QwtIntervalData (3) Linux Manual Page

QwtIntervalData – Series of samples of a value and an interval.

Synopsis

#include <qwt_interval_data.h>

Public Member Functions

QwtIntervalData ()

QwtIntervalData (const QwtArray< QwtDoubleInterval > &, const QwtArray< double > &)

~QwtIntervalData ()

void setData (const QwtArray< QwtDoubleInterval > &, const QwtArray< double > &)

size_t size () const

const QwtDoubleInterval & interval (size_t i) const

double value (size_t i) const

QwtDoubleRect boundingRect () const

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:

i Sample 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:

i Sample index

Returns:

Value

See also:

interval(), size()

Author

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