Setting map extent to extent of a ArcGISDynamicMapServiceLayer

Question

I am having difficulty figuring out how to set the map extent to that of a dynamic layer. Can anyone point me in the right direction?

baileyhanson · Answer

Thanks for the help. I ended up just using this

var map = new esri.Map("mapDiv", {
        extent: new esri.geometry.Extent({
            xmin: -11068326.4061,
            ymin: 4920683.9772,
            xmax: -10034349.7679,
            ymax: 5501319.0439,
         spatialReference: {
              wkid: 102100
            }
          })
        });

kenbuja · Answer

It looks like it has difficult with spatial references other than 102100 and 4326. TUsing a map service with another one gives the following message in the console:

Map: Geometry (wkid: 4269) cannot be converted to spatial reference of the map (wkid: 102100)

What you'll have to do is get the extent of the extent of your dynamic layer and project it into 102100 or 4326 using a geometry service. You can then use the projected geometry to set the map's extent.

baileyhanson · Answer

Ken, shouldn't I be able to use this code and replace the ArcGISDynamicMapServiceLayer URL with my URL? It still won't zoom to the layer.