A Radar chart that has been set to have no concentric rings on the background grid - just some radial lines that emanate outwards from the center.
This goes in the documents header:<script src="RGraph.svg.common.core.js"></script> <script src="RGraph.svg.radar.js"></script>Put this where you want the chart to show up:
<div style="width: 600px; height: 500px" id="chart-container"></div>This is the code that generates the chart: