/// <summary>
/// Renders a point feature layer using a continuous color gradient to represent density of points.
/// </summary>
/// <remarks>
/// 
/// </remarks>
/// <returns>
/// </returns>
internal static Task HeatMapRenderersAsync()
{
//Check feature layer name
//Code works with the U.S. Cities feature layer available with the ArcGIS Pro SDK Sample data
var featureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType <FeatureLayer>().FirstOrDefault(f => f.Name == "U.S. Cities");
if (featureLayer == null)
{
MessageBox.Show("This renderer works with the U.S. Cities feature layer available with the ArcGIS Pro SDK Sample data", "Data missing");
return(Task.FromResult(0));
}
return(QueuedTask.Run(() =>
{
//defining a heatmap renderer that uses values from Population field as the weights
HeatMapRendererDefinition heatMapDef = new HeatMapRendererDefinition()
{
Radius = 20,
WeightField = SDKHelpers.GetNumericField(featureLayer),
ColorRamp = SDKHelpers.GetColorRamp(),
RendereringQuality = 8,
UpperLabel = "High Density",
LowerLabel = "Low Density"
};
CIMHeatMapRenderer heatMapRndr = (CIMHeatMapRenderer)featureLayer.CreateRenderer(heatMapDef);
featureLayer.SetRenderer(heatMapRndr);
}));
}
/// <summary>
/// Renders a point feature layer using a continuous color gradient to represent density of points.
/// </summary>
/// <remarks>
/// 
/// </remarks>
/// <param name="featureLayer"></param>
/// <returns>
/// </returns>
internal static Task HeatMapRenderersAsync(FeatureLayer featureLayer)
{
return(QueuedTask.Run(() =>
{
//defining a heatmap renderer that uses values from Population field as the weights
HeatMapRendererDefinition heatMapDef = new HeatMapRendererDefinition()
{
Radius = 20,
WeightField = SDKHelpers.GetNumericField(featureLayer),
ColorRamp = SDKHelpers.GetColorRamp(),
RendereringQuality = 8,
UpperLabel = "High Density",
LowerLabel = "Low Density"
};
CIMHeatMapRenderer heatMapRndr = (CIMHeatMapRenderer)featureLayer.CreateRenderer(heatMapDef);
featureLayer.SetRenderer(heatMapRndr);
}));
}
