ScatterAreaSeries

Overview

RadCartesianChart visualizes ScatterAreaSeries as the area enclosed by the coordinate axes and straight line segments that connect the series data points. The ScatterAreaSeries inherit from the ScatterPointSeries class and also require both axes of the chart to be of type NumericalAxis.

Features

ScatterAreaSeries provides the following properties to change its style:

  • Stroke (Color): changes the color used to draw lines.
  • StrokeThickness (double): changes the width of the lines.
  • Fill (Color): changes the color of the chart area.

Example

Here is an example of how to create a basic RadCartesianChart with ScatterAreaSeries in xaml:

<telerikChart:RadCartesianChart>
  <telerikChart:RadCartesianChart.BindingContext>
    <viewMoedls:ScatterViewModel/>
  </telerikChart:RadCartesianChart.BindingContext>
  <telerikChart:RadCartesianChart.HorizontalAxis>
    <telerikChart:NumericalAxis/>
  </telerikChart:RadCartesianChart.HorizontalAxis>
  <telerikChart:RadCartesianChart.VerticalAxis>
    <telerikChart:NumericalAxis/>
  </telerikChart:RadCartesianChart.VerticalAxis>
  <telerikChart:RadCartesianChart.Series>
    <telerikChart:ScatterAreaSeries ItemsSource="{Binding ScatterData}">
      <telerikChart:ScatterAreaSeries.XValueBinding>
        <telerikChart:PropertyNameDataPointBinding PropertyName="XValue"/>
      </telerikChart:ScatterAreaSeries.XValueBinding>
      <telerikChart:ScatterAreaSeries.YValueBinding>
        <telerikChart:PropertyNameDataPointBinding PropertyName="YValue"/>
      </telerikChart:ScatterAreaSeries.YValueBinding>
    </telerikChart:ScatterAreaSeries>
  </telerikChart:RadCartesianChart.Series>
</telerikChart:RadCartesianChart>

Where:

xmlns:telerikChart="clr-namespace:Telerik.XamarinForms.Chart;assembly=Telerik.XamarinForms.Chart"

Here is an example of how to create a RadCartesianChart with ScatterAreaSeries in code:

var chart = new RadCartesianChart
{
    HorizontalAxis = new NumericalAxis(),
    VerticalAxis = new NumericalAxis(),
    BindingContext = new ScatterViewModel()
};

var series = new ScatterAreaSeries();
series.SetBinding(ScatterAreaSeries.ItemsSourceProperty, new Binding("ScatterData"));   
series.XValueBinding = new PropertyNameDataPointBinding("XValue");
series.YValueBinding = new PropertyNameDataPointBinding("YValue");

chart.Series.Add(series);

Here is the sample data:

public class NumericalData
{
    public double XValue { get; set; }
    public double YValue { get; set; }
}

public class ScatterViewModel
{
    private static Random random = new Random();

    public ScatterViewModel()
    {
        this.ScatterData = GetScatterData(10, 0.1, 0.1, this.GenerateX, this.GenerateY);
    }

    public ObservableCollection<NumericalData> ScatterData { get; set; }

    public static ObservableCollection<NumericalData> GetScatterData(int dataCount, double xDispersion, double yDispersion, Func<int, double> xFunc, Func<int, double> yFunc)
    {
        var data = new ObservableCollection<NumericalData>();
        for (int i = 0; i < dataCount; i++)
        {
            data.Add(new NumericalData() { XValue = xFunc(i) + xDispersion * random.NextDouble(), YValue = yFunc(i) + yDispersion * random.NextDouble() });
        }

        return data;
    }

    private double GenerateX(int i)
    {
        return 1 + Math.Sin(i);
    }

    private double GenerateY(int i)
    {
        return i;
    }
}

Basic ScatterAreaSeries

Here we make some customization:

var series = new ScatterAreaSeries { Stroke = new Color(0.6, 0.6, 0.9), StrokeThickness = 5, Fill = new Color(0.8, 0.8, 1) };