title: How can I display a jqplot stacked bar graph when xaxis is text?
body: <p>I can't seem to get my jqplot bar graph to stack.  I have the following code:</p>
  
  <pre><code>// Pass/Fail rates per request
  $.jqplot('passFailPerRequestStats', [passRate, failRate], {
      title: 'Automation Pass Count Per Test Plan',
      //stackSeries: true,
      seriesDefaults: {
          renderer: $.jqplot.BarRenderer,
          renderOptions: { barMargin: 25 },
          pointLabels: { show: true, stackedValue: true }
      },
      axesDefaults: {
          tickRenderer: $.jqplot.CanvasAxisTickRenderer,
          tickOptions: {
              angle: -30,
              fontSize: '10pt'
          }
      },
      axes: {
          xaxis: {
              renderer: $.jqplot.CategoryAxisRenderer
          }
      }
  });
  </code></pre>
  
  <p>This is successfully displaying a side by side bar graph for both series.  However, when I try to stack them by uncommenting out the <code>stackSeries: true,</code> all bar graphs are taken off the graph (and all point labels are displayed on the Y axis labels).</p>
  
  <p>What am I doing wrong?</p>