title: How to draw a circle within OxyPlot AngleAxis and MagnitudeAxis?
body: <p>My plot model class is</p>
  
  <pre><code>public class MyViewModel
  {
      public PlotModel model { get; private set; }
  
      public MyViewModel()
      {
          model = new PlotModel();
          AngleAxis a = new AngleAxis();
          a.Minimum = 0;
          a.Maximum = 360;
          MagnitudeAxis m = new MagnitudeAxis();
          m.Minimum = 0;
          m.Maximum = 1000;
          model.Axes.Add(a);
          model.Axes.Add(m);          
      }
  }
  </code></pre>
  
  <p>And I want to draw just a simple circle of 500 radius.
  So in my MainWindow class I put</p>
  
  <pre><code>public partial class MainWindow : Window
  {
      MyViewModel _myModel = new MyViewModel();
  
      public MainWindow()
      {
          InitializeComponent();
  
          oxpMyView.Model = _myModel.model;
  
          FunctionSeries f = new FunctionSeries((x) =&gt; 500, 0, 360, 0.1);
          oxpMyView.Model.Series.Add(f);
      }
  </code></pre>
  
  <p>But instead of circle, I see just a single line like this</p>
  
  <p><a href="https://i.stack.imgur.com/jXyXL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jXyXL.png" alt="enter image description here"></a></p>
  
  <p>What am I doing wrong and how do I draw circle properly within polar plot?</p>