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Dynamically limiting the extent of an ArcGISDynamicMapServerLayer

Question asked by srbjlb on Apr 13, 2017

We have a few ArcGISDynamicMapServerLayers that are querying several hundred thousand lines.  We can dynamically limit the results that the layer is querying by using the layerDefinitions, like this:


var layerDynamic = new ArcGISDynamicMapServiceLayer(myUrl);

var layerDefinitions = [];

layerDefinitions[0] = "City = 'MyCity'";



This works great and really improves performance.  However, if I want to limit the layer by a given Extent, can I do that?  For example, if a user zooms to a particular county, then I want to limit the ArcGISDynamicMapServiceLayer by that county's polygon shape extent.