IlvRadarChart Class Reference

Implementation of radar charts. More...

#include <ilviews/charts/radar.h>

Inheritance diagram for IlvRadarChart:

List of all members.

Public Member Functions
	IlvRadarChart (IlvDisplay *display, const IlvRect &bbox, IlBoolean useGrid=IlFalse, IlvPalette *palette=0, IlvPalette *gridPalette=0)
	Constructor.
virtual IlBoolean	addDisplayer (IlvAbstractChartDisplayer *displayer, IlUInt count, IlvChartDataSet *const *dataSets, IlvCoordinateInfo *ordinateInfo=0, IlUInt position=IlvLastPositionIndex)
	Adds a displayer connected to several data sets.

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Detailed Description

Implementation of radar charts.

Library: ilvcharts

Example of a radar chart:

See also:

IlvPolarChart.

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Constructor & Destructor Documentation

IlvRadarChart::IlvRadarChart	(	IlvDisplay *	display,
		const IlvRect &	bbox,
		IlBoolean	useGrid = IlFalse,
		IlvPalette *	palette = 0,
		IlvPalette *	gridPalette = 0
	)

Constructor.

Initializes a new IlvRadarChart object. The constructor creates a polar chart with two default scales. The associated projector is an instance of IlvPolarProjector initialized with startingAngle and range. The abscissa scale is an instance of IlvCircularScaleDisplayer and the ordinate scale is an instance of IlvRectangularScaleDisplayer.

Warning:

[note] The value set for range depends on the data you want to display with the current polar chart. If the data that will be finally projected into screen coordinates have their abscissa that are expressed in degrees, the range range must be equal to 0. Otherwise it must represent the angle range within which the data will be projected on the screen. See the IlvPolarProjector class for more details.

Parameters:

	display	The display connection that will handle the drawing of this object.
	bbox	The initial bounding box of the chart graphic.
	useGrid	A Boolean indicating whether grids should be added to created scales.
	startingAngle	The starting angle of the associated polar projector.
	range	The range of the associated polar projector.
	orientedClockwise	A Boolean indicating whether the projector should be oriented clockwise (IlTrue) or counter-clockwise (IlFalse).
	palette	The palette associated with the chart.
	gridPalette	The palette associated with the grids. (This is meaningful only if useGrid is equal to IlTrue).

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Member Function Documentation

virtual IlBoolean IlvRadarChart::addDisplayer	(	IlvAbstractChartDisplayer *	displayer,
		IlUInt	count,
		IlvChartDataSet *const *	dataSets,
		IlvCoordinateInfo *	ordinateInfo = 0,
		IlUInt	position = IlvLastPositionIndex
	)			[virtual]

Adds a displayer connected to several data sets.

A displayer is used to render one or several data sets that are part of the chart data object used by the current chart graphic. A chart graphic can be rendered using multiple displayers.

Parameters:

	displayer	The displayer to add to this chart graphic.
	count	The number of data sets that this displayer must render.
	dataSets	An array of count pointers to the data sets that must be displayed by displayer. Note that all the indicated data sets must belong to the chart data object used by the current chart graphic.
	ordinateInfo	The coordinate information object associated with the ordinate scale that this displayer must follow. If this parameter is omitted or set to 0, the displayer will be connected to the main (the first) ordinate scale. If this parameter is not 0, then ordinateInfo must be one of the coordinate information objects associated with an ordinate scale of the chart graphic.
	position	The index of the new displayer. If this parameter is not specified, or set to IlvLastPositionIndex, this displayer becomes the last of that chart graphic. A value of 0 indicates that the displayer becomes the bottom-most displayer (that is, the first to be displayed).

Returns:

A Boolean value that indicates, if IlTrue, that the new displayer was successfully added. If this method returns IlFalse, then there was a problem, and an error message was produced.

Reimplemented from IlvChartGraphic.