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QwtCPointerData
Langue: en
Version: 382186 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- 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
- QwtData * QwtCPointerData::copy () const [virtual]Returns:
- QwtCPointerData & QwtCPointerData::operator= (const QwtCPointerData & data)
- size_t QwtCPointerData::size () const [virtual]Returns:
- double QwtCPointerData::x (size_t i) const [virtual]Return the x value of data point i
- const double * QwtCPointerData::xData () constReturns:
- double QwtCPointerData::y (size_t i) const [virtual]Return the y value of data point i
- const double * QwtCPointerData::yData () constReturns:
- Author
NAME
QwtCPointerData -Data class containing two pointers to memory blocks of doubles.
SYNOPSIS
#include <qwt_data.h>
Inherits QwtData.
Public Member Functions
QwtCPointerData (const double *x, const double *y, size_t size)
QwtCPointerData & operator= (const QwtCPointerData &)
virtual QwtData * copy () const
virtual size_t size () const
virtual double x (size_t i) const
virtual double y (size_t i) const
const double * xData () const
const double * yData () const
virtual QwtDoubleRect boundingRect () const
Detailed Description
Data class containing two pointers to memory blocks of doubles.
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()
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.
QwtCPointerData & QwtCPointerData::operator= (const QwtCPointerData & data)
Assignment.
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 () constReturns:
- 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 () constReturns:
- Array of the y-values
Author
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