title: Show gap of missing data with Highstock
body: <p>Using Highstock to chart a sorted time serie: <code>[[timestamp, value], ...]</code></p>
  
  <p>The datasource is sampled at irregular intervals. As result the distances between two points (in the time axis) varies.</p>
  
  <p>If two adjacent points are separated for more than 5 minutes I want to show a gap in the chart.</p>
  
  <p>Using the <code>gapSize</code> option doesn't work, because it doesn't allows to specify the 'size' of the gap as a function of time.</p>
  
  <p>Showing gaps is already a part of Highstock, I just need a way to specify it as a fixed amount of time (5 minutes). Ideas?</p>
  
  <p>Btw, beside that the plot works great.</p>