PieChartDataAdapter.Mappings Property

Contains information on how data for chart items should be obtained from a data source.

Assembly : DevExpress.Xpf.Map.v25.2.dll

Declaration

C#
VB.NET

csharp

public MapPieMappingInfo Mappings { get; set; }

Public Property Mappings As MapPieMappingInfo

Property Value

Type	Description
MapPieMappingInfo

A MapPieMappingInfo object.

Example

To automatically generate pie chart items from a datasource do the following.

Create a PieChartDataAdapter object and assign it to the VectorLayer.Data property.
Bind a data source to the DataSourceAdapterBase.DataSource property of the object.
Specify mappings to assign data fields to pie segment properties. To do this, specify the MapPointMappingInfoBase.Latitude, MapPointMappingInfoBase.Longitude, MapPieMappingInfo.SegmentValue and MapPieMappingInfo.SegmentId properties of the MapPieMappingInfo object assigned to the PieChartDataAdapter.Mappings property.
Specify the ChartDataSourceAdapter.ItemIdDataMember property to group generated pie segments to pie charts.

View Example

MainWindow.xaml

xaml

<dxm:VectorLayer.Data>
    <dxm:PieChartDataAdapter DataSource="{Binding Source={StaticResource dataProvider}, XPath=Table1}" 
                             ItemIdDataMember="Country" ItemMinSize="20" ItemMaxSize="60">
        <dxm:PieChartDataAdapter.MeasureRules>
            <dxm:MeasureRules RangeStops="1 10 20 30 40"/>
        </dxm:PieChartDataAdapter.MeasureRules>
        <dxm:PieChartDataAdapter.AttributeMappings>
            <dxm:MapItemAttributeMapping Member="Name" Name="Name"/>
        </dxm:PieChartDataAdapter.AttributeMappings>
        <dxm:PieChartDataAdapter.Mappings>
            <dxm:MapPieMappingInfo Latitude="CapitalLat" Longitude="CapitalLon" 
                                   SegmentId="MedalClass" SegmentValue="Quantity"/>
        </dxm:PieChartDataAdapter.Mappings>
    </dxm:PieChartDataAdapter>
</dxm:VectorLayer.Data>