title: How to make intermittent lines to represent periods of presence and absence on a given line during it's length on Multi Axis chart?
body: <p>I have a multiaxis chart that represent the historic statistic of positions for mexican soccer teams during the whole existance of the Mexican league itself.</p>
  
  <p>Some of those teams either disappear, change identity or have bad results and are downgraded to 2nd League.</p>
  
  <p>However, Multilinear Axis chart seems to represent only constant lines, thus I cannot nullify a period or epoch in the chart for some teams.</p>
  
  <p>Example:
  <a href="http://eliezer.rocks/ligamx/historico.php" rel="nofollow noreferrer">http://eliezer.rocks/ligamx/historico.php</a></p>
  
  <p>Note: since only 20 positions exist in the league, and in the chart, I assign a obviously off-the-limits for teams whom disappeared. Such as position 25, but this is not the best. Maybe we should be able to represent periods on the charts.</p>
  
  <p>Went through documentation, tried myself to understand the code and add the feature but failed.</p>
  
  <p><a href="http://eliezer.rocks/ligamx/historico.php" rel="nofollow noreferrer">http://eliezer.rocks/ligamx/historico.php</a></p>
  
  <p>It's all unencoded, unencrypted.</p>
  
  <p>As a Chart.js user 
  I would like to be able to nullify periods for a line in multi axis chart,
  So I can represent use case of a line with epochs or periods.</p>