A Bar chart combined with a Line chart

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.effects.js"></script>
<script src="RGraph.line.js"></script>
<script src="RGraph.bar.js"></script>

Put this where you want the chart to show up:

<canvas id="cvs" width="600" height="250">
    [No canvas support]
</canvas>

This is the code that generates the chart:

<script>
    window.onload = function ()
    {
        var bar = new RGraph.Bar({
            id: 'cvs',
            data: [-2.25,-1.8,0.1,1.95,2.2,2.8,4.3,5.7,6,4.3,5.5,6.5,6.45,5.5,5.4],
            options: {
                gutterBottom: 40,
                xaxispos: 'center',
                backgroundGridAutofitNumvlines: 0,
                backgroundGridAutofitNumHlines: 8,
                ylabelsCount: 8,
                numyticks: 8,
                strokestyle: 'rgba(0,0,0,0)',
                labels: [
                    'Q1\r\n2009','Q2\r\n2009','Q3\r\n2009','Q4\r\n2009',
                    'Q1\r\n2010','Q2\r\n2010','Q3\r\n2010','Q4\r\n2010',
                    'Q1\r\n2011','Q2\r\n2011','Q3\r\n2011','Q4\r\n2011',
                    'Q1\r\n2012','Q2\r\n2012','Q3\r\n2012','Q4\r\n2012'
                ],
                ymax: 8,
                textAccessible: true
            }
        })



        //var line = new RGraph.Line({
        //    id: 'cvs',
        //    data: [-2,-1,0.5,2.2,2.8,3.2,4.7,5.7,5.9,4.5,6.5,7.5,6.8,5.8,5.8],
        //    colors: ['#000'],
        //    xaxispos: 'center',
        //    ymax: 8,
        //    linewidth: 4,
        //    tickmarks: null
        //})


        var line = new RGraph.Line({
            id: 'cvs',
            data: [-2,-1,0.5,2.2,2.8,3.2,4.7,5.7,5.9,4.5,6.5,7.5,6.8,5.8,5.8],
            options: {
                colors: ['#000'],
                xaxispos: 'center',
                ymax: 8,
                linewidth: 4,
                tickmarks: null,
                textAccessible: true
            }
        })


        var combo = new RGraph.CombinedChart(bar, line)
            .draw();
    };
</script>