A radar chart (also known as spider chart) is a visual interpretation of data bearing multiple dimensions. With the radial grid like structure, the chart displays the values of different categories on its axis. Radar charts are primarily used as a data comparison tool to visually correlate and contrast entities over its diverse aspects such as growth against benchmarks, progress over several criteria etc.

What is the general XML format for radar charts?

The general xml format is:

<chart caption='Radar Chart' anchorAlpha='0'>
     <categories>
        <category label='Index 1' />
        <category label='Index 2' />
        <category label='Index 3' />
        <category label='Index 4' />
        <category label='Index 5' />
        <category label='Index 6' />
        <category label='Index 7' />
        <category label='Index 8' />
        <category label='Index 9' />
        <category label='Index 10' />
        <category label='Index 11' />
     </categories>
     <dataset seriesName='Series 1'>
        <set value='9' />
        <set value='9' />
        <set value='9' />
        <set value='7' />
        <set value='8' />
        <set value='8' />
        <set value='9' />
        <set value='9' />
        <set value='9' />
        <set value='7' />
        <set value='8' />
     </dataset>
     <dataset seriesName='Series 2'>
        <set value='5' />
        <set value='3' />
        <set value='2' />
        <set value='4' />
        <set value='5' />
        <set value='9' />
        <set value='5' />
        <set value='3' />
        <set value='2' />
        <set value='4' />
        <set value='5' />
     </dataset>
  </chart>

For complete list of attributes to customize a Radar chart please visit Radar Chart Specification Sheet.