Can I set individual scale levels for an ArcGISDynamicMapServiceLayer?

Question

I have a map service that contains 6 layers.

I turned one layer into a feature layer. I used this layer in a query and show the result.

I then would like to just show the other 5 layers as a ArcGISDynamicMapServiceLayer, but I didn't set any min/max scale levels for the layers when I published the MXD. I figured it'd be best to do this programmatically, but I can't figure out how.

Can I set the min/max scale levels independently for each layer in the ArcGISDynamicMapServiceLayer? If not, what's the best way to approach this?

Thanks!

EDIT

Can someone explain to me how this question isn't clear? I don't believe it could get any more clear.

Answer 1

What you can do, is to check the expected Visibility at a particular zoomlevel, and change the layer's VisibleLayers appropriately. The map's zoom-end even is one place where you could check it.

Assume that I have a DynamicMapService with 5 Layers in it. I'll define the layervisiblity with something like this:

var layerVisibilityInfo=[
    {id:0, maxScale:25000, minScale:200000},
    {id:1, maxScale:15000, minScale:250000},
    {id:2, maxScale:100000, minScale:6000000},
    {id:3, maxScale:40000, minScale:1000000},
    {id:4, maxScale:4000, minScale:1000000},
    {id:5, maxScale:1, minScale:6000000}
    ];

Note that the maxScale is always less than the minScale.

I'll now listen to the zoom-end event and set the layervisibility, with some code like this:

map.on('zoom-end', function(extent, zoomFactor, anchor){

    var currentScale=map.getScale();
    var l=layerVisibilityInfo.length;
    var visible=[];
    for(var i=0;i<l;i++){
        var layerInfo=layerVisibilityInfo[i];
        if((layerInfo.maxScale<currentScale)&&(layerInfo.minScale>currentScale)){
            visible.push(layerInfo.id);
        }
    }

    //This is my ArcGISDynamicMapService
    adminLayer.setVisibleLayers(visible, false);

});