title: Drawing Time Sequence for different stations
body: <p>I have a simulator which simulates the the behavior of 802.11n network. The simulator generates XML file which contains information about the back-off procedure happening in each station in the simulation campaign like:</p>
  
  <ol>
  <li><p>When a station was granted an access to the medium.</p></li>
  <li><p>How much time the station was backed off.</p></li>
  <li><p>How much time the station is occupying a channel to send a packet.</p></li>
  </ol>
  
  <p>So my question, is there any existing library in Python or Java that might help to draw these sequences, something like the attached image <img src="https://i.stack.imgur.com/P27Sv.jpg" alt="enter image description here">.</p>