          //add the legend
          var layers = response.itemInfo.itemData.operationalLayers;
          if(map.loaded){
            initMap(layers);
          }
          else{
          dojo.connect(map,"onLoad",function(){
            initMap(layers);
          });
        }
        });
        mapDeferred.addErrback(function(error) {
          console.log("Map creation failed: ", dojo.toJson(error));
        });

      }

      function initMap(layers){
       //add chrome theme for popup
        dojo.addClass(map.infoWindow.domNode, "chrome");

       //add a scalebar
        var scalebar = new esri.dijit.Scalebar({
          map:map,
          scalebarUnit: 'english'
        });
        //add a legend
        var layerInfo = dojo.map(layers, function(layer,index){
          return {layer:layer.layerObject,title:layer.title};
        });
        if(layerInfo.length > 0){
          var legendDijit = new esri.dijit.Legend({
            map:map,
            respectCurrentMapScale:true,
            layerInfos:layerInfo
          },"legend");

          legendDijit.startup();
        }
        else{
          dojo.byId('legend').innerHTML = 'No operational layers';
        }

      }

      //show map on load
      dojo.addOnLoad(init);

    </script>

i really need this, thank you