XtraCharts > 示例 > 如何： 为图表添加斐波那契指标线 (运行时刻示例)

这个示例展示了如何创建某种类型 (弧形、扇形或回撤线) 的 斐波那契指标线，并把它添加到财务系列。 为了完成此任务，创建了 FibonacciIndicator 类的一个实例，并指定它的 FibonacciIndicator.Kind 属性。 然后，把此指标线添加到由 XYDiagram2DSeriesViewBase.Indicators 属性返回的系列的指标线集合中。

CodeCentralShow Me

在 DevExpress Code Central 数据库中可以找到完整的示例项目，网址是 http://www.devexpress.com/example=E966。 取决于目标平台类型 (ASP.NET、WinForms 等)，可以在线运行本示例，或者下载自动可执行的示例。

C#CopyCode image复制代码
using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create a series.
    Series series = new Series("Stock", ViewType.Stock);
    series.ArgumentScaleType = ScaleType.DateTime;

    // Populate the series with data.
    AddPoints(series);

    // Add it to the chart.
    this.chartControl1.Series.Add(series);

    // Adjust the chart's appearance.
    XYDiagram diagram = (XYDiagram)this.chartControl1.Diagram;
    diagram.AxisY.Range.AlwaysShowZeroLevel = false;
    diagram.AxisX.Label.Staggered = true;
    series.Label.Visible = false;
}

private void AddPoints(Series series) {
    series.Points.AddRange(new SeriesPoint[] {
        new SeriesPoint(new DateTime(2007, 12, 24), 
            new object[] {110.55, 112, 111.2, 111.65}),
        new SeriesPoint(new DateTime(2007, 12, 26), new object[] 
            {110.9, 112.19, 110.9, 111.56}),
        new SeriesPoint(new DateTime(2007, 12, 27), new object[] 
            {109.49, 111.3,  110.53, 109.6}),
        new SeriesPoint(new DateTime(2007, 12, 28), new object[] 
            {109.108, 110.76, 110.76, 110.09}),
        new SeriesPoint(new DateTime(2007, 12, 31), new object[] 
            {107.26, 110, 109.51, 108.1}),
        new SeriesPoint(new DateTime(2008, 1, 2), new object[] 
            {104.17, 108.99, 108.99, 104.69}),
        new SeriesPoint(new DateTime(2008, 1, 3), new object[] 
            {103.98, 105.57, 104.83, 104.9}),
        new SeriesPoint(new DateTime(2008, 1, 4), new object[] 
            {100.48, 103.95, 103.95, 101.13}),
        new SeriesPoint(new DateTime(2008, 1, 7), new object[] 
            {99.03, 101, 100.25, 100.05}),
        new SeriesPoint(new DateTime(2008, 1, 8), new object[] 
            {97.17, 100.38, 100.05, 97.59}),
        new SeriesPoint(new DateTime(2008, 1, 9), new object[] 
            {97.16, 99.15, 97.76, 98.31}),
        new SeriesPoint(new DateTime(2008, 1, 10), new object[] 
            {97.15, 100.86, 97.39, 99.92}),
        new SeriesPoint(new DateTime(2008, 1, 11), new object[] 
            {97.09, 99.46, 99.2, 97.67}),
        new SeriesPoint(new DateTime(2008, 1, 14), new object[] 
            {101.33, 105.59, 105.01, 102.93}),
        new SeriesPoint(new DateTime(2008, 1, 15), new object[] 
            {101.23, 104.04, 102.03, 101.83}),
        new SeriesPoint(new DateTime(2008, 1, 16), new object[] 
            {100.14, 102.86, 100.14, 101.63}),
        new SeriesPoint(new DateTime(2008, 1, 17), new object[] 
            {100.05, 103.45, 102, 101.1}),
        new SeriesPoint(new DateTime(2008, 1, 18), new object[] 
            {102.5, 106.72, 106.72, 103.4}),
        new SeriesPoint(new DateTime(2008, 1, 22), new object[] 
            {98.55, 103.09, 98.55, 101.22}),
        new SeriesPoint(new DateTime(2008, 1, 23), new object[] 
            {98.5, 106.335, 99.63, 106.1}),
        new SeriesPoint(new DateTime(2008, 1, 24), new object[] 
            {104.68, 107.51, 106.38, 106.91}),
        new SeriesPoint(new DateTime(2008, 1, 25), new object[] 
            {104.1, 107.79, 107.79, 104.52}),
        new SeriesPoint(new DateTime(2008, 1, 28), new object[] 
            {103.83, 105.77, 104.44, 104.98}),
        new SeriesPoint(new DateTime(2008, 1, 29), new object[] 
            {104.6, 106.8, 105.5, 106.1}),
        new SeriesPoint(new DateTime(2008, 1, 30), new object[] 
            {104.855, 107.65, 105.85, 105.65}),
        new SeriesPoint(new DateTime(2008, 1, 31), new object[] 
            {103.7, 107.97, 104.21, 107.11})
        });
}

private void btnArcs_Click(object sender, EventArgs e) {
    AddIndicator(chartControl1.Series[0], FibonacciIndicatorKind.FibonacciArcs);
}

private void btnFans_Click(object sender, EventArgs e) {
    AddIndicator(chartControl1.Series[0], FibonacciIndicatorKind.FibonacciFans);
}

private void btnRetracements_Click(object sender, EventArgs e) {
    AddIndicator(chartControl1.Series[0], FibonacciIndicatorKind.FibonacciRetracement);
}

private void AddIndicator(Series ser, FibonacciIndicatorKind kind) {
    // Get a collection of indicators.
    IndicatorCollection indicators =
        ((StockSeriesView)ser.View).Indicators;
            
    // Clear it.
    indicators.Clear();

    // Add a new indicator to it.
    indicators.Add(CreateIndicator(kind, new DateTime(2007, 12, 27), 
        new DateTime(2008, 1, 17), ValueLevel.High));
}

private FibonacciIndicator CreateIndicator(FibonacciIndicatorKind kind,
    DateTime arg1, DateTime arg2, ValueLevel level) {

    // Create the Fibonacci Indicator of the specified kind.
    FibonacciIndicator fi = new FibonacciIndicator(kind);

    // Specify its start and end points.
    fi.Point1.Argument = arg1;
    fi.Point1.ValueLevel = level;
    fi.Point2.Argument = arg2;
    fi.Point2.ValueLevel = level;

    // Select the name.
    switch (fi.Kind) {
        case FibonacciIndicatorKind.FibonacciArcs: {
                fi.Name = "Arcs";
                break;
            }
        case FibonacciIndicatorKind.FibonacciFans: {
                fi.Name = "Fans";
                break;
            }
        case FibonacciIndicatorKind.FibonacciRetracement: {
                fi.Name = "Retracement";
                break;
            }
    }

    // Make all its levels visible.
    fi.ShowLevel23_6 = true;
    fi.ShowLevel76_4 = true;
    fi.ShowLevel0 = true;
    fi.ShowLevel100 = true;
    fi.ShowAdditionalLevels = true;

    // Customize its appearance.
    fi.BaseLevelColor = Color.Green;
    fi.BaseLevelLineStyle.DashStyle = DashStyle.Dash;

    return fi;
}
Visual BasicCopyCode image复制代码
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Private Sub Form1_Load(ByVal sender As Object, _  
ByVal e As EventArgs) Handles MyBase.Load
    ' Create a series.
    Dim series As New Series("Stock", ViewType.Stock)
    series.ArgumentScaleType = ScaleType.DateTime

    ' Populate the series with data.
    AddPoints(series)

    ' Add it to the chart.
    Me.chartControl1.Series.Add(series)

    ' Adjust the chart's appearance.
    Dim diagram As XYDiagram = CType(Me.chartControl1.Diagram, XYDiagram)
    diagram.AxisY.Range.AlwaysShowZeroLevel = False
    diagram.AxisX.Label.Staggered = True
    series.Label.Visible = False
End Sub

Private Sub AddPoints(ByVal series As Series)
    series.Points.AddRange(New SeriesPoint() { _ 
    New SeriesPoint(New DateTime(2007, 12, 24), New Object() {110.55, 112, 111.2, 111.65}), _ 
    New SeriesPoint(New DateTime(2007, 12, 26), New Object() {110.9, 112.19, 110.9, 111.56}), _ 
    New SeriesPoint(New DateTime(2007, 12, 27), New Object() {109.49, 111.3, 110.53, 109.6}), _ 
    New SeriesPoint(New DateTime(2007, 12, 28), New Object() {109.108, 110.76, 110.76, 110.09}), _ 
    New SeriesPoint(New DateTime(2007, 12, 31), New Object() {107.26, 110, 109.51, 108.1}), _ 
    New SeriesPoint(New DateTime(2008, 1, 2), New Object() {104.17, 108.99, 108.99, 104.69}), _ 
    New SeriesPoint(New DateTime(2008, 1, 3), New Object() {103.98, 105.57, 104.83, 104.9}), _ 
    New SeriesPoint(New DateTime(2008, 1, 4), New Object() {100.48, 103.95, 103.95, 101.13}), _ 
    New SeriesPoint(New DateTime(2008, 1, 7), New Object() {99.03, 101, 100.25, 100.05}), _ 
    New SeriesPoint(New DateTime(2008, 1, 8), New Object() {97.17, 100.38, 100.05, 97.59}), _ 
    New SeriesPoint(New DateTime(2008, 1, 9), New Object() {97.16, 99.15, 97.76, 98.31}), _ 
    New SeriesPoint(New DateTime(2008, 1, 10), New Object() {97.15, 100.86, 97.39, 99.92}), _ 
    New SeriesPoint(New DateTime(2008, 1, 11), New Object() {97.09, 99.46, 99.2, 97.67}), _ 
    New SeriesPoint(New DateTime(2008, 1, 14), New Object() {101.33, 105.59, 105.01, 102.93}), _ 
    New SeriesPoint(New DateTime(2008, 1, 15), New Object() {101.23, 104.04, 102.03, 101.83}), _ 
    New SeriesPoint(New DateTime(2008, 1, 16), New Object() {100.14, 102.86, 100.14, 101.63}), _ 
    New SeriesPoint(New DateTime(2008, 1, 17), New Object() {100.05, 103.45, 102, 101.1}), _ 
    New SeriesPoint(New DateTime(2008, 1, 18), New Object() {102.5, 106.72, 106.72, 103.4}), _ 
    New SeriesPoint(New DateTime(2008, 1, 22), New Object() {98.55, 103.09, 98.55, 101.22}), _ 
    New SeriesPoint(New DateTime(2008, 1, 23), New Object() {98.5, 106.335, 99.63, 106.1}), _ 
    New SeriesPoint(New DateTime(2008, 1, 24), New Object() {104.68, 107.51, 106.38, 106.91}), _ 
    New SeriesPoint(New DateTime(2008, 1, 25), New Object() {104.1, 107.79, 107.79, 104.52}), _ 
    New SeriesPoint(New DateTime(2008, 1, 28), New Object() {103.83, 105.77, 104.44, 104.98}), _ 
    New SeriesPoint(New DateTime(2008, 1, 29), New Object() {104.6, 106.8, 105.5, 106.1}), _ 
    New SeriesPoint(New DateTime(2008, 1, 30), New Object() {104.855, 107.65, 105.85, 105.65}), _ 
    New SeriesPoint(New DateTime(2008, 1, 31), New Object() {103.7, 107.97, 104.21, 107.11}) })
End Sub

Private Sub btnArcs_Click(ByVal sender As Object, _ 
ByVal e As EventArgs) Handles btnArcs.Click
    AddIndicator(chartControl1.Series(0), FibonacciIndicatorKind.FibonacciArcs)
End Sub

Private Sub btnFans_Click(ByVal sender As Object, _ 
ByVal e As EventArgs) Handles btnFans.Click
    AddIndicator(chartControl1.Series(0), FibonacciIndicatorKind.FibonacciFans)
End Sub

Private Sub btnRetracements_Click(ByVal sender As Object, _ 
ByVal e As EventArgs) Handles btnRetracements.Click
    AddIndicator(chartControl1.Series(0), FibonacciIndicatorKind.FibonacciRetracement)
End Sub

Private Sub AddIndicator(ByVal ser As Series, _ 
ByVal kind As FibonacciIndicatorKind)
    ' Get a collection of indicators.
    Dim indicators As IndicatorCollection = (CType(ser.View, StockSeriesView)).Indicators

    ' Clear it.
    indicators.Clear()

    ' Add a new indicator to it.
    indicators.Add(CreateIndicator(kind, New DateTime(2007, 12, 27), _
    New DateTime(2008, 1, 17), ValueLevel.High))
End Sub

Private Function CreateIndicator(ByVal kind As FibonacciIndicatorKind, ByVal arg1 As DateTime, _
    ByVal arg2 As DateTime, ByVal level As ValueLevel) As FibonacciIndicator

    ' Create the Fibonacci Indicator of the specified kind.
    Dim fi As New FibonacciIndicator(kind)

    ' Specify its start and end points.
    fi.Point1.Argument = arg1
    fi.Point1.ValueLevel = level
    fi.Point2.Argument = arg2
    fi.Point2.ValueLevel = level

    ' Select the name.
    Select Case fi.Kind
        Case FibonacciIndicatorKind.FibonacciArcs
            fi.Name = "Arcs"
            Exit Select
        Case FibonacciIndicatorKind.FibonacciFans
            fi.Name = "Fans"
            Exit Select
        Case FibonacciIndicatorKind.FibonacciRetracement
            fi.Name = "Retracement"
            Exit Select
    End Select

    ' Make all its levels visible.
    fi.ShowLevel23_6 = True
    fi.ShowLevel76_4 = True
    fi.ShowLevel0 = True
    fi.ShowLevel100 = True
    fi.ShowAdditionalLevels = True

    ' Customize its appearance.
    fi.BaseLevelColor = Color.Green
    fi.BaseLevelLineStyle.DashStyle = DashStyle.Dash

    Return fi
End Function

Expand image参阅