A demo of the Chrome-only dotted or dashed background grid

This uses the newer addition to canvas from the canvas v5 specification - native dotted and dashed lines. As browsers add support you will be able to use the option in those too but initially it's only supported in Chrome.

obj.Set('background.grid.dashed', true);
obj.Set('background.grid.dotted', true);

This goes in the documents header:

<script src="RGraph.common.core.js"></script>
<script src="RGraph.waterfall.js"></script>

Put this where you want the chart to show up:

<canvas id="cvs1" width="600" height="250">
<canvas id="cvs2" width="600" height="250">
    [No canvas support]
</canvas>

This is the code that generates the chart:

<script>
    window.onload = function ()
    {
        var waterfall = new RGraph.Waterfall({
            id: 'cvs1',
            data: [4,8,6,5,-5,-6,6,-5,-4,-3,2,1],
            options: {
                backgroundGridDashed: true,
                backgroundGridAutofitNumvlines: 13,
                labels: [
                    'Mal',   'Barry',
                    'Gary',  'Neil',
                    'Kim',   'Pete',
                    'Lou',   'Fred',
                    'Jobe',  'Fred',
                    'Harry', 'Jake',
                    'Total'
                ],
                title: 'A dashed background grid',
                textSize: 12,
                textAccessible: true
            }
        }).draw()




        var waterfall2 = new RGraph.Waterfall({
            id: 'cvs2',
            data: [4,8,6,5,-5,-6,6,-5,-4,-3,2,1],
            options: {
                labels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Jobe'],
                backgroundGridDotted: true,
                title: 'A dotted background grid',
                textAccessible: true
            }
        }).draw();
    };
</script>