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QCPFinancial Class Reference

A plottable representing a financial stock chart. More...

Inheritance diagram for QCPFinancial:
Inheritance graph

Public Types

enum  WidthType
 
enum  ChartStyle
 

Public Functions

 QCPFinancial (QCPAxis *keyAxis, QCPAxis *valueAxis)
 
QSharedPointer< QCPFinancialDataContainerdata () const
 
ChartStyle chartStyle () const
 
double width () const
 
WidthType widthType () const
 
bool twoColored () const
 
QBrush brushPositive () const
 
QBrush brushNegative () const
 
QPen penPositive () const
 
QPen penNegative () const
 
void setData (QSharedPointer< QCPFinancialDataContainer > data)
 
void setData (const QVector< double > &keys, const QVector< double > &open, const QVector< double > &high, const QVector< double > &low, const QVector< double > &close, bool alreadySorted=false)
 
void setChartStyle (ChartStyle style)
 
void setWidth (double width)
 
void setWidthType (WidthType widthType)
 
void setTwoColored (bool twoColored)
 
void setBrushPositive (const QBrush &brush)
 
void setBrushNegative (const QBrush &brush)
 
void setPenPositive (const QPen &pen)
 
void setPenNegative (const QPen &pen)
 
void addData (const QVector< double > &keys, const QVector< double > &open, const QVector< double > &high, const QVector< double > &low, const QVector< double > &close, bool alreadySorted=false)
 
void addData (double key, double open, double high, double low, double close)
 
virtual QCPDataSelection selectTestRect (const QRectF &rect, bool onlySelectable) const
 
virtual double selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const
 
virtual QCPRange getKeyRange (bool &foundRange, QCP::SignDomain inSignDomain=QCP::sdBoth) const
 
virtual QCPRange getValueRange (bool &foundRange, QCP::SignDomain inSignDomain=QCP::sdBoth, const QCPRange &inKeyRange=QCPRange()) const
 
- Public Functions inherited from QCPAbstractPlottable1D< QCPFinancialData >
 QCPAbstractPlottable1D (QCPAxis *keyAxis, QCPAxis *valueAxis)
 
virtual int dataCount () const
 
virtual double dataMainKey (int index) const
 
virtual double dataSortKey (int index) const
 
virtual double dataMainValue (int index) const
 
virtual QCPRange dataValueRange (int index) const
 
virtual QPointF dataPixelPosition (int index) const
 
virtual bool sortKeyIsMainKey () const
 
virtual int findBegin (double sortKey, bool expandedRange=true) const
 
virtual int findEnd (double sortKey, bool expandedRange=true) const
 
virtual QCPPlottableInterface1Dinterface1D ()
 
- Public Functions inherited from QCPAbstractPlottable
 QCPAbstractPlottable (QCPAxis *keyAxis, QCPAxis *valueAxis)
 
QString name () const
 
bool antialiasedFill () const
 
bool antialiasedScatters () const
 
QPen pen () const
 
QBrush brush () const
 
QCPAxiskeyAxis () const
 
QCPAxisvalueAxis () const
 
QCP::SelectionType selectable () const
 
bool selected () const
 
QCPDataSelection selection () const
 
QCPSelectionDecoratorselectionDecorator () const
 
void setName (const QString &name)
 
void setAntialiasedFill (bool enabled)
 
void setAntialiasedScatters (bool enabled)
 
void setPen (const QPen &pen)
 
void setBrush (const QBrush &brush)
 
void setKeyAxis (QCPAxis *axis)
 
void setValueAxis (QCPAxis *axis)
 
Q_SLOT void setSelectable (QCP::SelectionType selectable)
 
Q_SLOT void setSelection (QCPDataSelection selection)
 
void setSelectionDecorator (QCPSelectionDecorator *decorator)
 
void coordsToPixels (double key, double value, double &x, double &y) const
 
const QPointF coordsToPixels (double key, double value) const
 
void pixelsToCoords (double x, double y, double &key, double &value) const
 
void pixelsToCoords (const QPointF &pixelPos, double &key, double &value) const
 
void rescaleAxes (bool onlyEnlarge=false) const
 
void rescaleKeyAxis (bool onlyEnlarge=false) const
 
void rescaleValueAxis (bool onlyEnlarge=false, bool inKeyRange=false) const
 
bool addToLegend (QCPLegend *legend)
 
bool addToLegend ()
 
bool removeFromLegend (QCPLegend *legend) const
 
bool removeFromLegend () const
 
- Public Functions inherited from QCPLayerable
 QCPLayerable (QCustomPlot *plot, QString targetLayer=QString(), QCPLayerable *parentLayerable=0)
 
bool visible () const
 
QCustomPlotparentPlot () const
 
QCPLayerableparentLayerable () const
 
QCPLayerlayer () const
 
bool antialiased () const
 
void setVisible (bool on)
 
Q_SLOT bool setLayer (QCPLayer *layer)
 
bool setLayer (const QString &layerName)
 
void setAntialiased (bool enabled)
 
bool realVisibility () const
 

Static Public Functions

static QCPFinancialDataContainer timeSeriesToOhlc (const QVector< double > &time, const QVector< double > &value, double timeBinSize, double timeBinOffset=0)
 

Protected Functions

virtual void draw (QCPPainter *painter)
 
virtual void drawLegendIcon (QCPPainter *painter, const QRectF &rect) const
 
void drawOhlcPlot (QCPPainter *painter, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, bool isSelected)
 
void drawCandlestickPlot (QCPPainter *painter, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, bool isSelected)
 
double getPixelWidth (double key, double keyPixel) const
 
double ohlcSelectTest (const QPointF &pos, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, QCPFinancialDataContainer::const_iterator &closestDataPoint) const
 
double candlestickSelectTest (const QPointF &pos, const QCPFinancialDataContainer::const_iterator &begin, const QCPFinancialDataContainer::const_iterator &end, QCPFinancialDataContainer::const_iterator &closestDataPoint) const
 
void getVisibleDataBounds (QCPFinancialDataContainer::const_iterator &begin, QCPFinancialDataContainer::const_iterator &end) const
 
QRectF selectionHitBox (QCPFinancialDataContainer::const_iterator it) const
 
- Protected Functions inherited from QCPAbstractPlottable1D< QCPFinancialData >
void getDataSegments (QList< QCPDataRange > &selectedSegments, QList< QCPDataRange > &unselectedSegments) const
 
void drawPolyline (QCPPainter *painter, const QVector< QPointF > &lineData) const
 
- Protected Functions inherited from QCPAbstractPlottable
virtual QRect clipRect () const
 
virtual QCP::Interaction selectionCategory () const
 
void applyDefaultAntialiasingHint (QCPPainter *painter) const
 
virtual void selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged)
 
virtual void deselectEvent (bool *selectionStateChanged)
 
void applyFillAntialiasingHint (QCPPainter *painter) const
 
void applyScattersAntialiasingHint (QCPPainter *painter) const
 
- Protected Functions inherited from QCPLayerable
virtual void parentPlotInitialized (QCustomPlot *parentPlot)
 
virtual void mousePressEvent (QMouseEvent *event, const QVariant &details)
 
virtual void mouseMoveEvent (QMouseEvent *event, const QPointF &startPos)
 
virtual void mouseReleaseEvent (QMouseEvent *event, const QPointF &startPos)
 
virtual void mouseDoubleClickEvent (QMouseEvent *event, const QVariant &details)
 
virtual void wheelEvent (QWheelEvent *event)
 
void initializeParentPlot (QCustomPlot *parentPlot)
 
void setParentLayerable (QCPLayerable *parentLayerable)
 
bool moveToLayer (QCPLayer *layer, bool prepend)
 
void applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const
 

Additional Inherited Members

- Signals inherited from QCPAbstractPlottable
void selectionChanged (bool selected)
 
void selectionChanged (const QCPDataSelection &selection)
 
void selectableChanged (QCP::SelectionType selectable)
 
- Signals inherited from QCPLayerable
void layerChanged (QCPLayer *newLayer)
 

Detailed Description

A plottable representing a financial stock chart.

QCPFinancial.png

This plottable represents time series data binned to certain intervals, mainly used for stock charts. The two common representations OHLC (Open-High-Low-Close) bars and Candlesticks can be set via setChartStyle.

The data is passed via setData as a set of open/high/low/close values at certain keys (typically times). This means the data must be already binned appropriately. If data is only available as a series of values (e.g. price against time), you can use the static convenience function timeSeriesToOhlc to generate binned OHLC-data which can then be passed to setData.

The width of the OHLC bars/candlesticks can be controlled with setWidth and setWidthType. A typical choice is to set the width type to wtPlotCoords (the default) and the width to (or slightly less than) one time bin interval width.

Changing the appearance

Charts can be either single- or two-colored (setTwoColored). If set to be single-colored, lines are drawn with the plottable's pen (setPen) and fills with the brush (setBrush).

If set to two-colored, positive changes of the value during an interval (close >= open) are represented with a different pen and brush than negative changes (close < open). These can be configured with setPenPositive, setPenNegative, setBrushPositive, and setBrushNegative. In two-colored mode, the normal plottable pen/brush is ignored. Upon selection however, the normal selected pen/brush (provided by the selectionDecorator) is used, irrespective of whether the chart is single- or two-colored.

Usage

Like all data representing objects in QCustomPlot, the QCPFinancial is a plottable (QCPAbstractPlottable). So the plottable-interface of QCustomPlot applies (QCustomPlot::plottable, QCustomPlot::removePlottable, etc.)

Usually, you first create an instance:

QCPFinancial *newFinancial = new QCPFinancial(customPlot->xAxis, customPlot->yAxis);

which registers it with the QCustomPlot instance of the passed axes. Note that this QCustomPlot instance takes ownership of the plottable, so do not delete it manually but use QCustomPlot::removePlottable() instead. The newly created plottable can be modified, e.g.:

newFinancial->setName("Stock prices");
newFinancial->data()->set(QCPFinancial::timeSeriesToOhlc(time, price, 3600*24));

Here we have used the static helper method timeSeriesToOhlc, to turn a time-price data series into a 24-hour binned open-high-low-close data series as QCPFinancial uses.

Member Enumeration Documentation

§ WidthType

Defines the ways the width of the financial bar can be specified. Thus it defines what the number passed to setWidth actually means.

See also
setWidthType, setWidth
Enumerator
wtAbsolute 

width is in absolute pixels

wtAxisRectRatio 

width is given by a fraction of the axis rect size

wtPlotCoords 

width is in key coordinates and thus scales with the key axis range

§ ChartStyle

Defines the possible representations of OHLC data in the plot.

See also
setChartStyle
Enumerator
csOhlc 

Open-High-Low-Close bar representation.

csCandlestick 

Candlestick representation.

Constructor & Destructor Documentation

§ QCPFinancial()

QCPFinancial::QCPFinancial ( QCPAxis keyAxis,
QCPAxis valueAxis 
)
explicit

Constructs a financial chart which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). keyAxis and valueAxis must reside in the same QCustomPlot instance and not have the same orientation. If either of these restrictions is violated, a corresponding message is printed to the debug output (qDebug), the construction is not aborted, though.

The created QCPFinancial is automatically registered with the QCustomPlot instance inferred from keyAxis. This QCustomPlot instance takes ownership of the QCPFinancial, so do not delete it manually but use QCustomPlot::removePlottable() instead.

Member Function Documentation

§ data()

QCPFinancialDataContainer * QCPFinancial::data ( ) const
inline

Returns a pointer to the internal data storage of type QCPFinancialDataContainer. You may use it to directly manipulate the data, which may be more convenient and faster than using the regular setData or addData methods, in certain situations.

§ setData() [1/2]

void QCPFinancial::setData ( QSharedPointer< QCPFinancialDataContainer data)

This is an overloaded function.

Replaces the current data container with the provided data container.

Since a QSharedPointer is used, multiple QCPFinancials may share the same data container safely. Modifying the data in the container will then affect all financials that share the container. Sharing can be achieved by simply exchanging the data containers wrapped in shared pointers:

financial2->setData(financial1->data()); // financial1 and financial2 now share data container

If you do not wish to share containers, but create a copy from an existing container, rather use the QCPDataContainer<DataType>::set method on the financial's data container directly:

financial2->data()->set(*financial1->data()); // financial2 now has copy of financial1's data in its container
See also
addData, timeSeriesToOhlc

§ setData() [2/2]

void QCPFinancial::setData ( const QVector< double > &  keys,
const QVector< double > &  open,
const QVector< double > &  high,
const QVector< double > &  low,
const QVector< double > &  close,
bool  alreadySorted = false 
)

This is an overloaded function.

Replaces the current data with the provided points in keys, open, high, low and close. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

If you can guarantee that the passed data points are sorted by keys in ascending order, you can set alreadySorted to true, to improve performance by saving a sorting run.

See also
addData, timeSeriesToOhlc

§ setChartStyle()

void QCPFinancial::setChartStyle ( QCPFinancial::ChartStyle  style)

Sets which representation style shall be used to display the OHLC data.

§ setWidth()

void QCPFinancial::setWidth ( double  width)

Sets the width of the individual bars/candlesticks to width in plot key coordinates.

A typical choice is to set it to (or slightly less than) one bin interval width.

§ setWidthType()

void QCPFinancial::setWidthType ( QCPFinancial::WidthType  widthType)

Sets how the width of the financial bars is defined. See the documentation of WidthType for an explanation of the possible values for widthType.

The default value is wtPlotCoords.

See also
setWidth

§ setTwoColored()

void QCPFinancial::setTwoColored ( bool  twoColored)

Sets whether this chart shall contrast positive from negative trends per data point by using two separate colors to draw the respective bars/candlesticks.

If twoColored is false, the normal plottable's pen and brush are used (setPen, setBrush).

See also
setPenPositive, setPenNegative, setBrushPositive, setBrushNegative

§ setBrushPositive()

void QCPFinancial::setBrushPositive ( const QBrush &  brush)

If setTwoColored is set to true, this function controls the brush that is used to draw fills of data points with a positive trend (i.e. bars/candlesticks with close >= open).

If twoColored is false, the normal plottable's pen and brush are used (setPen, setBrush).

See also
setBrushNegative, setPenPositive, setPenNegative

§ setBrushNegative()

void QCPFinancial::setBrushNegative ( const QBrush &  brush)

If setTwoColored is set to true, this function controls the brush that is used to draw fills of data points with a negative trend (i.e. bars/candlesticks with close < open).

If twoColored is false, the normal plottable's pen and brush are used (setPen, setBrush).

See also
setBrushPositive, setPenNegative, setPenPositive

§ setPenPositive()

void QCPFinancial::setPenPositive ( const QPen &  pen)

If setTwoColored is set to true, this function controls the pen that is used to draw outlines of data points with a positive trend (i.e. bars/candlesticks with close >= open).

If twoColored is false, the normal plottable's pen and brush are used (setPen, setBrush).

See also
setPenNegative, setBrushPositive, setBrushNegative

§ setPenNegative()

void QCPFinancial::setPenNegative ( const QPen &  pen)

If setTwoColored is set to true, this function controls the pen that is used to draw outlines of data points with a negative trend (i.e. bars/candlesticks with close < open).

If twoColored is false, the normal plottable's pen and brush are used (setPen, setBrush).

See also
setPenPositive, setBrushNegative, setBrushPositive

§ addData() [1/2]

void QCPFinancial::addData ( const QVector< double > &  keys,
const QVector< double > &  open,
const QVector< double > &  high,
const QVector< double > &  low,
const QVector< double > &  close,
bool  alreadySorted = false 
)

This is an overloaded function.

Adds the provided points in keys, open, high, low and close to the current data. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

If you can guarantee that the passed data points are sorted by keys in ascending order, you can set alreadySorted to true, to improve performance by saving a sorting run.

Alternatively, you can also access and modify the data directly via the data method, which returns a pointer to the internal data container.

See also
timeSeriesToOhlc

§ addData() [2/2]

void QCPFinancial::addData ( double  key,
double  open,
double  high,
double  low,
double  close 
)

This is an overloaded function.

Adds the provided data point as key, open, high, low and close to the current data.

Alternatively, you can also access and modify the data directly via the data method, which returns a pointer to the internal data container.

See also
timeSeriesToOhlc

§ selectTestRect()

QCPDataSelection QCPFinancial::selectTestRect ( const QRectF &  rect,
bool  onlySelectable 
) const
virtual

Returns a data selection containing all the data points of this plottable which are contained (or hit by) rect. This is used mainly in the selection rect interaction for data selection (data selection mechanism).

If onlySelectable is true, an empty QCPDataSelection is returned if this plottable is not selectable (i.e. if QCPAbstractPlottable::setSelectable is QCP::stNone).

Note
rect must be a normalized rect (positive or zero width and height). This is especially important when using the rect of QCPSelectionRect::accepted, which is not necessarily normalized. Use QRect::normalized() when passing a rect which might not be normalized.

Reimplemented from QCPAbstractPlottable1D< QCPFinancialData >.

§ selectTest()

double QCPFinancial::selectTest ( const QPointF &  pos,
bool  onlySelectable,
QVariant *  details = 0 
) const
virtual

Implements a point-selection algorithm assuming the data (accessed via the 1D data interface) is point-like. Most subclasses will want to reimplement this method again, to provide a more accurate hit test based on the true data visualization geometry.

For general information about this virtual method, see the base class implementation.

Reimplemented from QCPAbstractPlottable1D< QCPFinancialData >.

§ getKeyRange()

QCPRange QCPFinancial::getKeyRange ( bool &  foundRange,
QCP::SignDomain  inSignDomain = QCP::sdBoth 
) const
virtual

Returns the coordinate range that all data in this plottable span in the key axis dimension. For logarithmic plots, one can set inSignDomain to either QCP::sdNegative or QCP::sdPositive in order to restrict the returned range to that sign domain. E.g. when only negative range is wanted, set inSignDomain to QCP::sdNegative and all positive points will be ignored for range calculation. For no restriction, just set inSignDomain to QCP::sdBoth (default). foundRange is an output parameter that indicates whether a range could be found or not. If this is false, you shouldn't use the returned range (e.g. no points in data).

Note that foundRange is not the same as QCPRange::validRange, since the range returned by this function may have size zero (e.g. when there is only one data point). In this case foundRange would return true, but the returned range is not a valid range in terms of QCPRange::validRange.

See also
rescaleAxes, getValueRange

Implements QCPAbstractPlottable.

§ getValueRange()

QCPRange QCPFinancial::getValueRange ( bool &  foundRange,
QCP::SignDomain  inSignDomain = QCP::sdBoth,
const QCPRange inKeyRange = QCPRange() 
) const
virtual

Returns the coordinate range that the data points in the specified key range (inKeyRange) span in the value axis dimension. For logarithmic plots, one can set inSignDomain to either QCP::sdNegative or QCP::sdPositive in order to restrict the returned range to that sign domain. E.g. when only negative range is wanted, set inSignDomain to QCP::sdNegative and all positive points will be ignored for range calculation. For no restriction, just set inSignDomain to QCP::sdBoth (default). foundRange is an output parameter that indicates whether a range could be found or not. If this is false, you shouldn't use the returned range (e.g. no points in data).

If inKeyRange has both lower and upper bound set to zero (is equal to QCPRange()), all data points are considered, without any restriction on the keys.

Note that foundRange is not the same as QCPRange::validRange, since the range returned by this function may have size zero (e.g. when there is only one data point). In this case foundRange would return true, but the returned range is not a valid range in terms of QCPRange::validRange.

See also
rescaleAxes, getKeyRange

Implements QCPAbstractPlottable.

§ timeSeriesToOhlc()

QCPFinancialDataContainer QCPFinancial::timeSeriesToOhlc ( const QVector< double > &  time,
const QVector< double > &  value,
double  timeBinSize,
double  timeBinOffset = 0 
)
static

A convenience function that converts time series data (value against time) to OHLC binned data points. The return value can then be passed on to QCPFinancialDataContainer::set(const QCPFinancialDataContainer&).

The size of the bins can be controlled with timeBinSize in the same units as time is given. For example, if the unit of time is seconds and single OHLC/Candlesticks should span an hour each, set timeBinSize to 3600.

timeBinOffset allows to control precisely at what time coordinate a bin should start. The value passed as timeBinOffset doesn't need to be in the range encompassed by the time keys. It merely defines the mathematical offset/phase of the bins that will be used to process the data.

§ draw()

void QCPFinancial::draw ( QCPPainter painter)
protectedvirtual

This function draws the layerable with the specified painter. It is only called by QCustomPlot, if the layerable is visible (setVisible).

Before this function is called, the painter's antialiasing state is set via applyDefaultAntialiasingHint, see the documentation there. Further, the clipping rectangle was set to clipRect.

Implements QCPAbstractPlottable.

§ drawLegendIcon()

void QCPFinancial::drawLegendIcon ( QCPPainter painter,
const QRectF &  rect 
) const
protectedvirtual

called by QCPLegend::draw (via QCPPlottableLegendItem::draw) to create a graphical representation of this plottable inside rect, next to the plottable name.

The passed painter has its cliprect set to rect, so painting outside of rect won't appear outside the legend icon border.

Implements QCPAbstractPlottable.

§ drawOhlcPlot()

void QCPFinancial::drawOhlcPlot ( QCPPainter painter,
const QCPFinancialDataContainer::const_iterator &  begin,
const QCPFinancialDataContainer::const_iterator &  end,
bool  isSelected 
)
protected

Draws the data from begin to end-1 as OHLC bars with the provided painter.

This method is a helper function for draw. It is used when the chart style is csOhlc.

§ drawCandlestickPlot()

void QCPFinancial::drawCandlestickPlot ( QCPPainter painter,
const QCPFinancialDataContainer::const_iterator &  begin,
const QCPFinancialDataContainer::const_iterator &  end,
bool  isSelected 
)
protected

Draws the data from begin to end-1 as Candlesticks with the provided painter.

This method is a helper function for draw. It is used when the chart style is csCandlestick.

§ getPixelWidth()

double QCPFinancial::getPixelWidth ( double  key,
double  keyPixel 
) const
protected

This function is used to determine the width of the bar at coordinate key, according to the specified width (setWidth) and width type (setWidthType). Provide the pixel position of key in keyPixel (because usually this was already calculated via QCPAxis::coordToPixel when this function is called).

It returns the number of pixels the bar extends to higher keys, relative to the key coordinate. So with a non-reversed horizontal axis, the return value is positive. With a reversed horizontal axis, the return value is negative. This is important so the open/close flags on the csOhlc bar are drawn to the correct side.

§ ohlcSelectTest()

double QCPFinancial::ohlcSelectTest ( const QPointF &  pos,
const QCPFinancialDataContainer::const_iterator &  begin,
const QCPFinancialDataContainer::const_iterator &  end,
QCPFinancialDataContainer::const_iterator &  closestDataPoint 
) const
protected

This method is a helper function for selectTest. It is used to test for selection when the chart style is csOhlc. It only tests against the data points between begin and end.

Like selectTest, this method returns the shortest distance of pos to the graphical representation of the plottable, and closestDataPoint will point to the respective data point.

§ candlestickSelectTest()

double QCPFinancial::candlestickSelectTest ( const QPointF &  pos,
const QCPFinancialDataContainer::const_iterator &  begin,
const QCPFinancialDataContainer::const_iterator &  end,
QCPFinancialDataContainer::const_iterator &  closestDataPoint 
) const
protected

This method is a helper function for selectTest. It is used to test for selection when the chart style is csCandlestick. It only tests against the data points between begin and end.

Like selectTest, this method returns the shortest distance of pos to the graphical representation of the plottable, and closestDataPoint will point to the respective data point.

§ getVisibleDataBounds()

void QCPFinancial::getVisibleDataBounds ( QCPFinancialDataContainer::const_iterator &  begin,
QCPFinancialDataContainer::const_iterator &  end 
) const
protected

called by the drawing methods to determine which data (key) range is visible at the current key axis range setting, so only that needs to be processed.

begin returns an iterator to the lowest data point that needs to be taken into account when plotting. Note that in order to get a clean plot all the way to the edge of the axis rect, begin may still be just outside the visible range.

end returns the iterator just above the highest data point that needs to be taken into account. Same as before, end may also lie just outside of the visible range

if the plottable contains no data, both begin and end point to constEnd.

§ selectionHitBox()

QRectF QCPFinancial::selectionHitBox ( QCPFinancialDataContainer::const_iterator  it) const
protected

Returns the hit box in pixel coordinates that will be used for data selection with the selection rect (selectTestRect), of the data point given by it.


The documentation for this class was generated from the following files: