title: Extracting XY Coordinates from QTCharts (a line series) on Mouse click
body: <p>I'm trying to pick the X and Y Coordinates from a 2D Chart in QT when a mouse click is done on the 2D Chart widget.</p>
  
  <p>I tried to use the mapFromScene , mapToValue and other similar functions that are available in the QTChart Library. But I'm unable to get the values.</p>
  
  <p><a href="https://i.stack.imgur.com/qBQhq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qBQhq.png" alt="Sample 2D Chart"></a></p>
  
  <p><a href="https://i.stack.imgur.com/V5joe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V5joe.png" alt="Expected Output for XY Co-ords Extraction"></a></p>