title: Is there a option in highcharts like the 'ordinal' in highstock?
body: <p>I use highchart and could need the option 'ordinal' like in highstock.
  So, my xAxis is a datetime axis and the data loads out of a database. On weekends, there are no data available, but the gaps between the data-points should always be the same.
  <a href="http://api.highcharts.com/highstock#xAxis.ordinal" rel="nofollow">This is the option in highstock</a></p>
  
  <p>Does anybody know how I can realise this without using highstock?
  I tried with using categories instead of datetime, but there are too much data-points, so they all overlap</p>