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

This demo 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('backgroundGridDashed', true);
obj.set('backgroundGridDotted', true);
[No canvas support] [No canvas support]

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: