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

NAME

QwtIntervalData -

SYNOPSIS

#include <qwt_interval_data.h>

Public Member Functions


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

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_ti) const [inline]

Interval of a sample

Parameters:

i Sample index

Returns:

Interval

See also:

value(), size()

size_t QwtIntervalData::size () const [inline]

Returns:

Number of samples

double QwtIntervalData::value (size_ti) const [inline]

Value of a sample

Parameters:

i Sample index

Returns:

Value

See also:

interval(), size()

Author

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Tue Nov 20 2012 Version 5.2.3