A plottable representing a bar chart in a plot. Más...

Diagrama de herencias de QCPBars

Métodos públicos
	QCPBars (QCPAxis keyAxis, QCPAxis valueAxis)

double	width () const

QCPBars *	barBelow () const

QCPBars *	barAbove () const

QCPBarDataMap *	data () const

void	setWidth (double width)

void	setData (QCPBarDataMap *data, bool copy=false)

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

void	moveBelow (QCPBars *bars)

void	moveAbove (QCPBars *bars)

void	addData (const QCPBarDataMap &dataMap)

void	addData (const QCPBarData &data)

void	addData (double key, double value)

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

void	removeDataBefore (double key)

void	removeDataAfter (double key)

void	removeData (double fromKey, double toKey)

void	removeData (double key)

virtual void	clearData ()

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

Métodos públicos heredados desde QCPAbstractPlottable
	QCPAbstractPlottable (QCPAxis keyAxis, QCPAxis valueAxis)

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)

void	setAntialiasedFill (bool enabled)

void	setAntialiasedScatters (bool enabled)

void	setAntialiasedErrorBars (bool enabled)

void	setPen (const QPen &pen)

void	setSelectedPen (const QPen &pen)

void	setBrush (const QBrush &brush)

void	setSelectedBrush (const QBrush &brush)

void	setKeyAxis (QCPAxis *axis)

void	setValueAxis (QCPAxis *axis)

Q_SLOT void	setSelectable (bool selectable)

Q_SLOT void	setSelected (bool selected)

virtual bool	addToLegend ()

virtual bool	removeFromLegend () const

void	rescaleAxes (bool onlyEnlarge=false) const

void	rescaleKeyAxis (bool onlyEnlarge=false) const

void	rescaleValueAxis (bool onlyEnlarge=false) const

Métodos públicos heredados desde QCPLayerable
	QCPLayerable (QCustomPlot plot, QString targetLayer="", QCPLayerable parentLayerable=0)

bool	visible () const

QCustomPlot *	parentPlot () const

QCPLayerable *	parentLayerable () const

QCPLayer *	layer () const

bool	antialiased () const

void	setVisible (bool on)

bool	setLayer (QCPLayer *layer)

bool	setLayer (const QString &layerName)

void	setAntialiased (bool enabled)

bool	realVisibility () const

Métodos protegidos
virtual void	draw (QCPPainter *painter)

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

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

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

QPolygonF	getBarPolygon (double key, double value) const

double	getBaseValue (double key, bool positive) const

Métodos protegidos heredados desde 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	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	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

Métodos protegidos heredados desde QCPLayerable
virtual void	parentPlotInitialized (QCustomPlot *parentPlot)

void	initializeParentPlot (QCustomPlot *parentPlot)

void	setParentLayerable (QCPLayerable *parentLayerable)

bool	moveToLayer (QCPLayer *layer, bool prepend)

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

Métodos protegidos estáticos
static void	connectBars (QCPBars lower, QCPBars upper)

Atributos protegidos
QCPBarDataMap *	mData

double	mWidth

QPointer< QCPBars >	mBarBelow

QPointer< QCPBars >	mBarAbove

Atributos protegidos heredados desde QCPAbstractPlottable
QString	mName

bool	mAntialiasedFill

bool	mAntialiasedScatters

bool	mAntialiasedErrorBars

QPen	mPen

QPen	mSelectedPen

QBrush	mBrush

QBrush	mSelectedBrush

QPointer< QCPAxis >	mKeyAxis

QPointer< QCPAxis >	mValueAxis

bool	mSelectable

bool	mSelected

Atributos protegidos heredados desde QCPLayerable
bool	mVisible

QCustomPlot *	mParentPlot

QPointer< QCPLayerable >	mParentLayerable

QCPLayer *	mLayer

bool	mAntialiased

Amigas
class	QCustomPlot

class	QCPLegend

Otros miembros heredados
Señales heredados desde QCPAbstractPlottable
void	selectionChanged (bool selected)

Tipos protegidos heredados desde QCPAbstractPlottable
enum	SignDomain { sdNegative, sdBoth, sdPositive }

Descripción detallada

A plottable representing a bar chart in a plot.

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

Changing the appearance

The appearance of the bars is determined by the pen and the brush (setPen, setBrush).

Bar charts are stackable. This means, Two QCPBars plottables can be placed on top of each other (see QCPBars::moveAbove). Then, when two bars are at the same key position, they will appear stacked.

Usage

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

Usually, you first create an instance:

QCPBars *newBars = new QCPBars(customPlot->xAxis, customPlot->yAxis);

add it to the customPlot with QCustomPlot::addPlottable:

customPlot->addPlottable(newBars);

and then modify the properties of the newly created plottable, e.g.:

newBars->setName("Country population");

newBars->setData(xData, yData);

Documentación del constructor y destructor

QCPBars::QCPBars	(	QCPAxis *	keyAxis,
		QCPAxis *	valueAxis
	)

explicit

Constructs a bar 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 constructed QCPBars can be added to the plot with QCustomPlot::addPlottable, QCustomPlot then takes ownership of the bar chart.

Documentación de las funciones miembro

void QCPBars::addData ( const QCPBarDataMap & dataMap )

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

Ver también: removeData

void QCPBars::addData ( const QCPBarData & data )

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Adds the provided single data point in data to the current data.

Ver también: removeData

void QCPBars::addData	(	double	key,
		double	value
	)

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Adds the provided single data point as key and value tuple to the current data

Ver también: removeData

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

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Adds the provided data points as key and value tuples to the current data.

Ver también: removeData

QCPBars * QCPBars::barAbove ( ) const

inline

Returns the bars plottable that is directly above this bars plottable. If there is no such plottable, returns 0.

Ver también: barBelow, moveBelow, moveAbove

QCPBars * QCPBars::barBelow ( ) const

inline

Returns the bars plottable that is directly below this bars plottable. If there is no such plottable, returns 0.

Ver también: barAbove, moveBelow, moveAbove

void QCPBars::clearData ( )

virtual

Removes all data points.

Ver también: removeData, removeDataAfter, removeDataBefore

Implementa QCPAbstractPlottable.

void QCPBars::moveAbove ( QCPBars * bars )

Moves this bars plottable above bars. In other words, the bars of this plottable will appear above the bars of bars. The move target bars must use the same key and value axis as this plottable.

Inserting into and removing from existing bar stacking is handled gracefully. If bars already has a bars object below itself, this bars object is inserted between the two. If this bars object is already between two other bars, the two other bars will be stacked on top of each other after the operation.

To remove this bars plottable from any stacking, set bars to 0.

Ver también: moveBelow, barBelow, barAbove

void QCPBars::moveBelow ( QCPBars * bars )

Moves this bars plottable below bars. In other words, the bars of this plottable will appear below the bars of bars. The move target bars must use the same key and value axis as this plottable.

Inserting into and removing from existing bar stacking is handled gracefully. If bars already has a bars object below itself, this bars object is inserted between the two. If this bars object is already between two other bars, the two other bars will be stacked on top of each other after the operation.

To remove this bars plottable from any stacking, set bars to 0.

Ver también: moveBelow, barAbove, barBelow

void QCPBars::removeData	(	double	fromKey,
		double	toKey
	)

Removes all data points with key 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).

Ver también: addData, clearData

void QCPBars::removeData ( double key )

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.

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.

Ver también: addData, clearData

void QCPBars::removeDataAfter ( double key )

Removes all data points with key greater than key.

Ver también: addData, clearData

void QCPBars::removeDataBefore ( double key )

Removes all data points with key smaller than key.

Ver también: addData, clearData

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

virtual

This function is used to decide whether a click hits a layerable object 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 object. If the object is either invisible or the distance couldn't be determined, -1.0 is returned. Further, if onlySelectable is true and the object is not selectable, -1.0 is returned, too.

If the item is represented not by single lines but by an area like QCPItemRect or QCPItemText, a click inside the area returns a constant value greater zero (typically the selectionTolerance of the parent QCustomPlot multiplied by 0.99). 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, and the finally selected object is notified via the selectEvent/deselectEvent methods.

details is an optional output parameter. Every layerable subclass may place any information in details. This information will be passed to selectEvent when the parent QCustomPlot decides on the basis of this selectTest call, that the object was successfully selected. The subsequent call to selectEvent will carry the details. This is useful for multi-part objects (like QCPAxis). This way, a possibly complex calculation to decide which part was clicked is only done once in selectTest. The result (i.e. the actually clicked part) can then be placed in details. So in the subsequent selectEvent, the decision which part was selected doesn't have to be done a second time for a single selection operation.

You may pass 0 as details to indicate that you are not interested in those selection details.

Ver también: selectEvent, deselectEvent, QCustomPlot::setInteractions

Implementa QCPAbstractPlottable.

void QCPBars::setData	(	QCPBarDataMap *	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 plottable takes ownership of the passed data and replaces the internal data pointer with it. This is significantly faster than copying for large datasets.

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

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.

Replaces the current data with the provided points in key and value tuples. The provided vectors should have equal length. Else, the number of added points will be the size of the smallest vector.

void QCPBars::setWidth ( double width )

Sets the width of the bars in plot (key) coordinates.

La documentación para esta clase fue generada a partir de los siguientes ficheros:

Métodos públicos

Métodos protegidos

Métodos protegidos estáticos

Atributos protegidos

Amigas

Otros miembros heredados

Descripción detallada

Changing the appearance

Usage

Documentación del constructor y destructor

Documentación de las funciones miembro