Pie Chart Zero Slices

If all but one slice is zero, the > zero slice does not get drawn.

HTML

<script language="javascript" type="text/javascript" src="https://bitbucket.org/cleonello/jqplot/raw/b5a7796a9ebf/src/jquery.jqplot.js"></script>
<script language="javascript" type="text/javascript" src="https://bitbucket.org/cleonello/jqplot/raw/81ec4eb933068c5009958b504feef3f27e1b1129/src/plugins/jqplot.pieRenderer.js"></script>
<script language="javascript" type="text/javascript" src="https://bitbucket.org/cleonello/jqplot/src/e8af8a37f0f14ea1e8c630ecfe6f1b1933794036/src/plugins/jqplot.highlighter.js"></script>
<div id="chart2"></div>

JavaScript

$(document).ready(function () {
var data = [
    ['Heavy Industry', 12],['Retail', 9], ['Light Industry', 14], 
    ['Out of home', 16],['Commuting', 7], ['Orientation', 9]
  ];
    plot2 = jQuery.jqplot('chart2', [ data ], {
        seriesDefaults: {
            shadow: false,
            renderer: jQuery.jqplot.PieRenderer,
            rendererOptions: {
                padding: 2,
                sliceMargin: 2,
                showDataLabels: true,
                 
                highlightMouseOver: true
            },
            highlighter: {
                show: true,
                formatString: '%s',
                tooltipLocation: 'sw',
                useAxesFormatters: false
            }
        }
    });

    $('#chart2').bind('jqplotDataHighlight',                    
    function (ev, seriesIndex, pointIndex, data) {
        console.log("jqplotDataHighlight for " + data)
        var $this = $(this);
        $this.attr('title', data[0] + ": " + data[1]);
    });
    $("#chart2").bind('jqplotDataUnhighlight', function (ev, seriesIndex, pointIndex, data) {
        console.log("jqplotDataUnhighlight for " + data)
        var $this = $(this);
        $this.attr('title', "");
    });
});