Full-Stacked Spline Area Chart

Apr 21, 2025
4 minutes to read

Short Description

The Full-Stacked Spline Area Chart (100% Stacked Spline Area Chart) is represented by the FullStackedSplineAreaSeriesView object, which belongs to Area Series Views. This view is similar to Full-Stacked Area Chart, but plots a fitted curve through each data point in a series.

A Full-Stacked Spline Area chart is shown in the image below. Note that this chart type is based upon the XYDiagram, so it can be rotated to show areas either vertically or horizontally.

View Example: Create a Full-Stacked Spline Area Chart

Note

A Full-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	FullStackedSplineAreaSeriesView
Diagram type	2D-XYDiagram
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 Full-Stacked Spline Area Chart , refer to the Series Views Compatibility document.

Example

The following example demonstrates how to create a ChartControl with a series of the FullStackedSplineAreaSeriesView 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 add all required 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 fullStackedSplineAreaChart = new ChartControl();

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

    // 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.
    fullStackedSplineAreaChart.Series.AddRange(new Series[] {
        series1,
        series2});

    // Adjust the view-type-specific options of the series.
    ((FullStackedSplineAreaSeriesView)series1.View).LineTensionPercent = 80;
    ((FullStackedSplineAreaSeriesView)series2.View).Transparency = 80;

    // Access the diagram's options.
    ((XYDiagram)fullStackedSplineAreaChart.Diagram).Rotated = true;

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

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

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 fullStackedSplineAreaChart As New ChartControl()

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

    ' 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.
    fullStackedSplineAreaChart.Series.AddRange(New Series() { series1, series2})

    ' Adjust the view-type-specific options of the series.
    CType(series1.View, FullStackedSplineAreaSeriesView).LineTensionPercent = 80
    CType(series2.View, FullStackedSplineAreaSeriesView).Transparency = 80

    ' Access the diagram's options.
    CType(fullStackedSplineAreaChart.Diagram, XYDiagram).Rotated = True

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

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

Tip

A complete sample project is available in the DevExpress Code Examples database at https://supportcenter.devexpress.com/ticket/details/e1052/charts-for-winforms-how-to-create-a-full-stacked-spline-area-chart.