QwtCPointerValueData< T > Class Template Reference

Data class containing a pointer to memory of y coordinates. More...

#include <qwt_point_data.h>

Inheritance diagram for QwtCPointerValueData< T >:

Public Member Functions
	QwtCPointerValueData (const T *y, size_t size)
virtual size_t	size () const override
virtual QPointF	sample (size_t index) const override
const T *	yData () const
Public Member Functions inherited from QwtPointSeriesData
	QwtPointSeriesData (const QVector< QPointF > &=QVector< QPointF >())
virtual QRectF	boundingRect () const override
	Calculate the bounding rectangle. More...
Public Member Functions inherited from QwtArraySeriesData< QPointF >
	QwtArraySeriesData ()
	Constructor.
	QwtArraySeriesData (const QVector< QPointF > &samples)
void	setSamples (const QVector< QPointF > &samples)
const QVector< QPointF >	samples () const
Public Member Functions inherited from QwtSeriesData< QPointF >
	QwtSeriesData ()
	Constructor.
virtual	~QwtSeriesData ()
	Destructor.
virtual void	setRectOfInterest (const QRectF &rect)

Additional Inherited Members
Protected Attributes inherited from QwtArraySeriesData< QPointF >
QVector< QPointF >	m_samples
	Vector of samples.
Protected Attributes inherited from QwtSeriesData< QPointF >
QRectF	cachedBoundingRect
	Can be used to cache a calculated bounding rectangle.

Detailed Description

template<typename T>
class QwtCPointerValueData< T >

Data class containing a pointer to memory of y coordinates.

The memory contains the y coordinates, while the index is interpreted as x coordinate.

Definition at line 89 of file qwt_point_data.h.

Constructor & Destructor Documentation

QwtCPointerValueData()

template<typename T >

QwtCPointerValueData< T >::QwtCPointerValueData	(	const T *	y,
		size_t	size
	)

Constructor

Parameters

y	Array of y values
size	Size of the x and y arrays

Warning

The programmer must assure that the memory blocks referenced by the pointers remain valid during the lifetime of the QwtCPointerValueData object.

See also

QwtPlotCurve::setData(), QwtPlotCurve::setRawSamples()

Definition at line 380 of file qwt_point_data.h.

Member Function Documentation

sample()

template<typename T >

QPointF QwtCPointerValueData< T >::sample ( size_t  index ) const

overridevirtual

Return the sample at position i

Parameters

index

Index

Returns

Sample at position i

Reimplemented from QwtArraySeriesData< QPointF >.

Definition at line 400 of file qwt_point_data.h.

size()

template<typename T >

size_t QwtCPointerValueData< T >::size

overridevirtual

Returns

Size of the data set

Reimplemented from QwtArraySeriesData< QPointF >.

Definition at line 388 of file qwt_point_data.h.

yData()

template<typename T >

const T * QwtCPointerValueData< T >::yData

Returns

Array of the y-values

Definition at line 407 of file qwt_point_data.h.