Spline Chart

Oct 02, 2023
3 minutes to read

Short Description

The Spline Chart is represented by the Spline3DSeriesView object, which belongs to Line Series Views. This view is similar to Line Chart, but plots a fitted curve through each data point in a series.

A Spline 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	Spline3DSeriesView
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 Spline Chart , refer to the Series Views Compatibility document.

Example

The following example demonstrates how to create a ChartControl with a series of the Spline3DSeriesView 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.

C#
VB.NET

csharp

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

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart.
    ChartControl SplineChart3D = new ChartControl();

    // Add a spline series to it.
    Series series1 = new Series("Series 1", ViewType.Spline3D);

    // 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.
    SplineChart3D.Series.Add(series1);

    // Access labels of the series.
    ((Line3DSeriesLabel)series1.Label).Visible = true;
    ((Line3DSeriesLabel)series1.Label).ResolveOverlappingMode =
        ResolveOverlappingMode.Default;

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

    // Customize the view-type-specific properties of the series.
    Spline3DSeriesView myView = (Spline3DSeriesView)series1.View;
    myView.LineWidth = 5;
    myView.LineThickness = 4;
    myView.LineTensionPercent = 50;

    // Access the diagram's options.
    ((XYDiagram3D)SplineChart3D.Diagram).ZoomPercent = 110;
    ((XYDiagram3D)SplineChart3D.Diagram).VerticalScrollPercent = 10;

    // Add a title to the chart and hide the legend.
    ChartTitle chartTitle1 = new ChartTitle();
    chartTitle1.Text = "3D Spline Chart";
    SplineChart3D.Titles.Add(chartTitle1);
    SplineChart3D.Legend.Visible = false;

    // Add the chart to the form.
    SplineChart3D.Dock = DockStyle.Fill;
    this.Controls.Add(SplineChart3D);
}

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 a new chart.
    Dim SplineChart3D As New ChartControl()

    ' Add a spline series to it.
    Dim series1 As New Series("Series 1", ViewType.Spline3D)

    ' 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.
    SplineChart3D.Series.Add(series1)

    ' Access labels of the series.
    CType(series1.Label, Line3DSeriesLabel).Visible = True
    CType(series1.Label, Line3DSeriesLabel).ResolveOverlappingMode = _ 
        ResolveOverlappingMode.Default

    ' Access another series options.
    series1.Label.PointOptions.PointView = PointView.ArgumentAndValues

    ' Customize the view-type-specific properties of the series.
    Dim myView As Spline3DSeriesView = CType(series1.View, Spline3DSeriesView)
    myView.LineWidth = 5
    myView.LineThickness = 4
    myView.LineTensionPercent = 50

    ' Access the diagram's options.
    CType(SplineChart3D.Diagram, XYDiagram3D).ZoomPercent = 110
    CType(SplineChart3D.Diagram, XYDiagram3D).VerticalScrollPercent = 10

    ' Add a title to the chart and hide the legend.
    Dim chartTitle1 As New ChartTitle()
    chartTitle1.Text = "3D Spline Chart"
    SplineChart3D.Titles.Add(chartTitle1)
    SplineChart3D.Legend.Visible = False

    ' Add the chart to the form.
    SplineChart3D.Dock = DockStyle.Fill
    Me.Controls.Add(SplineChart3D)
End Sub