title: Hide some graphic elements, c3js, without unloading data
body: <p>Is it possible to hide certain lines, bars and other graphic elements from a c3js chart, without unloading or hiding data?</p>
  
  <p>I wish to keep that data in the tooltip but hide some graphic elements. Hover over one bar and see data for other hidden bars. </p>
  
  <p>I know about the hide method - <code>chart.hide(['data2', 'data3']);</code> - but this also deletes the data from the tooltip.</p>
  
  <p>My question is not discussed in the <a href="http://c3js.org/gettingstarted.html" rel="nofollow noreferrer">documentation</a> it seems.</p>
  
  <p>A <a href="https://stackoverflow.com/questions/27187814/get-value-data-hidden-on-c3js">similar issue</a> in November was not solved.</p>
  
  <p>I don't have any code right now - just looking for an alternative to making a custom tooltip.</p>
  
  <p>Thanks</p>