Sub Type - Defines the polar chart subtype. Possible values are:
Lines - displays each series as a line connecting the subsequent data points.
Areas - displays each series as a line connecting the subsequent data points and fills the enclosed area.
Points - displays each series as points.
Range - displays each series as ranges (requires you to specify a second value and angle pair).
Vector - displays each series as vectors (requires you to specify a second value and angle pair).
Close Contour - specifies whether the chart should connect the last and first data points. Only applicable for Lines subtype.
Shape - defines the shape of the polar data points. Only applicable for Points subtype.
Size - defines the size of the polar data points. Only applicable for Points subtype.
Begin Angle - specifies the angle at which the data points with zero angle are displayed.