A demo of the dotted or dashed background grid

This uses the relatively new 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 them but currently (May 2013) it's only supported in Chrome.

obj.Set('background.grid.dashed', true);
obj.Set('background.grid.dotted', true);
[No canvas support] [No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.line.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs1" width="600" height="250">[No canvas support]</canvas>
<canvas id="cvs2" width="600" height="250">[No canvas support]</canvas>
This is the code that generates the chart:
<script>
    line1 = new RGraph.Line({
        id: 'cvs1',
        data: [4,5,3,8,4,9,6,5,3],
        options: {
            xaxisLabels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Joe'],
            backgroundGridDashed: true,
            title: 'A dashed background grid',
            titleSize: 16,
            titleBold: true,
            marginTop: 35
        }
    }).draw();


    line2 = new RGraph.Line({
        id: 'cvs2',
        data: [4,5,3,8,4,9,6,5,3],
        options: {
            xaxisLabels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Joe'],
            title: 'A dotted background grid',
            titleSize: 16,
            titleBold: true,
            backgroundGridDotted: true,
            marginTop: 35
        }
    }).draw();
</script>