A basic Gauge charts example

This goes in the documents header:

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

Put this where you want the chart to show up:

<canvas id="cvs" width="300" height="300">
    [No canvas support]
</canvas>

This is the code that generates the chart:

<script>
    new RGraph.Gauge({
        id: 'cvs',
        min: 0,
        max: 100,
        value: 78,
        options: {
            textAccessible: true
        }
    }).draw();
</script>