title: How to draw Log graph
body: <p>I want to set data of duty On/Off and rest time in Log graph like:</p>
  
  <p><img src="https://i.stack.imgur.com/Torqo.jpg"></p>
  
  <p>as well user can edit the data like this:</p>
  
  <p><img src="https://i.stack.imgur.com/hpcqA.jpg"> </p>