title: How to add new points to OxyPlot?
body: <p>This is the code that Oxyplot official page shows.
  namespace WpfApplication2</p>
  
  <pre><code>{
      using System.Collections.Generic;
  
      using OxyPlot;
  
      public class MainViewModel
      {
          public MainViewModel()
          {
              this.Title = "Example 2";
              this.Points = new List&lt;DataPoint&gt;
                                {
                                    new DataPoint(0, 4),
                                    new DataPoint(10, 13),
                                    new DataPoint(20, 15),
                                    new DataPoint(30, 16),
                                    new DataPoint(40, 12),
                                    new DataPoint(50, 12)
                                };
          }
  
          public string Title { get; private set; }
  
          public IList&lt;DataPoint&gt; Points { get; private set; }
      }
  }
  </code></pre>
  
  <p>This is the XAML </p>
  
  <pre><code>&lt;Window x:Class="WpfApplication2.MainWindow"
          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:oxy="http://oxyplot.codeplex.com"
          xmlns:local="clr-namespace:WpfApplication2"
          Title="Example 2 (WPF)" Height="350" Width="525"&gt;
      &lt;Window.DataContext&gt;
          &lt;local:MainViewModel/&gt;
      &lt;/Window.DataContext&gt;
      &lt;Grid&gt;
          &lt;oxy:Plot Title="{Binding Title}"&gt;
              &lt;oxy:Plot.Series&gt;
                  &lt;oxy:LineSeries ItemsSource="{Binding Points}"/&gt;
              &lt;/oxy:Plot.Series&gt;
          &lt;/oxy:Plot&gt;
      &lt;/Grid&gt;
  &lt;/Window&gt;
  </code></pre>
  
  <p>The example just works fine and shows 6 points on the graph.
  What I want to do is plotting a graph of the data which comes through Serial Port. I want to add new points to graph in the DispatcherTimer's Tick event. To eliminate any misunderstanding, My question's scope is about oxyplot,(not, for example, usage of timer event should be included in answer.) Thank you in advance.</p>