Qwt User's Guide 5.2.2
Public Member Functions

QwtIntervalData Class Reference

Series of samples of a value and an interval. More...

#include <qwt_interval_data.h>

List of all members.

Public Member Functions

QwtDoubleRect boundingRect () const
const QwtDoubleIntervalinterval (size_t i) const
 QwtIntervalData (const QwtArray< QwtDoubleInterval > &, const QwtArray< double > &)
 QwtIntervalData ()
void setData (const QwtArray< QwtDoubleInterval > &, const QwtArray< double > &)
size_t size () const
double value (size_t i) const
 ~QwtIntervalData ()

Detailed Description

Series of samples of a value and an interval.

QwtIntervalData is a series of samples of a value and an interval. F.e. error bars are built from samples [x, y1-y2], while a histogram might consist of [x1-x2, y] samples.


Constructor & Destructor Documentation

QwtIntervalData::QwtIntervalData ( )

Constructor.

QwtIntervalData::QwtIntervalData ( const QwtArray< QwtDoubleInterval > &  intervals,
const QwtArray< double > &  values 
)

Constructor.

QwtIntervalData::~QwtIntervalData ( )

Destructor.


Member Function Documentation

QwtDoubleRect QwtIntervalData::boundingRect ( ) const

Calculate the bounding rectangle of the samples

The x coordinates of the rectangle are built from the intervals, the y coordinates from the values.

Returns:
Bounding rectangle
const QwtDoubleInterval & QwtIntervalData::interval ( size_t  i) const [inline]

Interval of a sample

Parameters:
iSample index
Returns:
Interval
See also:
value(), size()
void QwtIntervalData::setData ( const QwtArray< QwtDoubleInterval > &  intervals,
const QwtArray< double > &  values 
)

Assign samples.

size_t QwtIntervalData::size ( ) const [inline]
Returns:
Number of samples
double QwtIntervalData::value ( size_t  i) const [inline]

Value of a sample

Parameters:
iSample index
Returns:
Value
See also:
interval(), size()