A Semi-circular Progress which has been configured with a gradient as the color. Other than that (and the units on the center label) it's a pretty standard progress.
This goes in the documents header:<script src="RGraph.svg.common.core.js"></script> <script src="RGraph.svg.semicircularprogress.js"></script>Put this where you want the chart to show up:
<div style="width: 450px; height: 250px" id="chart-container"></div>This is the code that generates the chart:
<script> scp = new RGraph.SVG.SemiCircularProgress({ id: 'chart-container', min: 0, max: 100, value: 78, options: { title: 'A meter depicting the tanks volume', colors: ['Gradient(#060:#3c3:#3c3:#3c3)'], labelsCenterDecimals: 1, labelsCenterUnitsPost: '%' } }).draw(); </script>