#include "qwt_global.h"
#include "qwt_samples.h"
#include "qwt_point_3d.h"
#include <qvector.h>
#include <qrect.h>

Include dependency graph for qwt_series_data.h:

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Classes
class	QwtArraySeriesData< T >
	Template class for data, that is organized as QVector. More...

class	QwtIntervalSeriesData
	Interface for iterating over an array of intervals. More...

class	QwtPoint3DSeriesData
	Interface for iterating over an array of 3D points. More...

class	QwtPointSeriesData
	Interface for iterating over an array of points. More...

class	QwtSeriesData< T >
	Abstract interface for iterating over samples. More...

class	QwtSetSeriesData
	Interface for iterating over an array of samples. More...

class	QwtTradingChartData

class	QwtVectorFieldData

Functions
QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QPointF > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtPoint3D > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtPointPolar > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtIntervalSample > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtSetSample > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtOHLCSample > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

QWT_EXPORT QRectF	qwtBoundingRect (const QwtSeriesData< QwtVectorFieldSample > &, int from=0, int to=-1)
	Calculate the bounding rectangle of a series subset. More...

template<typename T , typename LessThan >
int	qwtUpperSampleIndex (const QwtSeriesData< T > &series, double value, LessThan lessThan)

Function Documentation

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QPointF > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 137 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtPoint3D > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 154 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtPointPolar > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

The horizontal coordinates represent the azimuth, the vertical coordinates the radius.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 174 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtIntervalSample > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 191 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtSetSample > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 225 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtOHLCSample > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 208 of file qwt_series_data.cpp.

QWT_EXPORT QRectF qwtBoundingRect	(	const QwtSeriesData< QwtVectorFieldSample > &	series,
		int	from,
		int	to
	)

Calculate the bounding rectangle of a series subset.

Slow implementation, that iterates over the series.

Parameters

series	Series
from	Index of the first sample, <= 0 means from the beginning
to	Index of the last sample, < 0 means to the end

Returns: Bounding rectangle

Definition at line 242 of file qwt_series_data.cpp.

template<typename T , typename LessThan >

int qwtUpperSampleIndex	(	const QwtSeriesData< T > &	series,
		double	value,
		LessThan	lessThan
	)

inline

Binary search for a sorted series of samples

qwtUpperSampleIndex returns the index of sample that is the upper bound of value. Is the the value smaller than the smallest value the return value will be 0. Is the value greater or equal than the largest value the return value will be -1.

Example: The following example shows finds a point of curve from an x coordinate
1 #include <qwt_series_data.h>
2 #include <qwt_plot_curve.h>
3
4 struct compareX
5 {
6 inline bool operator()( const double x, const QPointF &pos ) const
7 {
8 return ( x < pos.x() );
9 }
10 };
11
12 QLineF curveLineAt( const QwtPlotCurve *curve, double x )
13 {
14 int index = qwtUpperSampleIndex<QPointF>(
15 *curve->data(), x, compareX() );
16
17 if ( index == -1 &&
18 x == curve->sample( curve->dataSize() - 1 ).x() )
19 {
20 // the last sample is excluded from qwtUpperSampleIndex
21 index = curve->dataSize() - 1;
22 }
23
24 QLineF line; // invalid
25 if ( index > 0 )
26 {
27 line.setP1( curve->sample( index - 1 ) );
28 line.setP2( curve->sample( index ) );
29 }
30
31 return line;
32 }

Parameters

series	Series of samples
value	Value
lessThan	Compare operation

Note: The samples must be sorted according to the order specified by the lessThan object

Definition at line 350 of file qwt_series_data.h.

Classes

Functions

Function Documentation