Unique value renderer - specifying values?

Question

I'm looking to programmatically construct a unique value renderer to match the following symbology I've applyed to a layer in ArcGIS Pro:

In my example, my layer has a field "Operator" with 100 unique values. I want one symbology class (blue) for a couple of these values "BP PLC" and "CNOOC LIMITED", and one symbology class (red) for all other values. So it appears like this in the ToC:

How can I achieve this using the Pro SDK, if at all?  I've looked at snippets but can only find code for a basic unique value renderer with a colour ramp. I can't see how to specify which individual values have which symbol class.

Many thanks

Anonymous User · Answer

Working nicely, thanks again.

Anonymous User · Answer

Thank you Uma, this looks like what I need! Will give this a go.

UmaHarano · Answer

Hi Luke The images did not come thorough, but I think I get what you are trying to do with the UniqueValueRenderer. Here is a code snippet that will symbolize fields with specific symbols based on values, instead of using a color ramp. You have to modify the CIMUniqueValueRenderer to get what you are trying to do. internal static Task UniqueValueRenderer(FeatureLayer featureLayer) { return QueuedTask.Run(() => { //The goal is to construct the CIMUniqueValueRenderer which will be applied to the feature layer. // To do this, the following are the objects we need to set the renderer up with the fields and symbols. // As a reference, this is the USCities dataset. Snippet will create a unique value renderer that applies // specific symbols to all the cities in California and Alabama. The rest of the cities will use a default symbol. // First create a "CIMUniqueValueClass" for the cities in Alabama. List<CIMUniqueValue> listUniqueValuesAlabama = new List<CIMUniqueValue> { new CIMUniqueValue { FieldValues = new string[] { "Alabama" } } }; CIMUniqueValueClass alabamaUniqueValueClass = new CIMUniqueValueClass { Editable = true, Label = "Alabama", Patch = PatchShape.Default, Symbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.RedRGB).MakeSymbolReference(), Visible = true, Values = listUniqueValuesAlabama.ToArray() }; // Create a "CIMUniqueValueClass" for the cities in California. List<CIMUniqueValue> listUniqueValuescalifornia = new List<CIMUniqueValue> { new CIMUniqueValue { FieldValues = new string[] { "California" } } }; CIMUniqueValueClass californiaUniqueValueClass = new CIMUniqueValueClass { Editable = true, Label = "California", Patch = PatchShape.Default, Symbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.BlueRGB).MakeSymbolReference(), Visible = true, Values = listUniqueValuescalifornia.ToArray() }; //Create a list of the above two CIMUniqueValueClasses List<CIMUniqueValueClass> listUniqueValueClasses = new List<CIMUniqueValueClass> { alabamaUniqueValueClass, californiaUniqueValueClass }; //Create a list of CIMUniqueValueGroup CIMUniqueValueGroup uvg = new CIMUniqueValueGroup { Classes = listUniqueValueClasses.ToArray(), }; List<CIMUniqueValueGroup> listUniqueValueGroups = new List<CIMUniqueValueGroup> { uvg }; //Create the CIMUniqueValueRenderer CIMUniqueValueRenderer uvr = new CIMUniqueValueRenderer { UseDefaultSymbol = true, DefaultLabel = "all other values", DefaultSymbol = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.GreyRGB).MakeSymbolReference(), Groups = listUniqueValueGroups.ToArray(), Fields = new string[] { "STATE_NAME" } }; //Set the feature layer's renderer. featureLayer.SetRenderer(uvr); }); }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Thanks Uma