ArcGIS Developer Help

ISymbolArray Interface

Provides access to members that work with an array of symbols.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Members

	Name	Description
	AddSymbol	Adds a symbol to the array.
	ClearSymbols	Removes all symbols from the array.
	DeleteSymbol	Delete the given symbol.
	MoveSymbol	Moves the given symbol to new index position.
	Symbol	The symbol at the index position.
	SymbolCount	The number of symbols.

Classes that implement ISymbolArray

Classes	Description
BarChartSymbol	Defines a bar chart symbol.
DotDensityFillSymbol	Defines a dot density fill symbol, a data driven symbol commonly used with the dot density renderer.
PieChartSymbol	Defines a pie chart symbol.
StackedChartSymbol	Defines a stacked chart symbol.

Remarks

You can use this interface to work with the properties of a data driven symbol that is comprised of other symbols. Chart symbols are an example of a data driven symbol, as are dot density fill symbols. These symbols are designed only to be used by a ChartRenderer and a DotDensityRenderer respectively.

ISymbolArray is a generic interface that provides access to members that manage the individual symbols that make up the data driven symbols mentioned above. For example, for a PieChartSymbol, Symbol(i) provides access to the fill symbol for the ith pie slice. When rendered, this slice is mapped to a particular field in the data whose value for a particular feature determines the size of the pie slice. For a dot density renderer, Symbol(i) represents the marker symbol used to represent the density of values in the ith field added to the DotDensityRenderer.

You can use MoveSymbol to change the order of the individual symbols that make up a chart symbol or dot density fill symbol. For example, changing the order of symbols for a BarChartSymbol changes the order that bars/columns will appear on the map.