A plottable representing a graph in a plot. More...

Inheritance diagram for QCPlot::QCPGraph:

Public Types
enum	LineStyle { lsNone, lsLine, lsStepLeft, lsStepRight, lsStepCenter, lsImpulse }
	Defines how the graph's line is represented visually in the plot. More...

enum	ErrorType { etNone, etKey, etValue, etBoth }
	Defines what kind of error bars are drawn for each data point. More...

Public Member Functions
	QCPGraph (QCPAxis keyAxis, QCPAxis valueAxis)
	Constructs a graph which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). More...

const QCPDataMap *	data () const

LineStyle	lineStyle () const

QCP::ScatterStyle	scatterStyle () const

double	scatterSize () const

const QPixmap	scatterPixmap () const

ErrorType	errorType () const

QPen	errorPen () const

double	errorBarSize () const

bool	errorBarSkipSymbol () const

QCPGraph *	channelFillGraph () const

void	setData (QCPDataMap *data, bool copy=false)
	Replaces the current data with the provided data. More...

void	setData (const QVector< double > &key, const QVector< double > &value)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Replaces the current data with the provided points in key and value pairs. More...

void	setDataKeyError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &keyError)
	Replaces the current data with the provided points in key and value pairs. More...

void	setDataKeyError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &keyErrorMinus, const QVector< double > &keyErrorPlus)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs. More...

void	setDataValueError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &valueError)
	Replaces the current data with the provided points in key and value pairs. More...

void	setDataValueError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &valueErrorMinus, const QVector< double > &valueErrorPlus)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs. More...

void	setDataBothError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &keyError, const QVector< double > &valueError)
	Replaces the current data with the provided points in key and value pairs. More...

void	setDataBothError (const QVector< double > &key, const QVector< double > &value, const QVector< double > &keyErrorMinus, const QVector< double > &keyErrorPlus, const QVector< double > &valueErrorMinus, const QVector< double > &valueErrorPlus)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs. More...

void	setLineStyle (LineStyle ls)
	Sets how the single data points are connected in the plot or how they are represented visually apart from the scatter symbol. More...

void	setScatterStyle (QCP::ScatterStyle ss)
	Sets the visual appearance of single data points in the plot. More...

void	setScatterSize (double size)
	This defines how big (in pixels) single scatters are drawn, if scatter style (setScatterStyle) isn't QCP::ssNone, QCP::ssDot or QCP::ssPixmap. More...

void	setScatterPixmap (const QPixmap &pixmap)
	If the scatter style (setScatterStyle) is set to ssPixmap, this function defines the QPixmap that will be drawn centered on the data point coordinate. More...

void	setErrorType (ErrorType errorType)
	Sets which kind of error bars (Key Error, Value Error or both) should be drawn on each data point. More...

void	setErrorPen (const QPen &pen)
	Sets the pen with which the error bars will be drawn. More...

void	setErrorBarSize (double size)
	Sets the width of the handles at both ends of an error bar in pixels.

void	setErrorBarSkipSymbol (bool enabled)
	If enabled is set to true, the error bar will not be drawn as a solid line under the scatter symbol but leave some free space around the symbol. More...

void	setChannelFillGraph (QCPGraph *targetGraph)
	Sets the target graph for filling the area between this graph and targetGraph with the current brush (setBrush). More...

void	addData (const QCPDataMap &dataMap)
	Adds the provided data points in dataMap to the current data. More...

void	addData (const QCPData &data)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided single data point in data to the current data. More...

void	addData (double key, double value)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided single data point as key and value pair to the current data. More...

void	addData (const QVector< double > &keys, const QVector< double > &values)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided data points as key and value pairs to the current data. More...

void	removeDataBefore (double key)
	Removes all data points with keys smaller than key. More...

void	removeDataAfter (double key)
	Removes all data points with keys greater than key. More...

void	removeData (double fromKey, double toKey)
	Removes all data points with keys between fromKey and toKey. More...

void	removeData (double key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Removes a single data point at key. More...

virtual void	clearData ()
	Removes all data points. More...

virtual double	selectTest (const QPointF &pos) const
	This function is used to decide whether a click hits a plottable or not. More...

virtual void	rescaleAxes (bool onlyEnlarge, bool includeErrorBars) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Allows to define whether error bars are taken into consideration when determining the new axis range.

virtual void	rescaleKeyAxis (bool onlyEnlarge, bool includeErrorBars) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Allows to define whether error bars (of kind QCPGraph::etKey) are taken into consideration when determining the new axis range.

virtual void	rescaleValueAxis (bool onlyEnlarge, bool includeErrorBars) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Allows to define whether error bars (of kind QCPGraph::etValue) are taken into consideration when determining the new axis range.

Public Member Functions inherited from QCPlot::QCPAbstractPlottable
	QCPAbstractPlottable (QCPAxis keyAxis, QCPAxis valueAxis)
	Constructs an abstract plottable which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). More...

QString	name () const

bool	antialiasedFill () const

bool	antialiasedScatters () const

bool	antialiasedErrorBars () const

QPen	pen () const

QPen	selectedPen () const

QBrush	brush () const

QBrush	selectedBrush () const

QCPAxis *	keyAxis () const

QCPAxis *	valueAxis () const

bool	selectable () const

bool	selected () const

void	setName (const QString &name)
	The name is the textual representation of this plottable as it is displayed in the QCPLegend of the parent QCustomPlot. More...

void	setAntialiasedFill (bool enabled)
	Sets whether fills of this plottable is drawn antialiased or not. More...

void	setAntialiasedScatters (bool enabled)
	Sets whether the scatter symbols of this plottable are drawn antialiased or not. More...

void	setAntialiasedErrorBars (bool enabled)
	Sets whether the error bars of this plottable are drawn antialiased or not. More...

void	setPen (const QPen &pen)
	The pen is used to draw basic lines that make up the plottable representation in the plot. More...

void	setSelectedPen (const QPen &pen)
	When the plottable is selected, this pen is used to draw basic lines instead of the normal pen set via setPen. More...

void	setBrush (const QBrush &brush)
	The brush is used to draw basic fills of the plottable representation in the plot. More...

void	setSelectedBrush (const QBrush &brush)
	When the plottable is selected, this brush is used to draw fills instead of the normal brush set via setBrush. More...

void	setKeyAxis (QCPAxis *axis)
	The key axis of a plottable can be set to any axis of a QCustomPlot, as long as it is orthogonal to the plottable's value axis. More...

void	setValueAxis (QCPAxis *axis)
	The value axis of a plottable can be set to any axis of a QCustomPlot, as long as it is orthogonal to the plottable's key axis. More...

void	setSelectable (bool selectable)
	Sets whether the user can (de-)select this plottable by clicking on the QCustomPlot surface. More...

void	setSelected (bool selected)
	Sets whether this plottable is selected or not. More...

void	rescaleAxes (bool onlyEnlarge=false) const
	Rescales the key and value axes associated with this plottable to contain all displayed data, so the whole plottable is visible. More...

void	rescaleKeyAxis (bool onlyEnlarge=false) const
	Rescales the key axis of the plottable so the whole plottable is visible. More...

void	rescaleValueAxis (bool onlyEnlarge=false) const
	Rescales the value axis of the plottable so the whole plottable is visible. More...

virtual bool	addToLegend ()
	Adds this plottable to the legend of the parent QCustomPlot. More...

virtual bool	removeFromLegend () const
	Removes the plottable from the legend of the parent QCustomPlot. More...

Public Member Functions inherited from QCPlot::QCPLayerable
	QCPLayerable (QCustomPlot *parentPlot)
	Creates a new QCPLayerable instance. More...

bool	visible () const

QCustomPlot *	parentPlot () const

QCPLayer *	layer () const

bool	antialiased () const

void	setVisible (bool on)
	Sets the visibility of this layerable object. More...

bool	setLayer (QCPLayer *layer)
	Sets the layer of this layerable object. More...

bool	setLayer (const QString &layerName)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Sets the layer of this layerable object by name. More...

void	setAntialiased (bool enabled)
	Sets whether this object will be drawn antialiased or not. More...

Protected Member Functions
virtual void	draw (QCPPainter *painter)

virtual void	drawLegendIcon (QCPPainter *painter, const QRect &rect) const

void	getPlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	getScatterPlotData (QVector< QCPData > *pointData) const

void	getLinePlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	getStepLeftPlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	getStepRightPlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	getStepCenterPlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	getImpulsePlotData (QVector< QPointF > lineData, QVector< QCPData > pointData) const

void	drawFill (QCPPainter painter, QVector< QPointF > lineData) const

void	drawScatterPlot (QCPPainter painter, QVector< QCPData > pointData) const

void	drawLinePlot (QCPPainter painter, QVector< QPointF > lineData) const

void	drawImpulsePlot (QCPPainter painter, QVector< QPointF > lineData) const

void	drawError (QCPPainter *painter, double x, double y, const QCPData &data) const

void	getVisibleDataBounds (QCPDataMap::const_iterator &lower, QCPDataMap::const_iterator &upper, int &count) const

void	addFillBasePoints (QVector< QPointF > *lineData) const

void	removeFillBasePoints (QVector< QPointF > *lineData) const

QPointF	lowerFillBasePoint (double lowerKey) const

QPointF	upperFillBasePoint (double upperKey) const

const QPolygonF	getChannelFillPolygon (const QVector< QPointF > *lineData) const

int	findIndexBelowX (const QVector< QPointF > *data, double x) const

int	findIndexAboveX (const QVector< QPointF > *data, double x) const

int	findIndexBelowY (const QVector< QPointF > *data, double y) const

int	findIndexAboveY (const QVector< QPointF > *data, double y) const

double	pointDistance (const QPointF &pixelPoint) const

virtual QCPRange	getKeyRange (bool &validRange, SignDomain inSignDomain=sdBoth) const

virtual QCPRange	getValueRange (bool &validRange, SignDomain inSignDomain=sdBoth) const

virtual QCPRange	getKeyRange (bool &validRange, SignDomain inSignDomain, bool includeErrors) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Allows to specify whether the error bars should be included in the range calculation. More...

virtual QCPRange	getValueRange (bool &validRange, SignDomain inSignDomain, bool includeErrors) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Allows to specify whether the error bars should be included in the range calculation. More...

Protected Member Functions inherited from QCPlot::QCPAbstractPlottable
virtual QRect	clipRect () const

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

QPen	mainPen () const

QBrush	mainBrush () const

void	applyDefaultAntialiasingHint (QCPPainter *painter) const

void	applyFillAntialiasingHint (QCPPainter *painter) const

void	applyScattersAntialiasingHint (QCPPainter *painter) const

void	applyErrorBarsAntialiasingHint (QCPPainter *painter) const

double	distSqrToLine (const QPointF &start, const QPointF &end, const QPointF &point) const

Protected Member Functions inherited from QCPlot::QCPLayerable
bool	moveToLayer (QCPLayer *layer, bool prepend)

void	applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const

Protected Attributes
QCPDataMap *	mData

QPen	mErrorPen

LineStyle	mLineStyle

QCP::ScatterStyle	mScatterStyle

double	mScatterSize

QPixmap	mScatterPixmap

ErrorType	mErrorType

double	mErrorBarSize

bool	mErrorBarSkipSymbol

QCPGraph *	mChannelFillGraph

Protected Attributes inherited from QCPlot::QCPAbstractPlottable
QString	mName

bool	mAntialiasedFill

bool	mAntialiasedScatters

bool	mAntialiasedErrorBars

QPen	mPen

QPen	mSelectedPen

QBrush	mBrush

QBrush	mSelectedBrush

QCPAxis *	mKeyAxis

QCPAxis *	mValueAxis

bool	mSelected

bool	mSelectable

Protected Attributes inherited from QCPlot::QCPLayerable
bool	mVisible

QCustomPlot *	mParentPlot

QCPLayer *	mLayer

bool	mAntialiased

Friends
class	QCustomPlot

class	QCPLegend

Additional Inherited Members
Signals inherited from QCPlot::QCPAbstractPlottable
void	selectionChanged (bool selected)
	This signal is emitted when the selection state of this plottable has changed, either by user interaction or by a direct call to setSelected.

Protected Types inherited from QCPlot::QCPAbstractPlottable
enum	SignDomain { sdNegative, sdBoth, sdPositive }
	Represents negative and positive sign domain for passing to getKeyRange and getValueRange. More...

Detailed Description

A plottable representing a graph in a plot.

Usually QCustomPlot creates it internally via QCustomPlot::addGraph and the resulting instance is accessed via QCustomPlot::graph.

To plot data, assign it with the setData or addData functions.

Changing the appearance

The appearance of the graph is mainly determined by the line style, scatter style, brush and pen of the graph (setLineStyle, setScatterStyle, setBrush, setPen).

Filling under or between graphs

QCPGraph knows two types of fills: Normal graph fills towards the zero-value-line parallel to the key axis of the graph, and fills between two graphs, called channel fills. To enable a fill, just set a brush with setBrush which is neither Qt::NoBrush nor fully transparent.

By default, a normal fill towards the zero-value-line will be drawn. To set up a channel fill between this graph and another one, call setChannelFillGraph with the other graph as parameter.

See Also: QCustomPlot::addGraph, QCustomPlot::graph, QCPLegend::addGraph

Member Enumeration Documentation

enum QCPlot::QCPGraph::ErrorType

Defines what kind of error bars are drawn for each data point.

Enumerator
etNone	No error bars are shown.
etKey	Error bars for the key dimension of the data point are shown.
etValue	Error bars for the value dimension of the data point are shown.
etBoth	Error bars for both key and value dimensions of the data point are shown.

enum QCPlot::QCPGraph::LineStyle

Defines how the graph's line is represented visually in the plot.

The line is drawn with the current pen of the graph (setPen).

See Also: setLineStyle

Enumerator
lsNone	data points are not connected with any lines (e.g. data only represented < with symbols according to the scatter style, see setScatterStyle)
lsLine	data points are connected by a straight line
lsStepLeft	line is drawn as steps where the step height is the value of the left data point
lsStepRight	line is drawn as steps where the step height is the value of the right data point
lsStepCenter	line is drawn as steps where the step is in between two data points
lsImpulse	each data point is represented by a line parallel to the value axis, which reaches from the data point to the zero-value-line

Constructor & Destructor Documentation

QCPlot::QCPGraph::QCPGraph	(	QCPAxis *	keyAxis,
		QCPAxis *	valueAxis
	)

explicit

Constructs a graph 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 constructed QCPGraph can be added to the plot with QCustomPlot::addPlottable, QCustomPlot then takes ownership of the graph.

To directly create a graph inside a plot, you can also use the simpler QCustomPlot::addGraph function.

Member Function Documentation

void QCPlot::QCPGraph::addData ( const QCPDataMap & dataMap )

Adds the provided data points in dataMap to the current data.

See Also: removeData

void QCPlot::QCPGraph::addData ( const QCPData & data )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided single data point in data to the current data.

See Also: removeData

void QCPlot::QCPGraph::addData	(	double	key,
		double	value
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided single data point as key and value pair to the current data.

See Also: removeData

void QCPlot::QCPGraph::addData	(	const QVector< double > &	keys,
		const QVector< double > &	values
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Adds the provided data points as key and value pairs to the current data.

See Also: removeData

void QCPlot::QCPGraph::clearData ( )

virtual

Removes all data points.

See Also: removeData, removeDataAfter, removeDataBefore

Implements QCPlot::QCPAbstractPlottable.

QCPRange QCPlot::QCPGraph::getKeyRange	(	bool &	validRange,
		SignDomain	inSignDomain,
		bool	includeErrors
	)		const

protectedvirtual

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Allows to specify whether the error bars should be included in the range calculation.

See Also: getKeyRange(bool &validRange, SignDomain inSignDomain)

QCPRange QCPlot::QCPGraph::getValueRange	(	bool &	validRange,
		SignDomain	inSignDomain,
		bool	includeErrors
	)		const

protectedvirtual

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Allows to specify whether the error bars should be included in the range calculation.

See Also: getValueRange(bool &validRange, SignDomain inSignDomain)

void QCPlot::QCPGraph::removeData	(	double	fromKey,
		double	toKey
	)

Removes all data points with keys between fromKey and toKey.

if fromKey is greater or equal to toKey, the function does nothing. To remove a single data point with known key, use removeData(double key).

See Also: addData, clearData

void QCPlot::QCPGraph::removeData ( double key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Removes a single data point at key.

If the position is not known with absolute precision, consider using removeData(double fromKey, double toKey) with a small fuzziness interval around the suspected position, depeding on the precision with which the key is known.

See Also: addData, clearData

void QCPlot::QCPGraph::removeDataAfter ( double key )

Removes all data points with keys greater than key.

See Also: addData, clearData

void QCPlot::QCPGraph::removeDataBefore ( double key )

Removes all data points with keys smaller than key.

See Also: addData, clearData

double QCPlot::QCPGraph::selectTest ( const QPointF & pos ) const

virtual

This function is used to decide whether a click hits a plottable or not.

pos is a point in pixel coordinates on the QCustomPlot surface. This function returns the shortest pixel distance of this point to the plottable (e.g. to the scatters/lines of a graph). If the plottable is either invisible, contains no data or the distance couldn't be determined, -1.0 is returned. setSelectable has no influence on the return value of this function.

If the plottable is represented not by single lines but by an area like QCPBars or QCPStatisticalBox, a click inside the area returns a constant value greater zero (typically 99% of the selectionTolerance of the parent QCustomPlot). If the click lies outside the area, this function returns -1.0.

Providing a constant value for area objects allows selecting line objects even when they are obscured by such area objects, by clicking close to the lines (i.e. closer than 0.99*selectionTolerance).

The actual setting of the selection state is not done by this function. This is handled by the parent QCustomPlot when the mouseReleaseEvent occurs.

See Also: setSelected, QCustomPlot::setInteractions

Implements QCPlot::QCPAbstractPlottable.

void QCPlot::QCPGraph::setChannelFillGraph ( QCPGraph * targetGraph )

Sets the target graph for filling the area between this graph and targetGraph with the current brush (setBrush).

When targetGraph is set to 0, a normal graph fill will be produced. This means, when the brush is not Qt::NoBrush or fully transparent, a fill all the way to the zero-value-line parallel to the key axis of this graph will be drawn. To disable any filling, set the brush to Qt::NoBrush.

See Also: setBrush

void QCPlot::QCPGraph::setData	(	QCPDataMap *	data,
		bool	copy = `false`
	)

Replaces the current data with the provided data.

If copy is set to true, data points in data will only be copied. if false, the graph takes ownership of the passed data and replaces the internal data pointer with it. This is significantly faster than copying for large datasets.

void QCPlot::QCPGraph::setData	(	const QVector< double > &	key,
		const QVector< double > &	value
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Replaces the current data with the provided points in key and value pairs.

The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

void QCPlot::QCPGraph::setDataBothError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	keyError,
		const QVector< double > &	valueError
	)

Replaces the current data with the provided points in key and value pairs.

Additionally the symmetrical key and value errors of the data points are set to the values in keyError and valueError. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

For asymmetrical errors (plus different from minus), see the overloaded version of this function.

void QCPlot::QCPGraph::setDataBothError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	keyErrorMinus,
		const QVector< double > &	keyErrorPlus,
		const QVector< double > &	valueErrorMinus,
		const QVector< double > &	valueErrorPlus
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs.

Additionally the negative key and value errors of the data points are set to the values in keyErrorMinus and valueErrorMinus. The positive key and value errors are set to the values in keyErrorPlus valueErrorPlus. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

void QCPlot::QCPGraph::setDataKeyError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	keyError
	)

Replaces the current data with the provided points in key and value pairs.

Additionally the symmetrical key error of the data points are set to the values in keyError. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

For asymmetrical errors (plus different from minus), see the overloaded version of this function.

void QCPlot::QCPGraph::setDataKeyError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	keyErrorMinus,
		const QVector< double > &	keyErrorPlus
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs.

Additionally the negative key error of the data points are set to the values in keyErrorMinus, the positive key error to keyErrorPlus. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

void QCPlot::QCPGraph::setDataValueError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	valueError
	)

Replaces the current data with the provided points in key and value pairs.

Additionally the symmetrical value error of the data points are set to the values in valueError. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

For asymmetrical errors (plus different from minus), see the overloaded version of this function.

void QCPlot::QCPGraph::setDataValueError	(	const QVector< double > &	key,
		const QVector< double > &	value,
		const QVector< double > &	valueErrorMinus,
		const QVector< double > &	valueErrorPlus
	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Replaces the current data with the provided points in key and value pairs.

Additionally the negative value error of the data points are set to the values in valueErrorMinus, the positive value error to valueErrorPlus. For error bars to show appropriately, see setErrorType. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

void QCPlot::QCPGraph::setErrorBarSkipSymbol ( bool enabled )

If enabled is set to true, the error bar will not be drawn as a solid line under the scatter symbol but leave some free space around the symbol.

This feature uses the current scatter size (setScatterSize) to determine the size of the area to leave blank. So when drawing Pixmaps as scatter points (QCP::ssPixmap), the scatter size must be set manually to a value corresponding to the size of the Pixmap, if the error bars should leave gaps to its boundaries.

void QCPlot::QCPGraph::setErrorPen ( const QPen & pen )

Sets the pen with which the error bars will be drawn.

See Also: setErrorBarSize, setErrorType

void QCPlot::QCPGraph::setErrorType ( ErrorType errorType )

Sets which kind of error bars (Key Error, Value Error or both) should be drawn on each data point.

If you set errorType to something other than etNone, make sure to actually pass error data via the specific setData functions along with the data points (e.g. setDataValueError, setDataKeyError, setDataBothError).

See Also: ErrorType

void QCPlot::QCPGraph::setLineStyle ( LineStyle ls )

Sets how the single data points are connected in the plot or how they are represented visually apart from the scatter symbol.

For scatter-only plots, set ls to lsNone and setScatterStyle to the desired scatter style.

See Also: setScatterStyle

void QCPlot::QCPGraph::setScatterPixmap ( const QPixmap & pixmap )

If the scatter style (setScatterStyle) is set to ssPixmap, this function defines the QPixmap that will be drawn centered on the data point coordinate.

See Also: ScatterStyle

void QCPlot::QCPGraph::setScatterSize ( double size )

This defines how big (in pixels) single scatters are drawn, if scatter style (setScatterStyle) isn't QCP::ssNone, QCP::ssDot or QCP::ssPixmap.

Floating point values are allowed for fine grained control over optical appearance with antialiased painting.

See Also: ScatterStyle

void QCPlot::QCPGraph::setScatterStyle ( QCP::ScatterStyle ss )

Sets the visual appearance of single data points in the plot.

If set to QCP::ssNone, no scatter points are drawn (e.g. for line-only-plots with appropriate line style).

See Also: ScatterStyle, setLineStyle

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

DataVisualizer/qcustomplot.h
DataVisualizer/qcustomplot.cpp

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Detailed Description

Changing the appearance

Filling under or between graphs

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