title: Creating a Day/Hour heatmap in Grafana
body: <p>What would be the best way to create a heatmap similar to <a href="http://bl.ocks.org/tjdecke/5558084" rel="noreferrer">this example</a> where the counts are bucketed into time hour and day buckets? </p>
  
  <p>Using the built in heatmap as well as the cal-heatmap plugin, it's only possible to create heatmaps over a period of time whereas I would like to aggregate into just the day of the week(monday, tuesday etc.) and the hour of the day.</p>