MapPieSettings.HoleRadiusPercent Property

Gets or sets a hole radius as a percent of the size of a map pie chart.

Namespace: DevExpress.Xpf.Map

Assembly: DevExpress.Xpf.Map.v19.1.dll

Declaration

C#

public double HoleRadiusPercent { get; set; }

VB.NET

Public Property HoleRadiusPercent As Double

Property Value

Type	Description
Double	A Double object specifying a hole radius as a percent.

Property Paths

You can access this nested property as listed below:

Object Type	Path to HoleRadiusPercent
PieChartDataAdapter	.PieSettings.HoleRadiusPercent

Example

MapPieSettings allows specifying parameters of generated map pie charts. It can be accessed using the PieChartDataAdapter.PieSettings property.

This class contains the following properties that allow customizing the map pie chart appearance.

• MapPie.RotationDirection - allows specifying the rotation direction of pie segments.
• MapPie.RotationAngle - allows specifying the rotation angle of pie segments.
• MapPie.HoleRadiusPercent - allows specifying the hole radius as a percentage value.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-customize-the-appearance-of-automatically-generated-map-pie-charts-t212908.

MainWindow.xaml

<dxm:PieChartDataAdapter DataSource="{Binding Source={StaticResource pieData}, XPath=Table1}" 
    ItemIdDataMember="Country" ItemMinSize="10" ItemMaxSize="50">
    <dxm:PieChartDataAdapter.Mappings>
        <dxm:MapPieMappingInfo Latitude="CapitalLat" Longitude="CapitalLon" 
                               SegmentId="MedalClass" SegmentValue="Quantity"/>
    </dxm:PieChartDataAdapter.Mappings>
    <dxm:PieChartDataAdapter.PieSettings>
        <dxm:MapPieSettings 
            HoleRadiusPercent="{Binding ElementName=seHoleRadius, Path=Value}"
            RotationDirection="{Binding ElementName=cbRotationDirection, Path=SelectedValue}"
            RotationAngle="{Binding ElementName=seRotationAngle, Path=Value}"/>
    </dxm:PieChartDataAdapter.PieSettings>
</dxm:PieChartDataAdapter>

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the HoleRadiusPercent property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

customize-appearance-of-generated-pie-chart-items-t183429/VB/Wpf_MapControl_PieChartDataAdapter/MainWindow.xaml#L60

<dxm:PieChartDataAdapter.PieSettings>
    <dxm:MapPieSettings HoleRadiusPercent="50" RotationAngle="90"
                        RotationDirection="CounterClockwise" />

how-to-customize-the-appearance-of-automatically-generated-map-pie-charts-t212908/VB/MapPieSettingsExample/MainWindow.xaml#L67

<dxm:MapPieSettings
    HoleRadiusPercent="{Binding ElementName=seHoleRadius, Path=Value}"
    RotationDirection="{Binding ElementName=cbRotationDirection, Path=SelectedValue}"