One of the available layers contains several Polylines. These lines belong to different groups, defined through a certain attribute (e.g.,
The user can click on a checkbox (among many) to select which group he wants to see. I am using setLayerDefinitions to filter the existing layer (ArcGISDynamicServiceLayer).
var queryStatement = "groupid = " + group_id // group_id is provided by the selected checkbox var layerDefinitions =  layerDefinitions = queryStatement var layer = mapServiceLayer.getLayer("layer1") layer.setLayerDefinitions(layerDefinitions)
This approach only allows to see one group at a time. How to see multiple groups at the same time and give them different colors in the map? I could combine multiple groups in the same
queryStatement, but then they would have the same color on the map.
Another possible approach is to create a FeatureLayer on-the-fly, after each checkbox is checked. Would this scale well?