ChoroplethColorizer.ValueProvider Property

Provides values from the data source (Shapefile or KML file) to color map shapes according to data.

Namespace: DevExpress.UI.Xaml.Map

Assembly: DevExpress.UI.Xaml.Map.v21.2.dll

NuGet Package: DevExpress.Uwp.Controls

Declaration

C#

public IColorizerValueProvider ValueProvider { get; set; }

VB.NET

Public Property ValueProvider As IColorizerValueProvider

Property Value

Type	Description
IColorizerValueProvider	An object that implements the IColorizerValueProvider interface.

Example

To create a analytical map, it is necessary to use the ChoroplethColorizer class. Perform the following steps to create the map.

• Provide a required vector map to map control. (To learn how to do this, refer to Providing Data).
• Create an ChoroplethColorizer object and assign it to the MapControl.Colorizer property.
• Specify the MapColorizer.Colors collection of the colorizer.
• Specify the ChoroplethColorizer.RangeStops collection of the colorizer.
• Specify the ChoroplethColorizer.ValueProvider property of the colorizer.

XAML

<Map:MapControl.Colorizer>
    <Map:ChoroplethColorizer 
        RangeStops="0 3000 10000 18000 28000 44000 82000 185000 1000000 2500000 15000000">
        <Map:ChoroplethColorizer.ValueProvider>
            <Map:ShapeAttributeValueProvider AttributeName="GDP_MD_EST"/>
        </Map:ChoroplethColorizer.ValueProvider>
        <Map:ChoroplethColorizer.Colors>
            <Color>#FFFF5A19</Color>
            <Color>#FFE5E335</Color>
            <Color>#FF6EC95C</Color>
        </Map:ChoroplethColorizer.Colors>
        <Map:ChoroplethColorizer.Legend>
            <Map:ColorScaleLegend Margin="0" Header="GDP by Countries" Description="In US dollars"
                                  RangeStopsFormat="0,B" MinWidth="400" FontSize="10"/>
        </Map:ChoroplethColorizer.Legend>
    </Map:ChoroplethColorizer>
</Map:MapControl.Colorizer>