title: Convert Highcharts stacked daily column from "day" to "month" view
body: <p>I've googled around to be able to do this but haven't found the exact solution. Basically, I have a chart with daily data, and I was wondering if there is a way to dynamically convert the chart to a "month" view? I'm trying to see if I can achieve this without making a separate request to my RESTful API to return back grouped data. </p>
  
  <p>Here is a js fiddle: <a href="http://jsfiddle.net/qenE8/1/" rel="nofollow">http://jsfiddle.net/qenE8/1/</a></p>
  
  <p>My goal is to have a dropdown with "Day" and "Month" views. Thanks in advance for your help. </p>
  
  <p>My current object for the xAxis property is this:</p>
  
  <pre><code>              xAxis: {
  
                      "type": "datetime",
                      "minTickInterval": 86400000,
                      dateTimeLabelFormats: {
                          day: '%m/%d/%y' // mm/dd/yy
                      }
                  }
  </code></pre>