A filled spline Line chart

[No canvas support]

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.dynamic.js"></script>
<script src="RGraph.common.tooltips.js"></script>
<script src="RGraph.common.effects.js"></script>
<script src="RGraph.line.js"></script>
Put this where you want the chart to show up: 
<canvas id="cvs" width="600" height="250">
    [No canvas support]
</canvas>

<button onclick="accumulative = !accumulative; line.Set('filled.accumulative', accumulative); RGraph.redraw();"> Toggle accumulative</button>
This is the code that generates the chart: 
<script>
    accumulative = true;

    This is the code that generates the chart: