title: How do I display a Line Graph in Xamarin.Forms that can show detail popups and horizontal lines for thresholds on IOS and Android?
body: <p>How do I display a Line Graph in Xamarin.Forms that can show: </p>
  
  <ol>
  <li><p>detail popups (when you press a data point, more info comes up for it such as date and time and it's numeric value for instance)</p></li>
  <li><p>horizontal lines for thresholds (similar to <a href="https://stackoverflow.com/questions/6826094/show-a-threshold-line-in-flex-chart">Show a threshold line in Flex Chart</a> but for Xamarin). </p></li>
  </ol>
  
  <p>I've looked at <a href="https://stackoverflow.com/questions/36988949/graphing-for-xamarin-forms">Graphing for Xamarin.Forms</a> and haven't found exactly what I'm looking for yet. Note: I'm using <a href="https://github.com/aloisdeniel/Microcharts" rel="nofollow noreferrer">https://github.com/aloisdeniel/Microcharts</a> at the moment. </p>
  
  <p>Must be Free and I prefer open-source. If there's no way to do it, how to make a custom renderer either over top of MicroCharts (what I'm using now) or from scratch? Would SkiaSharp work for this purpose as it's a 2d drawing library/framework? Also MUST work on both IOS and Android.</p>