topic Re: MapOverview widget problem - javascript api 3.2 in ArcGIS JavaScript Maps SDK Questions

MapOverview widget problem - javascript api 3.2

MilanaNinkovic — Wed, 31 Oct 2012 11:44:50 GMT

Hello,

I have problem with mapOverview widget in javascript api 3.2. I have 2 map services in application (arcgis online and one local service - wkid 102100). After adding default mapOverview widget to application it sometimes works, sometimes don't causing the error TypeError: _9 is null in OverviewMap.js .
Changing baseLayer property of mapOverview widget to the local map service (it has to be local) causes mapOverview widget never works, reporting the same error.

My code looks like follows:


var onlnService = new esri.layers.ArcGISTiledMapServiceLayer("http://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer",
        {
     opacity: 1
 });

var local = new esri.layers.ArcGISDynamicMapServiceLayer("http://localhost:6080/arcgis/rest/services/lovistaWGS/MapServer",
     {
      opacity: 0.6
     });
var overviewLayer= new esri.layers.ArcGISDynamicMapServiceLayer("http://localhost:6080/arcgis/rest/services/lovistaWGS/MapServer";

map.addLayers([arcgisonline, local]);

var overviewMapDijit = new esri.dijit.OverviewMap({
        map: map,
        visible: true,
        attachTo: "bottom-left",
        opacity: 0.5,
        color: "#000000",
        expandfactor: 4,
        maximizeButton: false,
        baseLayer: overviewLayer,
        visible: true
        });
    //}, dojo.byId("overviewDiv"));
    overviewMapDijit.startup();

What am I doing wrong?

Re: MapOverview widget problem - javascript api 3.2

__Rich_ — Wed, 31 Oct 2012 12:46:58 GMT

Maybe sometimes your chosen baseLayer hasn't loaded when you instantiate the OverviewMap, from the documentation:

baseLayer : Specify the base layer for the overview map. Note that the specified layer must be loaded, verify this using the layer's loaded property. If a base layer is not specified the dijit will use a copy of the main map's base layer....

Re: MapOverview widget problem - javascript api 3.2

JeffJacobson — Wed, 31 Oct 2012 14:49:52 GMT

Have you tried creating the MapOverview widget in the map's OnLoad event?

Re: MapOverview widget problem - javascript api 3.2

MilanaNinkovic — Fri, 02 Nov 2012 11:11:29 GMT

Have you tried creating the MapOverview widget in the map's OnLoad event?

I'm creating it on map's onLoad event. And can't figure out what the problem is.

Re: MapOverview widget problem - javascript api 3.2

MilanaNinkovic — Fri, 02 Nov 2012 11:22:57 GMT

Maybe sometimes your chosen baseLayer hasn't loaded when you instantiate the OverviewMap, from the documentation:

geos_rfleet I think the loading is not a problem. I tried also with:
if (overviewLayer.loaded){
}
In this case layer is loaded but mapOverview still doesn't work.

Even if it is shown regularly first time, if I refresh the page it disappears.