Radar plots are used to compare the degree to which two or more data series are similar or different from each other.
To create a radar chart you have to select circle chart in mark type, and radar in chart type.
Then you have to link to “Size” the quantitative variable that will be represented on the radial axes. The categorical variable that defines how many different axes the chart will have must be linked to “Subdivision” (you must also link to “Label” if you want the axes to be labeled).
To plot more than one data series together, the categorical variable that specifies how many different series to display must be linked to “Color”.