IPieChartRenderer Interface

Provides access to members that work with additional chart renderer properties specific to pie charts.

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Members

	All Properties Methods	Description
	FlanneryCompensation	Indicates if Flannery Compensation is applied.
	MinSize	Symbol size (points) corresponding to the minimum value.
	MinValue	Minimum value (used for proportional sizing).
	ProportionalBySum	Indicates if the size of pie chart symbols is determined by the sum of the values.
	ProportionalField	Field used to determine size of the pie chart symbols.
	ProportionalFieldAlias	Field alias for the proportional field.

CoClasses that implement IPieChartRenderer

Remarks

Use this interface to set up sizing properties for a ChartRenderer that displays pie charts. If you want all of your pies to appear as the same size, then you do not need to use this interface.

There are three options for chart sizing. First, pies can all be the same size. Second, pies can be sized by the sum of the values making up the pie. For this set ProportionalBySum = True. Third, pies can be sized by a data value from a particular field. For this, set ProportionalField. As with other data values, this field is normalized before the pie is sized. You can change text string that appears in the legend for this field by setting the ProportionalFieldAlias. If you don't set this, ProportionalField will be used in the renderer's legend entry.

For either the second or third sizing options, you must set some additional properties on this interface. Set MinSize to the size in points of the radius of the smallest pie chart. Set MinValue to the data value corresponding to MinSize. FlanneryCompensation is a flag that indicates whether or not appearance compensation is applied when sizing the pie charts. See IProportionalSymbolRenderer::FlanneryCompensation to learn more. Generally it is advisable to set this to True.