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.scatter.js"></script>

Put this where you want the chart to show up:

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

This is the code that generates the chart:

<script>
    new RGraph.Scatter({
        id: 'cvs1',
        data: [[50,50]],
        options: {
            backgroundGridDashed: true,
            xmax: 150,
            labels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Jobe'],
            title: 'A dashed background grid',
            gutterTop: 35
        }
    }).draw();

    new RGraph.Scatter({
        id: 'cvs2',
        data: [[50,50]],
        options: {
            backgroundGridDotted: true,
            xmax: 150,
            labels: ['Mal', 'Barry', 'Gary', 'Neil', 'Kim', 'Pete', 'Lou', 'Fred', 'Jobe'],
            title: 'A dotted background grid',
            gutterTop: 35
        }
    }).draw();
</script>