HeatMapRendererDefinition Class

In This Topic

Represents a heat map renderer definition to draw point features as a density surface.

Object Model

Syntax

C#
Visual Basic (Declaration)

public class HeatMapRendererDefinition : RendererDefinition

Public Class HeatMapRendererDefinition 
   Inherits RendererDefinition

Remarks

Once you define a heat map renderer, you can call a FeatureLayer's CreateRenderer and SetRenderer methods to create and assign a renderer to a point feature layer.

Only applicable for point feature layers.

Example

Create a Heatmap Renderer

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(() =>
{
  //defining a heatmap renderer that uses values from Population field as the weights
  HeatMapRendererDefinition heatMapDef = new HeatMapRendererDefinition()
  {
    Radius = 20,
    WeightField = "Population",
    ColorRamp = colorRamp.ColorRamp,
    RendereringQuality = 8,
    UpperLabel = "High Density",
    LowerLabel = "Low Density"
  };

  FeatureLayer flyr = MapView.Active.Map.Layers[0] as FeatureLayer;
  CIMHeatMapRenderer heatMapRndr = flyr.CreateRenderer(heatMapDef) as CIMHeatMapRenderer;
  flyr.SetRenderer(heatMapRndr);
});

Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Mapping.LayerDrawingDefinition
      ArcGIS.Desktop.Mapping.RendererDefinition
         ArcGIS.Desktop.Mapping.HeatMapRendererDefinition

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

HeatMapRendererDefinition Members
ArcGIS.Desktop.Mapping Namespace

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