QwtCPointerData Class Reference

#include <qwt_data.h>

Inheritance diagram for QwtCPointerData:

List of all members.

Public Member Functions
	QwtCPointerData (const double *x, const double *y, size_t size)
virtual QwtDoubleRect	boundingRect () const
virtual QwtData *	copy () const
QwtCPointerData &	operator= (const QwtCPointerData &)
virtual size_t	size () const
virtual double	x (size_t i) const
const double *	xData () const
virtual double	y (size_t i) const
const double *	yData () const
Public Member Functions inherited from QwtData
	QwtData ()
virtual	~QwtData ()

Additional Inherited Members
Protected Member Functions inherited from QwtData
QwtData &	operator= (const QwtData &)

---

Detailed Description

Data class containing two pointers to memory blocks of doubles.

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Constructor & Destructor Documentation

QwtCPointerData::QwtCPointerData	(	const double *	x,
		const double *	y,
		size_t	size
	)

Constructor

Parameters:

x	Array of x values
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 QwtPlotCPointer object.

See also:

QwtPlotCurve::setData(), QwtPlotCurve::setRawData()

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Member Function Documentation

QwtDoubleRect QwtCPointerData::boundingRect ( ) const

virtual

Returns the bounding rectangle of the data. If there is no bounding rect, like for empty data the rectangle is invalid: QwtDoubleRect::isValid() == false

Reimplemented from QwtData.

QwtData * QwtCPointerData::copy ( ) const

virtual

Returns:

Pointer to a copy (virtual copy constructor)

Implements QwtData.

size_t QwtCPointerData::size ( ) const

virtual

Returns:

Size of the data set

Implements QwtData.

double QwtCPointerData::x ( size_t  i ) const

virtual

Return the x value of data point i

Parameters:

i

Index

Returns:

x X value of data point i

Implements QwtData.

const double * QwtCPointerData::xData

(

)

const

Returns:

Array of the x-values

double QwtCPointerData::y ( size_t  i ) const

virtual

Return the y value of data point i

Parameters:

i

Index

Returns:

y Y value of data point i

Implements QwtData.

const double * QwtCPointerData::yData

(

)

const

Returns:

Array of the y-values