Circular Charts

Polar Chart

A polar chart is a circular graph in which data is displayed in terms of values and angles.

Key Features:

• Provides options to perform a visual comparison between several quantitative or qualitative aspects of a situation.
• Also, when charts are drawn for several situations using the same axes (poles), a visual comparison between the situations may be made.
• X value, of the data point, is used to set the angle.
• Y value defines the distance from the center of the graph.
  

Radar Chart

Radar chart is a clock face form of a line chart.

Key Features:

• Compares the aggregate values of a number of data series.
• Represents each data series as a line around a central point.
• Provides a graphical display of the differences between actual and ideal performance.
• Serves useful for defining performance and identifying strengths and weaknesses.