ProportionalRendererDefinition Constructor(String,CIMSymbolReference,Double,Nullable<Double>,Boolean)

In This Topic

Creates a ProportionalRendererDefinition.

Syntax

C#
Visual Basic (Declaration)

public ProportionalRendererDefinition( 
   string field,
   CIMSymbolReference symbolTemplate,
   double minimumSymbolSize,
   Nullable<double> maximumSymbolSize,
   bool isMaximumSymbolSizeCapped
)

Public Function New( _
   ByVal field As String, _
   ByVal symbolTemplate As CIMSymbolReference, _
   Optional ByVal minimumSymbolSize As Double, _
   Optional ByVal maximumSymbolSize As Nullable(Of Double), _
   Optional ByVal isMaximumSymbolSizeCapped As Boolean _
)

Parameters

field: Name of the field used in the renderer.
symbolTemplate: A template for symbol used in the renderer.
minimumSymbolSize: (Optional) The minimum symbol size used in the renderer to draw features with lowest value. (default value = 4)
maximumSymbolSize: (Optional) The maximum symbol size used in the renderer to draw features with highest values. When a null value is passed in, a maximum symbol size gets automatically picked based on the layer's shape type. (default value = null)
isMaximumSymbolSizeCapped: (Optional) When false, maximumSymbolSize gets ignored and the size of the symbol is drawn proportional to the value. Otherwise, the largest symbol size is equal to maximumSymbolSize. (default value = true)

Example

Create a Proportion Renderer with max and min symbol size capped

string colorBrewerSchemesName = "ArcGIS Colors";
StyleProjectItem style = Project.Current.GetItems<StyleProjectItem>().First(s => s.Name == colorBrewerSchemesName);
string colorRampName = "Heat Map 4 - Semitransparent";
IList<ColorRampStyleItem> colorRampList = await QueuedTask.Run(() =>
{
  return style.SearchColorRamps(colorRampName);
});
ColorRampStyleItem colorRamp = colorRampList[0];

await QueuedTask.Run(() =>
{
  CIMPointSymbol pointSym = SymbolFactory.Instance.ConstructPointSymbol(ColorFactory.Instance.GreenRGB, 1.0, SimpleMarkerStyle.Circle);
  CIMSymbolReference symbolPointTemplate = pointSym.MakeSymbolReference();

  //minimum symbol size is capped to 4 point while the maximum symbol size is set to 50 point
  ProportionalRendererDefinition prDef = new ProportionalRendererDefinition("POPULATION", symbolPointTemplate, 4, 50, true)
  {

    //setting upper and lower size stops to stop symbols growing or shrinking beyond those thresholds
    UpperSizeStop = 5000000,  //features with values >= 5,000,000 will be drawn with maximum symbol size
    LowerSizeStop = 50000    //features with values <= 50,000 will be drawn with minimum symbol size
  };
  FeatureLayer flyr = MapView.Active.Map.Layers[0] as FeatureLayer;
  CIMProportionalRenderer propRndr = flyr.CreateRenderer(prDef) as CIMProportionalRenderer;
  flyr.SetRenderer(propRndr);

});

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

ProportionalRendererDefinition Class
ProportionalRendererDefinition Members
Overload List

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