The properties below can be accessed at design time through the Polar node in the ChartGroupsCollection Editor. 

Charting Degrees or Radians

The Degrees property of the Polar class sets whether the X data values for polar charts reflect angles in degrees (True) or radians (False). The Degrees property can be accessed at design time through the Polar node of the ChartGroups Collection Editor.

If Degrees is set to False and the chart reflects Radian values, then C1Chart provides the option of having the chart annotated with ratios of Pi rather than radians. Setting the PiRatioAnnotations property of the Polar class to True will annotate the X values in ratios of Pi.

Setting the Starting Angle

The Start property of the Polar class sets the starting angle for Polar charts. The default setting for this property is 0. Setting this property to a value other than 0 will move the origin of the chart counter-clockwise by the specified amount. For instance, setting the Start property to 90 rotates the Polar chart 90 degrees in the counter-clockwise direction.