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Spline Area Chart

  • 3 minutes to read

Short Description

The Spline Area Chart is represented by the SplineArea3DSeriesView object, which belongs to Area Series Views. This view is similar to Area Chart, but plots a fitted curve through each data point in a series.

A Spline Area chart is shown in the image below.


Chart Type Characteristics

The table below lists the main characteristics of this chart type.

Feature Value
Series View type SplineArea3DSeriesView
Diagram type XYDiagram3D
Number of arguments per series point 1
Number of values per series point 1


For information on which chart types can be combined with the Spline Area Chart, refer to the Series Views Compatibility document.


The following example demonstrates how to create a ChartControl with a series of the SplineArea3DSeriesView type, set its general properties, and add this chart to a form at runtime. Before proceeding with this example, first create a Windows Forms Application in Visual Studio, and include all necessary assemblies to the References list of your project.

Then, add the following code to the Form.Load event handler.

using System;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart.
    ChartControl SplineAreaChart3D = new ChartControl();

    // Add a spline area series to it.
    Series series1 = new Series("Series 1", ViewType.SplineArea3D);

    // Add points to the series.
    series1.Points.Add(new SeriesPoint("A", 12));
    series1.Points.Add(new SeriesPoint("B", 4));
    series1.Points.Add(new SeriesPoint("C", 17));
    series1.Points.Add(new SeriesPoint("D", 7));
    series1.Points.Add(new SeriesPoint("E", 12));
    series1.Points.Add(new SeriesPoint("F", 4));
    series1.Points.Add(new SeriesPoint("G", 17));
    series1.Points.Add(new SeriesPoint("H", 7));

    // Add both series to the chart.

    // Access labels of the series.
    ((Area3DSeriesLabel)series1.Label).Visible = true;
    ((Area3DSeriesLabel)series1.Label).ResolveOverlappingMode =

    // Access another series options.
    series1.PointOptions.PointView = PointView.ArgumentAndValues;

    // Customize the view-type-specific properties of the series.
    SplineArea3DSeriesView myView = (SplineArea3DSeriesView)series1.View;
    myView.AreaWidth = 4;
    myView.LineTensionPercent = 50;

    // Access the diagram's options.
    ((XYDiagram3D)SplineAreaChart3D.Diagram).ZoomPercent = 110;
    ((XYDiagram3D)SplineAreaChart3D.Diagram).VerticalScrollPercent = 10;

    // Add a title to the chart and hide the legend.
    ChartTitle chartTitle1 = new ChartTitle();
    chartTitle1.Text = "3D Spline Area Chart";
    SplineAreaChart3D.Legend.Visible = false;

    // Add the chart to the form.
    SplineAreaChart3D.Dock = DockStyle.Fill;
See Also