A Bar chart with multiple independent Y axes

This demonstration shows how you can use the YAxis drawing API object to draw multiple axes on your chart.

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.drawing.yaxis.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 colors = [
            'Gradient(white:red)',
            'Gradient(white:brown)',
            'Gradient(white:blue)'
        ];
        
        var bar1 = new RGraph.Bar({
            id: 'cvs',
            data: [[2,0,0],[4,0,0],[6,0,0]],
            options: {
                strokestyle: 'rgba(0,0,0,0)',
                noaxes: true,
                ylabels: false,
                gutterLeft: 150,
                colors: colors,
                backgroundGridAutofitNumvlines: 3,
                hmargin: 25,
                hmarginGrouped: 3,
                shadowColor: '#666',
                shadowOffsetx: 2,
                shadowOffsety: 2,
                shadowBlur: 2,
                textSize: 14
            }
        }).draw()
        
        var bar2 = new RGraph.Bar({
            id: 'cvs',
            data: [[0,20,0],[0,30,0],[0,40,0]],
            options: {
                strokestyle: 'rgba(0,0,0,0)',
                noaxes: true,
                ylabels: false,
                gutterLeft: 150,
                colors: colors,
                backgroundGrid: false,
                hmargin: 25,
                hmarginGrouped: 3,
                shadowColor: '#666',
                shadowOffsetx: 2,
                shadowOffsety: 2,
                shadowBlur: 2,
                ymax: 50,
                textSize: 14
            }
        }).draw()


        var bar3 = new RGraph.Bar({
            id: 'cvs',
            data: [[0,0,70],[0,0,80],[0,0,90]],
            options: {
                strokestyle: 'rgba(0,0,0,0)',
                labels: ['Monday','Tuesday','Wednesday'],
                noyaxis: true,
                ylabels: false,
                gutterLeft: 150,
                colors: colors,
                backgroundGrid: false,
                hmargin: 25,
                hmarginGrouped: 3,
                shadowColor: '#666',
                shadowOffsetx: 2,
                shadowOffsety: 2,
                shadowBlur: 2,
                ymax: 100,
                textSize: 14
            }
        }).draw()
        

        
        var yaxis1 = new RGraph.Drawing.YAxis({
            id: 'cvs',
            x: 25,
            options: {
                max: 10,
                colors: ['red'],
                textSize: 14,
                textAccessible: true
            }
        }).draw()
        

        
        var yaxis2 = new RGraph.Drawing.YAxis({
            id: 'cvs',
            x: 75,
            options: {
                max: 50,
                colors: ['brown'],
                textSize: 14,
                textAccessible: true
            }
        }).draw()
        

        
        var yaxis3 = new RGraph.Drawing.YAxis({
            id: 'cvs',
            x: 125,
            options: {
                max: 100,
                colors: ['blue'],
                textSize: 14,
                textAccessible: true
            }
        }).draw()
    };
</script>