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QwtPointArrayData(3) Qwt User's Guide QwtPointArrayData(3)

NAME

QwtPointArrayData -
Interface for iterating over two QVector<double> objects.
 

SYNOPSIS

#include <qwt_series_data.h>
Inherits QwtSeriesData< QPointF >.

Public Member Functions


QwtPointArrayData (const QVector< double > &x, const QVector< double > &y)
 
QwtPointArrayData (const double *x, const double *y, size_t size)
 
virtual QRectF boundingRect () const
 
virtual size_t size () const
 
virtual QPointF sample (size_t i) const
 
const QVector< double > & xData () const
 
const QVector< double > & yData () const
 

Detailed Description

Interface for iterating over two QVector<double> objects.

Constructor & Destructor Documentation

QwtPointArrayData::QwtPointArrayData (const QVector< double > &x, const QVector< double > &y) Constructor

Parameters:
x Array of x values
 
y Array of y values
See also:
QwtPlotCurve::setData(), QwtPlotCurve::setSamples()
 

QwtPointArrayData::QwtPointArrayData (const double *x, const double *y, size_tsize) Constructor

Parameters:
x Array of x values
 
y Array of y values
 
size Size of the x and y arrays
See also:
QwtPlotCurve::setData(), QwtPlotCurve::setSamples()
 

Member Function Documentation

QRectF QwtPointArrayData::boundingRect () const [virtual]

Calculate the bounding rect. The bounding rectangle is calculated once by iterating over all points and is stored for all following requests.
Returns:
Bounding rectangle
 
Implements QwtSeriesData< QPointF >.

QPointF QwtPointArrayData::sample (size_ti) const [virtual] Return the sample at position i

Parameters:
i Index
Returns:
Sample at position i
 
Implements QwtSeriesData< QPointF >.

size_t QwtPointArrayData::size () const [virtual] Returns:

Size of the data set
 
Implements QwtSeriesData< QPointF >.

const QVector< double > & QwtPointArrayData::xData () const Returns:

Array of the x-values
 

const QVector< double > & QwtPointArrayData::yData () const Returns:

Array of the y-values
 
 

Author

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Fri Apr 15 2011 Version 6.0.0