<script src="RGraph.common.core.js"></script> <script src="RGraph.thermometer.js"></script>Put this where you want the chart to show up:
<canvas id="cvs" width="100" height="400">
[No canvas support]
</canvas>
This is the code that generates the chart:
<script>
new RGraph.Thermometer({
id: 'cvs',
min: -10,
max: 40,
value: 7,
options: {
scaleVisible: true
}
}).draw();
</script>