Stacked Spline Area Chart

Apr 25, 2025
4 minutes to read

Short Description

The Stacked Spline Area Chart is represented by the StackedSplineArea3DSeriesView object, which belongs to Area Series Views. This view is similar to Stacked Area Chart, but plots a fitted curve through each data point in a series.

A Stacked Spline Area chart is shown in the image below.

View Example: Create a 3D Stacked Spline Area Chart

Note

If two stacked areas contain data points for different arguments, points for missing arguments are not treated as zero-value points.

A Stacked Spline Area chart can display series containing data points with positive or negative values. However, a series with positive values is stacked only with other series containing positive values; and a series with negative values is stacked with other series containing negative values.

Note that if a series contains data points with both positive and negative values, it is treated as a series with positive values, while all its negative values are treated as zeros.

Chart Type Characteristics

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

Feature	Value
Series View type	StackedSplineArea3DSeriesView
Diagram type	XYDiagram3D
Number of arguments per series point	1
Number of values per series point	1

Note

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

Example

The following example demonstrates how to create a ChartControl with two series of the StackedSplineArea3DSeriesView type, set their 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.

C#
VB.NET

csharp

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

private void Form1_Load(object sender, EventArgs e) {
    // Create an empty chart.
    ChartControl stackedSplineArea3DChart = new ChartControl();

    // Create two series of the StackedSplineArea3D view type.
    Series series1 = new Series("Series 1", ViewType.StackedSplineArea3D);
    Series series2 = new Series("Series 2", ViewType.StackedSplineArea3D);

    // Populate both series with points.
    series1.Points.Add(new SeriesPoint("A", 80));
    series1.Points.Add(new SeriesPoint("B", 20));
    series1.Points.Add(new SeriesPoint("C", 50));
    series1.Points.Add(new SeriesPoint("D", 30));
    series2.Points.Add(new SeriesPoint("A", 40));
    series2.Points.Add(new SeriesPoint("B", 60));
    series2.Points.Add(new SeriesPoint("C", 20));
    series2.Points.Add(new SeriesPoint("D", 80));

    // Add the series to the chart.
    stackedSplineArea3DChart.Series.AddRange(new Series[] {
        series1,
        series2});

    // Adjust the view-type-specific options of the series.
    ((StackedSplineArea3DSeriesView)series1.View).LineTensionPercent = 10;
    ((StackedSplineArea3DSeriesView)series2.View).LineTensionPercent = 90;

    // Access the diagram's options.
    ((XYDiagram3D)stackedSplineArea3DChart.Diagram).ZoomPercent = 110;

    // Add a title to the chart and hide the legend.
    ChartTitle chartTitle1 = new ChartTitle();
    chartTitle1.Text = "3D Stacked Spline Area Chart";
    stackedSplineArea3DChart.Titles.Add(chartTitle1);
    stackedSplineArea3DChart.Legend.Visible = false;

    // Add the chart to the form.
    stackedSplineArea3DChart.Dock = DockStyle.Fill;
    this.Controls.Add(stackedSplineArea3DChart);
}

Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    ' Create an empty chart.
    Dim stackedSplineArea3DChart As New ChartControl()

    ' Create two series of the StackedSplineArea3D view type.
    Dim series1 As New Series("Series 1", ViewType.StackedSplineArea3D)
    Dim series2 As New Series("Series 2", ViewType.StackedSplineArea3D)

    ' Populate both series with points.
    series1.Points.Add(New SeriesPoint("A", 80))
    series1.Points.Add(New SeriesPoint("B", 20))
    series1.Points.Add(New SeriesPoint("C", 50))
    series1.Points.Add(New SeriesPoint("D", 30))
    series2.Points.Add(New SeriesPoint("A", 40))
    series2.Points.Add(New SeriesPoint("B", 60))
    series2.Points.Add(New SeriesPoint("C", 20))
    series2.Points.Add(New SeriesPoint("D", 80))

    ' Add the series to the chart.
    stackedSplineArea3DChart.Series.AddRange(New Series() { series1, series2})

    ' Adjust the view-type-specific options of the series.
    CType(series1.View, StackedSplineArea3DSeriesView).LineTensionPercent = 10
    CType(series2.View, StackedSplineArea3DSeriesView).LineTensionPercent = 90

    ' Access the diagram's options.
    CType(stackedSplineArea3DChart.Diagram, XYDiagram3D).ZoomPercent = 110

    ' Add a title to the chart and hide the legend.
    Dim chartTitle1 As New ChartTitle()
    chartTitle1.Text = "3D Stacked Spline Area Chart"
    stackedSplineArea3DChart.Titles.Add(chartTitle1)
    stackedSplineArea3DChart.Legend.Visible = False

    ' Add the chart to the form.
    stackedSplineArea3DChart.Dock = DockStyle.Fill
    Me.Controls.Add(stackedSplineArea3DChart)
End Sub

Tip

A complete sample project is available in the DevExpress Code Examples database at https://supportcenter.devexpress.com/ticket/details/e1043/chart-for-winforms-how-to-create-a-3d-stacked-spline-area-chart.