/// <summary>
/// Renders a feature layer using graduated symbols and natural breaks to draw quantities.
/// 
/// </summary>
/// <returns>
/// </returns>
internal static Task CBRendererGraduatedSymbols()
{
//Check feature layer name
//Code works with the USDemographics feature layer available with the ArcGIS Pro SDK Sample data
var featureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType <FeatureLayer>().FirstOrDefault(f => f.Name == "USDemographics");
if (featureLayer == null)
{
MessageBox.Show("This renderer works with the USDemographics feature layer available with the ArcGIS Pro SDK Sample data", "Data missing");
return(Task.FromResult(0));
}
return(QueuedTask.Run(() =>
{
GraduatedSymbolsRendererDefinition gsDef = new GraduatedSymbolsRendererDefinition()
{
ClassificationField = SDKHelpers.GetNumericField(featureLayer), //getting the first numeric field
ClassificationMethod = ClassificationMethod.NaturalBreaks,
MinimumSymbolSize = 4,
MaximumSymbolSize = 50,
BreakCount = 5,
ColorRamp = SDKHelpers.GetColorRamp(), //getting a color ramp
};
CIMClassBreaksRenderer renderer = (CIMClassBreaksRenderer)featureLayer.CreateRenderer(gsDef);
featureLayer?.SetRenderer(renderer);
}));
}
/// <summary>
/// Renders a feature layer using graduated symbols and natural breaks to draw quantities.
/// 
/// </summary>
/// <param name="featureLayer"></param>
/// <returns>
/// </returns>
internal static async Task CBRendererGraduatedSymbols(FeatureLayer featureLayer)
{
await QueuedTask.Run(() =>
{
GraduatedSymbolsRendererDefinition gsDef = new GraduatedSymbolsRendererDefinition()
{
ClassificationField = SDKHelpers.GetNumericField(featureLayer), //getting the first numeric field
ClassificationMethod = ClassificationMethod.NaturalBreaks,
MinimumSymbolSize = 4,
MaximumSymbolSize = 50,
BreakCount = 5,
ColorRamp = SDKHelpers.GetColorRamp(), //getting a color ramp
};
CIMClassBreaksRenderer renderer = (CIMClassBreaksRenderer)featureLayer.CreateRenderer(gsDef);
featureLayer?.SetRenderer(renderer);
});
}
protected override async void OnClick()
{
//Get all styles in the project
var styles = Project.Current.GetItems <StyleProjectItem>();
//Get a specific style in the project
StyleProjectItem style = styles.First(x => x.Name == "CustomStyle");
var results = await style.SearchSymbolsAsync(StyleItemType.PointSymbol, "Tree");
var treeSymbolItem = results.FirstOrDefault();
if (treeSymbolItem == null)
{
return;
}
var layer = MapView.Active.Map.GetLayersAsFlattenedList().FirstOrDefault(l => l.Name == "Trees") as FeatureLayer;
if (layer == null)
{
return;
}
Task t = QueuedTask.Run(() =>
{
var symbol = treeSymbolItem.Symbol as CIMPointSymbol;
symbol.SetSize(12.0);
symbol.SetColor(ColorFactory.CreateRGBColor(24, 69, 59));
var renderer = new GraduatedSymbolsRendererDefinition()
{
BreakCount = 5,
ClassificationField = "height",
ClassificationMethod = ClassificationMethod.EqualInterval,
SymbolTemplate = symbol.MakeSymbolReference(),
MinimumSymbolSize = 6.0,
MaximumSymbolSize = 20.0
};
//Update the feature layer renderer
layer.SetRenderer(layer.CreateRenderer(renderer));
});
}
