BoxPlotSeries2D.CapWidthPercentage Property

Gets or sets the cap width of a Box Plot series point as percentage.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v24.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#

public double CapWidthPercentage { get; set; }

VB.NET

Public Property CapWidthPercentage As Double

Property Value

Type	Description
Double	A number that specifies the cap width as the percentage of box width.

Remarks

Set the CapWidthPercentage property value to 100 to make the cap width equal to the box plot point width.

Example

This example shows how to create a Box Plot chart:

1. Create a ChartControl and specify its ChartControl.Diagram property to a XYDiagram2D object. Note that the ChartControl.Diagram is a content property. You can declare a diagram in XAML directly after a chart control’s declaration without wrapping it in opening and closing ChartControl.Diagram tags.

2. Add a BoxPlotSeries2D object to the Diagram.Series collection. Note that the Diagram.Series is a content property. You can declare series in XAML directly after a diagram’s declaration without wrapping them in opening and closing Diagram.Series tags.

3. Use the following properties to bind the series to data:

   • Series.DataSource - Gets or sets a datasource which contains series data points.
   • Series.ArgumentDataMember - Gets or sets the name of the data field which contains arguments for generated series points.
   • BoxPlotSeries2D.MinValueDataMember - Gets or sets the name of the data field that contains the “Min” values for the Box Plot series.
   • BoxPlotSeries2D.MaxValueDataMember - Gets or sets the name of the data field that contains the “Max” values for the Box Plot series.
   • BoxPlotSeries2D.Quartile1ValueDataMember - Gets or sets the name of the data field that contains the “First Quartile” values for the Box Plot series.
   • BoxPlotSeries2D.Quartile3ValueDataMember - Gets or sets the name of the data field that contains the “Third Quartile” values for the Box Plot series.
   • BoxPlotSeries2D.MedianValueDataMember - Gets or sets the name of the data field that contains the “Median” values for the Box Plot series.
   • BoxPlotSeries2D.MeanValueDataMember - Gets or sets the name of the data field that contains the “Mean” values for the Box Plot series. Optional parameter.
   • BoxPlotSeries2D.OutlierValuesDataMember - Gets or sets the name of the data field that contains “Outliers” for the Box Plot series. Optional parameter.

4. The following properties allow you to customize the Box Plot chart appearance:

   • BoxPlotSeries2D.CapWidthPercentage - Gets or sets the cap width of a Box Plot series point as percentage.
   • BoxPlotSeries2D.BoxWidth - Gets or sets the Box Plot’s point width measured in axis units.
   • BoxPlotSeries2D.Model - Gets or sets the model used to draw elements of a 2D Box Plot series.

Markup:

XAML

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:BoxPlotChart"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" 
        x:Class="BoxPlotChart.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="600" Width="800">
    <Window.DataContext>
        <local:ChartViewModel/>
    </Window.DataContext>
    <Grid>
        <dxc:ChartControl>
            <dxc:ChartControl.Legends>
                <dxc:Legend HorizontalPosition="Left"/>
            </dxc:ChartControl.Legends>
            <dxc:XYDiagram2D>
                <dxc:BoxPlotSeries2D DataSource="{Binding Data}"
                                     DisplayName="Box Plot"
                                     ArgumentDataMember="Argument" 
                                     MinValueDataMember="Min" 
                                     MaxValueDataMember="Max"
                                     Quartile1ValueDataMember="Quartile1" 
                                     Quartile3ValueDataMember="Quartile3" 
                                     MedianValueDataMember="Median" 
                                     MeanValueDataMember="Mean" 
                                     OutlierValuesDataMember="Outliers"
                                     CapWidthPercentage="50" 
                                     BoxWidth="0.8">
                    <dxc:BoxPlotSeries2D.Model>
                        <dxc:SimpleBoxPlot2DModel/>
                    </dxc:BoxPlotSeries2D.Model>
                </dxc:BoxPlotSeries2D>
                <dxc:XYDiagram2D.AxisX>
                    <dxc:AxisX2D TickmarksMinorVisible="False"/>
                </dxc:XYDiagram2D.AxisX>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
    </Grid>
</Window>

Code-Behind:

C#

using System.Collections.ObjectModel;
using System.Windows;
namespace BoxPlotChart {
    public partial class MainWindow : Window {
        public MainWindow() {
            InitializeComponent();
        }
    }
    public class ChartViewModel {
        public Collection<DataPoint> Data { get { return DataPoint.GetDataPoints(); } }
        public class DataPoint {
            public string Argument { get; set; }
            public double Min { get; set; }
            public double Max { get; set; }
            public double Quartile1 { get; set; }
            public double Quartile3 { get; set; }
            public double Median { get; set; }
            public double Mean { get; set; }
            public double[] Outliers { get; set; }
            public DataPoint(string argument, double min, double max, double q1, double q3, double median, double mean, double[] outliers) {
                this.Argument = argument;
                this.Min = min;
                this.Max = max;
                this.Quartile1 = q1;
                this.Quartile3 = q3;
                this.Median = median;
                this.Mean = mean;
                this.Outliers = outliers;
            }
            public static Collection<DataPoint> GetDataPoints() {
                Collection<DataPoint> data = new Collection<DataPoint> {
                    new DataPoint("June", 46, 94, 64, 76, 70, 73, new double[]{ 30, 96.3, 99.56 }),
                    new DataPoint("July", 33, 121, 66, 88, 77, 75, new double[]{ 20, 22, 132.7 }),
                    new DataPoint("August", 10, 90, 40, 60, 50, 55, new double[]{ 4, 5, 95.4, 99.3, 109 })
                };
                return data;
            }
        }
    }
}

VB.NET

Imports System.Collections.ObjectModel
Imports System.Windows

Namespace BoxPlotChart
    Public Partial Class MainWindow
        Inherits Window

        Public Sub New()
            InitializeComponent()
        End Sub
    End Class

    Public Class ChartViewModel
        Public ReadOnly Property Data As Collection(Of DataPoint)
            Get
                Return DataPoint.GetDataPoints()
            End Get
        End Property

        Public Class DataPoint
            Public Property Argument As String
            Public Property Min As Double
            Public Property Max As Double
            Public Property Quartile1 As Double
            Public Property Quartile3 As Double
            Public Property Median As Double
            Public Property Mean As Double
            Public Property Outliers As Double()

            Public Sub New(ByVal argument As String, ByVal min As Double, ByVal max As Double, ByVal q1 As Double, ByVal q3 As Double, ByVal median As Double, ByVal mean As Double, ByVal outliers As Double())
                Me.Argument = argument
                Me.Min = min
                Me.Max = max
                Me.Quartile1 = q1
                Me.Quartile3 = q3
                Me.Median = median
                Me.Mean = mean
                Me.Outliers = outliers
            End Sub

            Public Shared Function GetDataPoints() As Collection(Of DataPoint)
                Dim data As Collection(Of DataPoint) = New Collection(Of DataPoint) From {
                    New DataPoint("June", 46, 94, 64, 76, 70, 73, New Double() {30, 96.3, 99.56}),
                    New DataPoint("July", 33, 121, 66, 88, 77, 75, New Double() {20, 22, 132.7}),
                    New DataPoint("August", 10, 90, 40, 60, 50, 55, New Double() {4, 5, 95.4, 99.3, 109})
                }
                Return data
            End Function
        End Class
    End Class
End Namespace