.NET MAUI Chart ScatterPoint Series

The ScatterPoint Series are represented on the chart as data points that are not connected. Each scatter data point has to provide values for the X and Y coordinates on the RadCartesianChart. The ScatterPoint Series require both axes of the chart to be Numerical Axes.

Features

The ScatterPoint Series provides the following properties:

• XValueBinding—Defines the binding that will be used to fill the XValue of the ScatterDataPoint members of the DataPoints collection.
• YValueBinding—Defines the binding that will be used to fill the YValue of the ScatterDataPoint members of the DataPoints collection.

Example

The following example shows how to create a RadCartesianChart with a ScatterPoint Series:

1. Create the needed business objects, for example:

• C#

public class NumericalData
{
    public double XData { get; set; }
    public double YData { get; set; }
}

2. Create a ViewModel:

• C#

public class SeriesNumericalViewModel
{
    public ObservableCollection<NumericalData> Data1 { get; set; }
    public ObservableCollection<NumericalData> Data2 { get; set; }

    public SeriesNumericalViewModel()
    {
        this.Data1 = GetNumericData1();
        this.Data2 = GetNumericData2();
    }

    public static ObservableCollection<NumericalData> GetNumericData1()
    {
        var data = new ObservableCollection<NumericalData>
        {
            new NumericalData { XData = 2, YData = 13 },
            new NumericalData { XData = 19, YData = 31 },
            new NumericalData { XData = 22, YData = 33 },
            new NumericalData { XData = 28, YData = 35 },
            new NumericalData { XData = 33, YData = 46 },
            new NumericalData { XData = 38, YData = 34 },
            new NumericalData { XData = 49, YData = 66 },
            new NumericalData { XData = 55, YData = 24 },
            new NumericalData { XData = 62, YData = 41 },
        };
        return data;
    }
    public static ObservableCollection<NumericalData> GetNumericData2()
    {
        var data = new ObservableCollection<NumericalData>
        {
            new NumericalData { XData = 7, YData = 13 },
            new NumericalData { XData = 19, YData = 17 },
            new NumericalData { XData = 22, YData = 19 },
            new NumericalData { XData = 28, YData = 21 },
            new NumericalData { XData = 33, YData = 35 },
            new NumericalData { XData = 38, YData = 43 },
            new NumericalData { XData = 49, YData = 15 },
            new NumericalData { XData = 55, YData = 21 },
            new NumericalData { XData = 62, YData = 47 },
        };
        return data;
    }
}

3. Use the following snippet to declare a RadCartesianChart with a ScatterPoint Series in XAML and in C#:

• XAML

<telerik:RadCartesianChart PaletteName="LightSelected">
    <telerik:RadCartesianChart.BindingContext>
        <local:SeriesNumericalViewModel />
    </telerik:RadCartesianChart.BindingContext>
    <telerik:RadCartesianChart.HorizontalAxis>
        <telerik:NumericalAxis LabelFitMode="MultiLine" />
    </telerik:RadCartesianChart.HorizontalAxis>
    <telerik:RadCartesianChart.VerticalAxis>
        <telerik:NumericalAxis />
    </telerik:RadCartesianChart.VerticalAxis>
    <telerik:RadCartesianChart.Series>
        <telerik:ScatterPointSeries XValueBinding="XData"
                                 YValueBinding="YData"
                                 ItemsSource="{Binding Data1}" />
        <telerik:ScatterPointSeries XValueBinding="XData"
                                 YValueBinding="YData"
                                 ItemsSource="{Binding Data2}" />
    </telerik:RadCartesianChart.Series>
</telerik:RadCartesianChart>

The following image shows the end result: