ScatterSplineSeries

Overview

The ScatterSplineSeries are represented on the chart as data points connected with curved line segments. The ScatterSplineSeries inherit from theScatterPointSeries class and also require both axes of the chart to be of type NumericalAxis.

Features

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

Example

Here is an example of how to create a basic RadCartesianChart with ScatterSplineSeries 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:ScatterSplineSeries ItemsSource="{Binding ScatterData}">
      <telerikChart:ScatterSplineSeries.XValueBinding>
        <telerikChart:PropertyNameDataPointBinding PropertyName="XValue"/>
      </telerikChart:ScatterSplineSeries.XValueBinding>
      <telerikChart:ScatterSplineSeries.YValueBinding>
        <telerikChart:PropertyNameDataPointBinding PropertyName="YValue"/>
      </telerikChart:ScatterSplineSeries.YValueBinding>
    </telerikChart:ScatterSplineSeries>
  </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 ScatterSplineSeries in code:

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

var series = new ScatterSplineSeries();
series.SetBinding(ScatterSplineSeries.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;
    }
}

Here is the result:

Basic ScatterSplineSeries

Here we make some customization:

var series = new ScatterSplineSeries { Stroke = new Color(0.6, 0.6, 0.9), StrokeThickness = 5 };