Class for data sets described by a set of values. More...

#include <ilviews/charts/data.h>

Inheritance diagram for IlvChartYValueSet:

Public Member Functions
	IlvChartYValueSet (const char name=0, IlvPointInfoCollection pointInfoCollection=0)
	Constructor. More...

virtual	~IlvChartYValueSet ()
	Destructor. More...

IlBoolean	addValue (IlDouble yValue, IlvChartDataPointInfo *pointInfo=0, IlBoolean copyPointInfo=IlFalse)
	Adds a data value (and its associated point information object if any). More...

virtual IlUInt	getDataCount () const
	Returns the number of defined data items. More...

virtual void	getPoint (IlUInt i, IlvDoublePoint &point) const
	Returns a represented data point. More...

virtual IlvDoublePoint *	getPointsBetween (IlUInt indexMin, IlUInt indexMax, IlUInt &count) const
	Returns some of the data points represented by the current data set. More...

void	getValue (IlUInt i, IlDouble &yValue) const
	Returns a data value. More...

virtual IlBoolean	insertPoint (const IlvDoublePoint &point, IlUInt ptidx, IlvChartDataPointInfo *pointInfo=0, IlBoolean copyPointInfo=IlFalse)
	Inserts a represented data point (and its associated point information object if any). More...

IlBoolean	insertValue (IlDouble yValue, IlUInt valueIndex, IlvChartDataPointInfo *pointInfo=0, IlBoolean copyPointInfo=IlFalse)
	Inserts a data value (and its associated point information object if any). More...

IlBoolean	insertValues (IlUInt count, const IlDouble yValues, IlUInt position=IlvLastPositionIndex, IlvChartDataPointInfo const *pInfos=0, IlBoolean copyPointInfo=IlFalse)
	Inserts several values (and their associated point information objects if any). More...

virtual IlBoolean	isIncreasingOnX () const
	Indicates whether the managed data has increasing abscissa values. More...

virtual IlBoolean	removePointAndInfo (IlUInt ptidx)
	Removes a represented data point (and its associated point information if any). More...

virtual void	removePointsAndInfo ()
	Removes all the represented data points (and their associated point information objects if any). More...

IlBoolean	removeValueAndInfo (IlUInt valueIndex)
	Removes a data value (and their associated point information objects if any). More...

virtual void	removeValuesAndInfo ()
	Removes all the data values (and their associated point information objects if any). More...

virtual IlBoolean	setPoint (IlUInt ptidx, const IlvDoublePoint &point)
	Sets a represented data point. More...

IlBoolean	setValue (IlUInt valueIndex, IlDouble yValue)
	Sets a data value. More...

Public Member Functions inherited from IlvChartDataSet
virtual	~IlvChartDataSet ()
	Destructor. More...

void	addListener (IlvChartDataSetListener *listener)
	Adds a listener. More...

IlBoolean	addPoint (const IlvDoublePoint &point, IlvChartDataPointInfo *pointInfo=0, IlBoolean copyPointInfo=IlFalse)
	Adds a represented data point (and its associated point information object if any). More...

IlBoolean	areListenersEnabled () const
	Indicates whether the listeners are enabled. More...

virtual IlvChartDataSet *	copy () const =0
	Virtual copy constructor. More...

virtual void	dataAllPointsRemoved ()
	Performs the necessary updates when all data points are removed. More...

virtual void	dataPointAdded (IlUInt position)
	Performs the necessary updates when a new data point is added. More...

virtual void	dataPointChanged (IlUInt ptidx, IlBoolean beforeChange)
	Performs the necessary updates when a data point is changed. More...

virtual void	dataPointRemoved (IlUInt ptidx)
	Performs the necessary updates when a data point is removed. More...

void	enableListeners (IlBoolean b)
	Specifies whether the listeners should be enabled. More...

virtual void	endBatch ()
	Specifies the end of a set of modifications. More...

IlUInt	getAddMaxIdx () const
	Returns the maximum index of the data points that have been added between the first call of the `startBatch()` method and the last call of the `endBatch()` method. More...

IlUInt	getAddMinIdx () const
	Returns the minimum index of the data points that have been added between the first call of the `startBatch()` method and the last call of the `endBatch()` method. More...

void	getBoundingValues (IlvCoordInterval &xRange, IlvCoordInterval &yRange) const
	Returns the bounding values of the managed data. More...

IlvChartDataSetListener const	getListeners (IlUInt &count) const
	Returns all the listeners. More...

IlUInt	getMaxCount () const
	Returns the maximum number of data items that can be managed. More...

const char *	getName () const
	Returns the name of the current data set. More...

IlvChartDataPointInfo *	getPointInfo (IlUInt ptidx) const
	Returns the point information associated with a data item. More...

IlvPointInfoCollection *	getPointInfoCollection () const
	Returns the object used to manage the point information. More...

IlUInt	getPointInfoCount () const
	Returns the number of defined point information items. More...

IlvDoublePoint *	getPoints (IlUInt &count) const
	Returns all the represented data points. More...

virtual IlvDoublePoint *	getPointsInRange (IlUInt &count, IlUInt *&dataPointIndexes, const IlvCoordInterval &xRange, const IlvCoordInterval &yRange, IlBoolean needContinuity) const
	Returns a range of data points represented by the current data set. More...

virtual const IlvCoordInterval &	getXRange () const
	Returns the abscissa bounding values of the managed data. More...

virtual const IlvCoordInterval &	getYRange () const
	Returns the ordinate bounding values of the managed data. More...

virtual IlBoolean	insertPoints (IlUInt count, const IlvDoublePoint points, IlUInt position=IlvLastPositionIndex, IlvChartDataPointInfo const *pInfos=0, IlBoolean copyPointInfo=IlFalse)
	Inserts several represented data points (and their associated point information objects if any). More...

IlBoolean	isLimited () const
	Indicates whether the number of managed data items is limited. More...

virtual IlBoolean	isRemovalAllowed () const
	Indicates whether managed data can be removed. More...

virtual IlBoolean	isWritable () const
	Indicates whether managed data can be modified. More...

void	lock ()
	Locks the current `IlvChartDataSet` object. More...

void	removeAllPointInfo ()
	Removes all the defined point information. More...

virtual void	removeAllPoints ()
	Removes all the represented data points (and their associated point information objects if any). More...

IlvChartDataSetListener *	removeListener (IlvChartDataSetListener *l)
	Removes a listener. More...

void	removeListeners ()
	Removes all the listeners.

IlBoolean	removePointInfo (IlUInt ptidx)
	Removes the point information associated with a data item. More...

IlvOutputFile &	save (IlvOutputFile &file) const
	Writes a complete description of the current object in a file. More...

void	setMaxCount (IlUInt maxCount)
	Sets the maximum number of managed data items. More...

void	setName (const char *name)
	Sets the name of the current data set. More...

IlBoolean	setPointInfo (IlUInt ptidx, IlvChartDataPointInfo *pointInfo, IlBoolean copyPointInfo=IlFalse)
	Sets the point information associated with a data item. More...

void	setPointInfoCollection (IlvPointInfoCollection *ptic)
	Sets the object used to manage the point information. More...

virtual void	startBatch ()
	Specifies the beginning of a set of modifications. More...

void	unLock ()
	Unlocks the current `IlvChartDataSet` object. More...

virtual void	write (IlvOutputFile &file) const
	Writes the attributes of the current object in a file. More...

Protected Member Functions
virtual void	computeMinMaxValues (IlvCoordInterval &xRange, IlvCoordInterval &yRange) const
	Computes the abscissa and ordinate bounding values of the managed data. More...

void	updateBoundingValues (IlDouble newYValue)
	Updates the bounding values of the managed data. More...

Protected Member Functions inherited from IlvChartDataSet
	IlvChartDataSet (const char name=0, IlvPointInfoCollection pointInfoCollection=0)
	Constructor. More...

	IlvChartDataSet (const IlvChartDataSet &dataSet)
	Constructor. More...

	IlvChartDataSet (IlvInputFile &file)
	Constructor. More...

void	computeBoundingValues ()
	Computes the bounding values of the managed data. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvChartDataSet
static IlvChartDataSet *	Load (IlvInputFile &file)
	Reads a data set object from a file. More...

Detailed Description

Class for data sets described by a set of values.

Library: ilvcharts

This class is a subclass of IlvChartDataSet in which the data points are described by values of type IlDouble stored in an array. These values correspond to the ordinates of the data points. The abscissa of the data points are by definition the indexes of the stored data values.

Example of data that can be represented by an IlvChartYValueSet object:

X	Y
0	1.2
1	3.1
2	4.6

Note: Each Y value is stored by using an IlDouble instance within the IlvChartYValueSet object. The X values are not stored, they correspond to the indexes of the stored Y values.

See Also: IlvChartDataSet, IlvPointInfoCollection, IlvChartDataPointInfo.

Constructor & Destructor Documentation

IlvChartYValueSet::IlvChartYValueSet	(	const char *	name = `0`,
		IlvPointInfoCollection *	pointInfoCollection = `0`
	)

Constructor.

Initializes a new IlvChartYValueSet object.

Parameters

name	If not `0`, this string becomes the name of the created data set. The name passed as a parameter is copied.
pointInfoCollection	The object used to manage the point information for the created data set.

virtual IlvChartYValueSet::~IlvChartYValueSet ( )

virtual

Destructor.

The destructor removes all the data values managed by the current data set if the removal is allowed (see the IlvChartDataSet::isRemovalAllowed() method).

Member Function Documentation

IlBoolean IlvChartYValueSet::addValue	(	IlDouble	yValue,
		IlvChartDataPointInfo *	pointInfo = `0`,
		IlBoolean	copyPointInfo = `IlFalse`
	)

Adds a data value (and its associated point information object if any).

Parameters

yValue	The new data value to add.
pointInfo	The point information associated with the new data value. This point information is locked.
copyPointInfo	Indicates whether the point information passed as a parameter must be copied. If copyPointInfo is `IlTrue`, the point information is copied. Otherwise, a pointer to the point information stored in pointInfo is kept and so its contents should not be deleted.

Returns: IlTrue if the value and its associated point information have been successfully added and IlFalse otherwise.

Note: The IlvChartDataSet::dataPointAdded() method is called within this method after adding the value in order to perform the updates needed because of the change to the data set.

virtual void IlvChartYValueSet::computeMinMaxValues	(	IlvCoordInterval &	xRange,
		IlvCoordInterval &	yRange
	)		const

protectedvirtual

Computes the abscissa and ordinate bounding values of the managed data.

Computes and returns in xRange and yRange the abscissa and ordinate bounding values of the data managed by the current data set.

Parameters

xRange	The bounding values for the abscissa of the data managed by the current data set.
yRange	The bounding values for the ordinate of the data managed by the current data set.

Note: This method is called in the IlvChartDataSet::computeBoundingValues() method.

Reimplemented from IlvChartDataSet.

virtual IlUInt IlvChartYValueSet::getDataCount ( ) const

virtual

Returns the number of defined data items.

Returns: The number of data items (points or values) defined for the data set.

Implements IlvChartDataSet.

virtual void IlvChartYValueSet::getPoint	(	IlUInt	i,
		IlvDoublePoint &	point
	)		const

virtual

Returns a represented data point.

Returns in point the point corresponding to the data value of index i for the current data set. The ordinate of point corresponds to the data value of index i stored in the data set. The abscissa of point corresponds to i which is the index of the data value.

Parameters

i	The index of the returned data point.
point	The returned data point.

Implements IlvChartDataSet.

virtual IlvDoublePoint* IlvChartYValueSet::getPointsBetween	(	IlUInt	indexMin,
		IlUInt	indexMax,
		IlUInt &	count
	)		const

virtual

Returns some of the data points represented by the current data set.

Parameters

indexMin	The index of the first returned data point.
indexMax	The index of the last returned data point.
count	The number of returned points.

Returns: An array of the data points represented by the current data set that are between the indexMin and the indexMax indexes. The array is stored in an IlPoolOf(Pointer) and should not be deleted or modified.

Reimplemented from IlvChartDataSet.

void IlvChartYValueSet::getValue	(	IlUInt	i,
		IlDouble &	yValue
	)		const

Returns a data value.

Parameters

i	The index of the returned data value.
yValue	The returned data value.

virtual IlBoolean IlvChartYValueSet::insertPoint	(	const IlvDoublePoint &	point,
		IlUInt	ptidx,
		IlvChartDataPointInfo *	pointInfo = `0`,
		IlBoolean	copyPointInfo = `IlFalse`
	)

virtual

Inserts a represented data point (and its associated point information object if any).

Inserts the ordinate of the point stored in point and its associated point information (if any) at the index ptidx of the data set. Only the ordinate of point is considered since the current data set stores only the ordinate (commonly called Y) values.

Parameters

point	The new data point to insert.
ptidx	The index at which the new data point must be inserted.
pointInfo	The point information associated with the new data point. This point information is locked.
copyPointInfo	Indicates whether the point information passed as a parameter must be copied. If copyPointInfo is `IlTrue`, the point information is copied. Otherwise, a pointer to the point information stored in pointInfo is kept and so its contents should not be deleted.

Returns: IlTrue if the value and its associated point information have been successfully inserted and IlFalse otherwise.

Note: The IlvChartDataSet::dataPointAdded() method is called within this method after inserting the value in order to perform the updates needed because of the change to the data set.

Warning: Before you insert the point information object associated with a data item of the current data set, you must set the object used to manage the point information objects for the current data set. (See the IlvChartDataSet::setPointInfoCollection() method or the constructor IlvChartDataSet::IlvChartDataSet(const char*, IlvPointInfoCollection*).)

Reimplemented from IlvChartDataSet.

IlBoolean IlvChartYValueSet::insertValue	(	IlDouble	yValue,
		IlUInt	valueIndex,
		IlvChartDataPointInfo *	pointInfo = `0`,
		IlBoolean	copyPointInfo = `IlFalse`
	)

Inserts a data value (and its associated point information object if any).

Parameters

yValue	The new data value to insert.
valueIndex	The index at which the new data value must be inserted.
pointInfo	The point information associated with the new data value. This point information is locked.
copyPointInfo	Indicates whether the point information passed as a parameter must be copied. If copyPointInfo is `IlTrue`, the point information is copied. Otherwise, a pointer to the point information stored in pointInfo is kept and so its contents should not be deleted.

Returns: IlTrue if the value and its associated point information have been successfully inserted and IlFalse otherwise.

Note: The IlvChartDataSet::dataPointAdded() method is called within this method after inserting the value in order to perform the updates needed because of the change to the data set.

IlBoolean IlvChartYValueSet::insertValues	(	IlUInt	count,
		const IlDouble *	yValues,
		IlUInt	position = `IlvLastPositionIndex`,
		IlvChartDataPointInfo const	pInfos = `0`,
		IlBoolean	copyPointInfo = `IlFalse`
	)

Inserts several values (and their associated point information objects if any).

Inserts an array of values in the data set. This method uses the IlvChartDataSet::startBatch() and IlvChartDataSet::endBatch() methods to ensure that a single notification is sent.

Parameters

count	The number of values.
yValues	The values to insert.
position	The index at which the new values are inserted.
pInfos	The information associated with the new values.
copyPointInfo	A Boolean value indicating whether the point information stored in pInfos must be copied.

Returns: A Boolean value indicating whether the values were successfully inserted.

virtual IlBoolean IlvChartYValueSet::isIncreasingOnX ( ) const

virtual

Indicates whether the managed data has increasing abscissa values.

Returns: IlTrue by default. The data has an abscissa that increases or stays the same by definition since the data abscissa correspond to the indexes of the values stored in the current data set.

Reimplemented from IlvChartDataSet.

virtual IlBoolean IlvChartYValueSet::removePointAndInfo ( IlUInt ptidx )

virtual

Removes a represented data point (and its associated point information if any).

When you remove a point information object, the point information is not deleted but is unlocked (that is, the IlvChartDataPointInfo::unLock() method is called). It will be deleted only when no objects reference it (see the IlvChartDataPointInfo::unLock() method).

Parameters

ptidx The index of the data value and of its associated point information (if any) that are removed.

Returns: IlTrue if the value and its associated point information (if any) have been removed and IlFalse otherwise.

Note: The IlvChartDataSet::dataPointRemoved() method is called within this method after removing the value in order to perform the updates needed because of the change to the data set.

Reimplemented from IlvChartDataSet.

virtual void IlvChartYValueSet::removePointsAndInfo ( )

virtual

Removes all the represented data points (and their associated point information objects if any).

Note: When you remove a point information object, the point information is not deleted but is unlocked (that is, the IlvChartDataPointInfo::unLock() method is called): it will be deleted only when no objects reference it.

Reimplemented from IlvChartDataSet.

IlBoolean IlvChartYValueSet::removeValueAndInfo ( IlUInt valueIndex )

Removes a data value (and their associated point information objects if any).

When you remove a point information object, the point information is not deleted but unlocked (that is, the IlvChartDataPointInfo::unLock() method is called). It will be deleted only when no objects reference it (see the IlvChartDataPointInfo::unLock() method).

Parameters

valueIndex The index of the data value and of its associated point information (if any) that are removed.

Returns: IlTrue if the value and its associated point information (if any) have been removed and IlFalse otherwise.

Note: The IlvChartDataSet::dataPointRemoved() method is called within this method after removing the value in order to perform the updates needed because of the change to the data set.

virtual void IlvChartYValueSet::removeValuesAndInfo ( )

virtual

Removes all the data values (and their associated point information objects if any).

Note: When you remove a point information object, the point information is not deleted but unlocked (that is, the IlvChartDataPointInfo::unLock() method is called). It will be deleted only when no objects reference it.

virtual IlBoolean IlvChartYValueSet::setPoint	(	IlUInt	ptidx,
		const IlvDoublePoint &	point
	)

virtual

Sets a represented data point.

Sets the ordinate of the point stored in point at the index ptidx for the data set. Only the ordinate of point is considered, since the current data set stores only the ordinate (commonly called Y) values.

If a value already exists at this index, it is replaced by the new one. Otherwise, the value is added at the end.

Parameters

ptidx	The index at which the new data point must be set.
point	The new data point to set.

Returns: IlTrue if the value has been successfully set and IlFalse otherwise.

Note: If a value already exists at the index ptidx, the IlvChartDataSet::dataPointChanged() method is called within this method before and after changing the value in order to perform the updates needed because of the change to the data set.

Reimplemented from IlvChartDataSet.

IlBoolean IlvChartYValueSet::setValue	(	IlUInt	valueIndex,
		IlDouble	yValue
	)

Sets a data value.

If a value already exists at the index valueIndex, it is replaced by the new one. Otherwise, the value is added at the end.

Parameters

valueIndex	The index at which the new data value must be set.
yValue	The new data value to set.

Returns: IlTrue if the value has been successfully set and IlFalse otherwise.

Note: If a value already exists at the index, the IlvChartDataSet::dataPointChanged() method is called within this method before and after changing the value in order to perform the updates needed because of the change to the data set.

void IlvChartYValueSet::updateBoundingValues ( IlDouble newYValue )

protected

Updates the bounding values of the managed data.

Updates the minimum and maximum values of the abscissa and the ordinate for the data managed by the current data set, by taking into account a new data value that has been added.

Parameters

newYValue The new value that has been added to the data set.

Note: This method is called when the bounding values have already been computed by using the IlvChartDataSet::computeBoundingValues() method and only need to be updated in order to take into account a new added data value.

Rogue Wave ViewsCharts Package API Reference Guide

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Rogue Wave Views
Charts Package API Reference Guide