Radar Chart is an effective type of data visualization for comparative analysis. Each variable is represented on axes. All axes use one scale and are arranged radially within the same distance from each other. A series is shown on Radar Charts as a line that forms a closed polygonal chain by connecting data points on the axes, and in this way it displays the value of the phenomenon in question in a given category.
Radar Charts make it possible to compare values both to each other within a single data set (in a single-series Radar Chart) and in a certain category across several or many data sets (in a multi-series Radar Chart).
When using the Radar Chart type, it is important to remember the following:
- reading a chart with a large amount of series can be complicated,
- there should be at least three axes, while too many axes can make a chart illegible.