title: jqplot customize xaxis time interval - time series
body: <p>This is the first time I post a question here.  If there is anything nonsense, please advice.
  I have a graph to plot 2 lines on the same graph by jqplots. The codes are here:</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  $(document).ready(function(){
      var line1=&lt;%=PfStr %&gt;;
      var line2=&lt;%=BmkStr %&gt;;
  //    var dateValues = ["30/9/2013", "31/12/2013", "31/3/2014", "30/6/2014", "30/9/2014"];
      var plot1 = $.jqplot('chart1', [line1, line2], {
          axesDefaults: {
              tickRenderer: $.jqplot.CanvasAxisTickRenderer,
          },
          axes:{
              xaxis:{
                  renderer:$.jqplot.DateAxisRenderer,
                  tickOptions:{
                      formatString:'%#d-%b-%y',
                      angle: 90
                  },
                  max: '&lt;%=lasttick %&gt;',
                  min: '&lt;%=firsttick %&gt;'
  //                ,
  //                ticks: dateValues
              },
              yaxis:{
                  tickOptions:{
                      formatString:'%.2f'
                  }
              }
          },
          highlighter: {
              show: true,
              sizeAdjust: 7.5
          },
          cursor: {
              show: true,
              tooltipLocation:'sw'
          },
          series:[
              {color:'#0000ff', lineWidth:2, markerOptions:{show: false}},
              {color:'#ff0000', lineWidth:2, markerOptions:{show: false}}
          ]
      });
  });
  &lt;/script&gt;
  </code></pre>
  
  <p>In above graph, the ticks are automatically generated.  Instead, I would like to customize the ticks by replace as the end of each quarter.  Then I try to add the ticks for the code (Uncommon the values array and the options in xaxis).  However, the graph is not outcome as expected(I have not enough reputation to post a graph here).</p>
  
  <p>Would you please help to figure out is there synchronize problem to the renderers or any other coding problem?  Thanks.</p>