title: How to set height of Barplot?
body: <p>I try to set the height of a result of one barplot.</p>
  
  <p>Can someone help me ?</p>
  
  <p>Actually, I have this result ?</p>
  
  <p><a href="https://i.stack.imgur.com/kEIrC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kEIrC.png" alt="enter image description here"></a></p>
  
  <p>Thank you</p>