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Change Transparency of Layer in MapService

Question asked by gopre400 on Jul 20, 2015
Latest reply on Jul 20, 2015 by schlot

Hi, I'm trying to change the transparency of a layer in a map service. I have looked at examples and have tried different things but nothing seems to change the transparency. What am I missing?

map = new Map("map", {                 

basemap: "streets",                 

center: [-117.42330, 47.751103],                 

zoom: 11             

});             

var roadLayer = new esri.layers.ArcGISDynamicMapServiceLayer("http://gisappserv3/ArcGIS/rest/services/SCOUT/ENGINEERINGqueries/MapServer",

{   

id: "roadLayer",                 

visible: true             

});             

roadLayer.setVisibleLayers([28]);             

map.addLayers([roadLayer]);             

var optionsArray = [];             

var drawingOptions = new LayerDrawingOptions();             

drawingOptions.transparency = 50;             

optionsArray[28] = drawingOptions;             

map.roadLayer.setLayerDrawingOptions(optionsArray);

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