GraduatedColorsRendererDefinition Constructor(String,ClassificationMethod,Int32,CIMColorRamp,CIMSymbolReference)

In This Topic

Create a GraduateColorRendererDefinition.

Syntax

C#
Visual Basic (Declaration)

public GraduatedColorsRendererDefinition( 
   string classificationField,
   ClassificationMethod classificationMethod,
   int breakCount,
   CIMColorRamp colorRamp,
   CIMSymbolReference symbolTemplate
)

Public Function New( _
   ByVal classificationField As String, _
   Optional ByVal classificationMethod As ClassificationMethod, _
   Optional ByVal breakCount As Integer, _
   Optional ByVal colorRamp As CIMColorRamp, _
   Optional ByVal symbolTemplate As CIMSymbolReference _
)

Parameters

classificationField: Classification field.
classificationMethod: (Optional) Statistical algorithm to compute breaks. (default value = NaturalaBreaks)
breakCount: (Optional) Number of breaks. (default value = 5)
colorRamp: (Optional) Color ramp to apply to those classes.
symbolTemplate: (Optional) A template for symbol used in the renderer.

Example

Create a feature layer with class breaks renderer with defaults

await QueuedTask.Run(() =>
{
  var featureLayerCreationParams = new FeatureLayerCreationParams(new Uri(@"c:\data\countydata.gdb\counties"))
  {
    Name = "Population Density (sq mi) Year 2010",
    RendererDefinition = new GraduatedColorsRendererDefinition("POP10_SQMI")
  };
  LayerFactory.Instance.CreateLayer<FeatureLayer>(
    featureLayerCreationParams,
    MapView.Active.Map
  );
});

Create a feature layer with class breaks renderer

string colorBrewerSchemesName = "ColorBrewer Schemes (RGB)";
StyleProjectItem style = Project.Current.GetItems<StyleProjectItem>().First(s => s.Name == colorBrewerSchemesName);
string colorRampName = "Greens (Continuous)";
IList<ColorRampStyleItem> colorRampList = await QueuedTask.Run(() =>
{
  return style.SearchColorRamps(colorRampName);
});
ColorRampStyleItem colorRamp = colorRampList[0];

await QueuedTask.Run(() =>
{
  GraduatedColorsRendererDefinition gcDef = new GraduatedColorsRendererDefinition()
  {
    ClassificationField = "CROP_ACR07",
    ClassificationMethod = ArcGIS.Core.CIM.ClassificationMethod.NaturalBreaks,
    BreakCount = 6,
    ColorRamp = colorRamp.ColorRamp,
    SymbolTemplate = SymbolFactory.Instance.ConstructPolygonSymbol(
                            ColorFactory.Instance.GreenRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
    ExclusionClause = "CROP_ACR07 = -99",
    ExclusionSymbol = SymbolFactory.Instance.ConstructPolygonSymbol(
                            ColorFactory.Instance.RedRGB, SimpleFillStyle.Solid, null).MakeSymbolReference(),
    ExclusionLabel = "No yield",
  };
  var featureLayerCreationParams = new FeatureLayerCreationParams((new Uri(@"c:\Data\CountyData.gdb\Counties")))
  {
    Name = "Crop",
    RendererDefinition = gcDef
  };
  LayerFactory.Instance.CreateLayer<FeatureLayer>(featureLayerCreationParams, MapView.Active.Map);
});

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

GraduatedColorsRendererDefinition Class
GraduatedColorsRendererDefinition Members
Overload List

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