Manages a single axis inside a QCustomPlot. Más...

Diagrama de herencias de QCPAxis

Clases
struct	CachedLabel

struct	TickLabelData

Tipos públicos
enum	AxisType { atLeft = 0x01, atRight = 0x02, atTop = 0x04, atBottom = 0x08 }

enum	LabelType { ltNumber, ltDateTime }

enum	ScaleType { stLinear, stLogarithmic }

enum	SelectablePart { spNone = 0, spAxis = 0x001, spTickLabels = 0x002, spAxisLabel = 0x004 }

Señales
void	ticksRequest ()

void	rangeChanged (const QCPRange &newRange)

void	rangeChanged (const QCPRange &newRange, const QCPRange &oldRange)

void	selectionChanged (const QCPAxis::SelectableParts &parts)

Métodos públicos
	QCPAxis (QCPAxisRect *parent, AxisType type)

AxisType	axisType () const

QCPAxisRect *	axisRect () const

ScaleType	scaleType () const

double	scaleLogBase () const

const QCPRange	range () const

bool	rangeReversed () const

bool	autoTicks () const

int	autoTickCount () const

bool	autoTickLabels () const

bool	autoTickStep () const

bool	autoSubTicks () const

bool	ticks () const

bool	tickLabels () const

int	tickLabelPadding () const

LabelType	tickLabelType () const

QFont	tickLabelFont () const

QColor	tickLabelColor () const

double	tickLabelRotation () const

QString	dateTimeFormat () const

Qt::TimeSpec	dateTimeSpec () const

QString	numberFormat () const

int	numberPrecision () const

double	tickStep () const

QVector< double >	tickVector () const

QVector< QString >	tickVectorLabels () const

int	tickLengthIn () const

int	tickLengthOut () const

int	subTickCount () const

int	subTickLengthIn () const

int	subTickLengthOut () const

QPen	basePen () const

QPen	tickPen () const

QPen	subTickPen () const

QFont	labelFont () const

QColor	labelColor () const

QString	label () const

int	labelPadding () const

int	padding () const

int	offset () const

SelectableParts	selectedParts () const

SelectableParts	selectableParts () const

QFont	selectedTickLabelFont () const

QFont	selectedLabelFont () const

QColor	selectedTickLabelColor () const

QColor	selectedLabelColor () const

QPen	selectedBasePen () const

QPen	selectedTickPen () const

QPen	selectedSubTickPen () const

QCPLineEnding	lowerEnding () const

QCPLineEnding	upperEnding () const

QCPGrid *	grid () const

void	setScaleType (ScaleType type)

void	setScaleLogBase (double base)

Q_SLOT void	setRange (const QCPRange &range)

void	setRange (double lower, double upper)

void	setRange (double position, double size, Qt::AlignmentFlag alignment)

void	setRangeLower (double lower)

void	setRangeUpper (double upper)

void	setRangeReversed (bool reversed)

void	setAutoTicks (bool on)

void	setAutoTickCount (int approximateCount)

void	setAutoTickLabels (bool on)

void	setAutoTickStep (bool on)

void	setAutoSubTicks (bool on)

void	setTicks (bool show)

void	setTickLabels (bool show)

void	setTickLabelPadding (int padding)

void	setTickLabelType (LabelType type)

void	setTickLabelFont (const QFont &font)

void	setTickLabelColor (const QColor &color)

void	setTickLabelRotation (double degrees)

void	setDateTimeFormat (const QString &format)

void	setDateTimeSpec (const Qt::TimeSpec &timeSpec)

void	setNumberFormat (const QString &formatCode)

void	setNumberPrecision (int precision)

void	setTickStep (double step)

void	setTickVector (const QVector< double > &vec)

void	setTickVectorLabels (const QVector< QString > &vec)

void	setTickLength (int inside, int outside=0)

void	setTickLengthIn (int inside)

void	setTickLengthOut (int outside)

void	setSubTickCount (int count)

void	setSubTickLength (int inside, int outside=0)

void	setSubTickLengthIn (int inside)

void	setSubTickLengthOut (int outside)

void	setBasePen (const QPen &pen)

void	setTickPen (const QPen &pen)

void	setSubTickPen (const QPen &pen)

void	setLabelFont (const QFont &font)

void	setLabelColor (const QColor &color)

void	setLabel (const QString &str)

void	setLabelPadding (int padding)

void	setPadding (int padding)

void	setOffset (int offset)

void	setSelectedTickLabelFont (const QFont &font)

void	setSelectedLabelFont (const QFont &font)

void	setSelectedTickLabelColor (const QColor &color)

void	setSelectedLabelColor (const QColor &color)

void	setSelectedBasePen (const QPen &pen)

void	setSelectedTickPen (const QPen &pen)

void	setSelectedSubTickPen (const QPen &pen)

Q_SLOT void	setSelectableParts (const QCPAxis::SelectableParts &selectableParts)

Q_SLOT void	setSelectedParts (const QCPAxis::SelectableParts &selectedParts)

void	setLowerEnding (const QCPLineEnding &ending)

void	setUpperEnding (const QCPLineEnding &ending)

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

Qt::Orientation	orientation () const

void	moveRange (double diff)

void	scaleRange (double factor, double center)

void	setScaleRatio (const QCPAxis *otherAxis, double ratio=1.0)

void	rescale (bool onlyVisiblePlottables=false)

double	pixelToCoord (double value) const

double	coordToPixel (double value) const

SelectablePart	getPartAt (const QPointF &pos) const

QList< QCPAbstractPlottable * >	plottables () const

QList< QCPGraph * >	graphs () const

QList< QCPAbstractItem * >	items () 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 públicos estáticos
static AxisType	marginSideToAxisType (QCP::MarginSide side)

Métodos protegidos
virtual void	setupTickVectors ()

virtual void	generateAutoTicks ()

virtual int	calculateAutoSubTickCount (double tickStep) const

virtual int	calculateMargin ()

virtual void	placeTickLabel (QCPPainter painter, double position, int distanceToAxis, const QString &text, QSize tickLabelsSize)

virtual void	drawTickLabel (QCPPainter *painter, double x, double y, const TickLabelData &labelData) const

virtual TickLabelData	getTickLabelData (const QFont &font, const QString &text) const

virtual QPointF	getTickLabelDrawOffset (const TickLabelData &labelData) const

virtual void	getMaxTickLabelSize (const QFont &font, const QString &text, QSize *tickLabelsSize) const

virtual void	applyDefaultAntialiasingHint (QCPPainter *painter) const

virtual void	draw (QCPPainter *painter)

virtual QCP::Interaction	selectionCategory () const

virtual void	selectEvent (QMouseEvent event, bool additive, const QVariant &details, bool selectionStateChanged)

virtual void	deselectEvent (bool *selectionStateChanged)

void	visibleTickBounds (int &lowIndex, int &highIndex) const

double	baseLog (double value) const

double	basePow (double value) const

QPen	getBasePen () const

QPen	getTickPen () const

QPen	getSubTickPen () const

QFont	getTickLabelFont () const

QFont	getLabelFont () const

QColor	getTickLabelColor () const

QColor	getLabelColor () const

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

virtual QRect	clipRect () const

void	initializeParentPlot (QCustomPlot *parentPlot)

void	setParentLayerable (QCPLayerable *parentLayerable)

bool	moveToLayer (QCPLayer *layer, bool prepend)

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

Atributos protegidos
AxisType	mAxisType

QCPAxisRect *	mAxisRect

int	mOffset

int	mPadding

Qt::Orientation	mOrientation

SelectableParts	mSelectableParts

SelectableParts	mSelectedParts

QPen	mBasePen

QPen	mSelectedBasePen

QCPLineEnding	mLowerEnding

QCPLineEnding	mUpperEnding

int	mLabelPadding

QString	mLabel

QFont	mLabelFont

QFont	mSelectedLabelFont

QColor	mLabelColor

QColor	mSelectedLabelColor

int	mTickLabelPadding

bool	mTickLabels

bool	mAutoTickLabels

double	mTickLabelRotation

LabelType	mTickLabelType

QFont	mTickLabelFont

QFont	mSelectedTickLabelFont

QColor	mTickLabelColor

QColor	mSelectedTickLabelColor

QString	mDateTimeFormat

Qt::TimeSpec	mDateTimeSpec

int	mNumberPrecision

char	mNumberFormatChar

bool	mNumberBeautifulPowers

bool	mNumberMultiplyCross

bool	mTicks

double	mTickStep

int	mSubTickCount

int	mAutoTickCount

bool	mAutoTicks

bool	mAutoTickStep

bool	mAutoSubTicks

int	mTickLengthIn

int	mTickLengthOut

int	mSubTickLengthIn

int	mSubTickLengthOut

QPen	mTickPen

QPen	mSelectedTickPen

QPen	mSubTickPen

QPen	mSelectedSubTickPen

QCPRange	mRange

bool	mRangeReversed

ScaleType	mScaleType

double	mScaleLogBase

double	mScaleLogBaseLogInv

QCPGrid *	mGrid

QCache< QString, CachedLabel >	mLabelCache

int	mLowestVisibleTick

int	mHighestVisibleTick

QChar	mExponentialChar

QChar	mPositiveSignChar

QVector< double >	mTickVector

QVector< QString >	mTickVectorLabels

QVector< double >	mSubTickVector

QRect	mAxisSelectionBox

QRect	mTickLabelsSelectionBox

QRect	mLabelSelectionBox

bool	mCachedMarginValid

int	mCachedMargin

Atributos protegidos heredados desde QCPLayerable
bool	mVisible

QCustomPlot *	mParentPlot

QPointer< QCPLayerable >	mParentLayerable

QCPLayer *	mLayer

bool	mAntialiased

Amigas
class	QCustomPlot

class	QCPGrid

class	QCPAxisRect

Descripción detallada

Manages a single axis inside a QCustomPlot.

Usually doesn't need to be instantiated externally. Access QCustomPlot's default four axes via QCustomPlot::xAxis (bottom), QCustomPlot::yAxis (left), QCustomPlot::xAxis2 (top) and QCustomPlot::yAxis2 (right).

Axes are always part of an axis rect, see QCPAxisRect.

Naming convention of axis parts

Overview of the spacings and paddings that define the geometry of an axis. The dashed gray line on the left represents the QCustomPlot widget border.

Documentación de las enumeraciones miembro de la clase

enum QCPAxis::AxisType

Defines at which side of the axis rect the axis will appear. This also affects how the tick marks are drawn, on which side the labels are placed etc.

Valores de enumeraciones
atLeft	`0x01` Axis is vertical and on the left side of the axis rect
atRight	`0x02` Axis is vertical and on the right side of the axis rect
atTop	`0x04` Axis is horizontal and on the top side of the axis rect
atBottom	`0x08` Axis is horizontal and on the bottom side of the axis rect

enum QCPAxis::LabelType

When automatic tick label generation is enabled (setAutoTickLabels), defines how the coordinate of the tick is interpreted, i.e. translated into a string.

Ver también: setTickLabelType

Valores de enumeraciones
ltNumber	Tick coordinate is regarded as normal number and will be displayed as such. (see setNumberFormat)
ltDateTime	Tick coordinate is regarded as a date/time (seconds since 1970-01-01T00:00:00 UTC) and will be displayed and formatted as such. (for details, see setDateTimeFormat)

enum QCPAxis::ScaleType

Defines the scale of an axis.

Ver también: setScaleType

Valores de enumeraciones
stLinear	Linear scaling.
stLogarithmic	Logarithmic scaling with correspondingly transformed plots and (major) tick marks at every base power (see setScaleLogBase).

enum QCPAxis::SelectablePart

Defines the selectable parts of an axis.

Ver también: setSelectableParts, setSelectedParts

Valores de enumeraciones
spNone	None of the selectable parts.
spAxis	The axis backbone and tick marks.
spTickLabels	Tick labels (numbers) of this axis (as a whole, not individually)
spAxisLabel	The axis label.

Documentación del constructor y destructor

QCPAxis::QCPAxis	(	QCPAxisRect *	parent,
		AxisType	type
	)

explicit

Constructs an Axis instance of Type type for the axis rect parent. You shouldn't instantiate axes directly, rather use QCPAxisRect::addAxis.

Documentación de las funciones miembro

double QCPAxis::coordToPixel ( double value ) const

Transforms value, in coordinates of the axis, to pixel coordinates of the QCustomPlot widget.

QCPAxis::SelectablePart QCPAxis::getPartAt ( const QPointF & pos ) const

Returns the part of the axis that is hit by pos (in pixels). The return value of this function is independent of the user-selectable parts defined with setSelectableParts. Further, this function does not change the current selection state of the axis.

If the axis is not visible (setVisible), this function always returns spNone.

Ver también: setSelectedParts, setSelectableParts, QCustomPlot::setInteractions

QList< QCPGraph * > QCPAxis::graphs ( ) const

Returns a list of all the graphs that have this axis as key or value axis.

Ver también: plottables, items

QCPGrid * QCPAxis::grid ( ) const

inline

Returns the QCPGrid instance belonging to this axis. Access it to set details about the way the grid is displayed.

QList< QCPAbstractItem * > QCPAxis::items ( ) const

Returns a list of all the items that are associated with this axis. An item is considered associated with an axis if at least one of its positions uses the axis as key or value axis.

Ver también: plottables, graphs

QCPAxis::AxisType QCPAxis::marginSideToAxisType ( QCP::MarginSide side )

static

Transforms a margin side to the logically corresponding axis type. (QCP::msLeft to QCPAxis::atLeft, QCP::msRight to QCPAxis::atRight, etc.)

void QCPAxis::moveRange ( double diff )

If the scale type (setScaleType) is stLinear, diff is added to the lower and upper bounds of the range. The range is simply moved by diff.

If the scale type is stLogarithmic, the range bounds are multiplied by diff. This corresponds to an apparent "linear" move in logarithmic scaling by a distance of log(diff).

Qt::Orientation QCPAxis::orientation ( ) const

inline

Returns the orientation of the axis. The axis orientation (horizontal or vertical) is deduced from the axis type (left, top, right or bottom).

double QCPAxis::pixelToCoord ( double value ) const

Transforms value, in pixel coordinates of the QCustomPlot widget, to axis coordinates.

QList< QCPAbstractPlottable * > QCPAxis::plottables ( ) const

Returns a list of all the plottables that have this axis as key or value axis.

If you are only interested in plottables of type QCPGraph, see graphs.

Ver también: graphs, items

void QCPAxis::rangeChanged ( const QCPRange & newRange )

signal

This signal is emitted when the range of this axis has changed. You can connect it to the setRange slot of another axis to communicate the new range to the other axis, in order for it to be synchronized.

void QCPAxis::rangeChanged	(	const QCPRange &	newRange,
		const QCPRange &	oldRange
	)

signal

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

Additionally to the new range, this signal also provides the previous range held by the axis as oldRange.

void QCPAxis::rescale ( bool onlyVisiblePlottables = false )

Changes the axis range such that all plottables associated with this axis are fully visible in that dimension.

Ver también: QCPAbstractPlottable::rescaleAxes, QCustomPlot::rescaleAxes

void QCPAxis::scaleRange	(	double	factor,
		double	center
	)

Scales the range of this axis by factor around the coordinate center. For example, if factor is 2.0, center is 1.0, then the axis range will double its size, and the point at coordinate 1.0 won't have changed its position in the QCustomPlot widget (i.e. coordinates around 1.0 will have moved symmetrically closer to 1.0).

void QCPAxis::selectionChanged ( const QCPAxis::SelectableParts & parts )

signal

This signal is emitted when the selection state of this axis has changed, either by user interaction or by a direct call to setSelectedParts.

double QCPAxis::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

Reimplementado de QCPLayerable.

void QCPAxis::setAutoSubTicks ( bool on )

Sets whether the number of sub ticks in one tick interval is determined automatically. This works, as long as the tick step mantissa is a multiple of 0.5. When setAutoTickStep is enabled, this is always the case.

When on is set to false, you may set the sub tick count with setSubTickCount manually.

void QCPAxis::setAutoTickCount ( int approximateCount )

When setAutoTickStep is true, approximateCount determines how many ticks should be generated in the visible range, approximately.

It's not guaranteed that this number of ticks is met exactly, but approximately within a tolerance of about two.

Only values greater than zero are accepted as approximateCount.

void QCPAxis::setAutoTickLabels ( bool on )

Sets whether the tick labels are generated automatically. Depending on the tick label type (ltNumber or ltDateTime), the labels will either show the coordinate as floating point number (setNumberFormat), or a date/time formatted according to setDateTimeFormat.

If on is set to false, you should provide the tick labels via setTickVectorLabels. This is usually used in a combination with setAutoTicks set to false for complete control over tick positions and labels, e.g. when the ticks should be at multiples of pi and show "2pi", "3pi" etc. as tick labels.

If you need dynamically calculated tick vectors (and possibly tick label vectors), set the vectors in a slot connected to the ticksRequest signal.

void QCPAxis::setAutoTicks ( bool on )

Sets whether the tick positions should be calculated automatically (either from an automatically generated tick step or a tick step provided manually via setTickStep, see setAutoTickStep).

If on is set to false, you must provide the tick positions manually via setTickVector. For these manual ticks you may let QCPAxis generate the appropriate labels automatically by leaving setAutoTickLabels set to true. If you also wish to control the displayed labels manually, set setAutoTickLabels to false and provide the label strings with setTickVectorLabels.

If you need dynamically calculated tick vectors (and possibly tick label vectors), set the vectors in a slot connected to the ticksRequest signal.

void QCPAxis::setAutoTickStep ( bool on )

Sets whether the tick step, i.e. the interval between two (major) ticks, is calculated automatically. If on is set to true, the axis finds a tick step that is reasonable for human readable plots.

The number of ticks the algorithm aims for within the visible range can be set with setAutoTickCount.

If on is set to false, you may set the tick step manually with setTickStep.

void QCPAxis::setBasePen ( const QPen & pen )

Sets the pen, the axis base line is drawn with.

Ver también: setTickPen, setSubTickPen

void QCPAxis::setDateTimeFormat ( const QString & format )

Sets the format in which dates and times are displayed as tick labels, if setTickLabelType is ltDateTime. for details about the format string, see the documentation of QDateTime::toString().

Newlines can be inserted with "\n".

Ver también: setDateTimeSpec

void QCPAxis::setDateTimeSpec ( const Qt::TimeSpec & timeSpec )

Sets the time spec that is used for the date time values when setTickLabelType is ltDateTime.

The default value of QDateTime objects (and also QCustomPlot) is Qt::LocalTime. However, if the date time values passed to QCustomPlot are given in the UTC spec, set timeSpec to Qt::UTC to get the correct axis labels.

Ver también: setDateTimeFormat

void QCPAxis::setLabel ( const QString & str )

Sets the text of the axis label that will be shown below/above or next to the axis, depending on its orientation. To disable axis labels, pass an empty string as str.

void QCPAxis::setLabelColor ( const QColor & color )

Sets the color of the axis label.

Ver también: setLabelFont

void QCPAxis::setLabelFont ( const QFont & font )

Sets the font of the axis label.

Ver también: setLabelColor

void QCPAxis::setLabelPadding ( int padding )

Sets the distance between the tick labels and the axis label.

Ver también: setTickLabelPadding, setPadding

void QCPAxis::setLowerEnding ( const QCPLineEnding & ending )

Sets the style for the lower axis ending. See the documentation of QCPLineEnding for available styles.

For horizontal axes, this method refers to the left ending, for vertical axes the bottom ending. Note that this meaning does not change when the axis range is reversed with setRangeReversed.

Ver también: setUpperEnding

void QCPAxis::setNumberFormat ( const QString & formatCode )

Sets the number format for the numbers drawn as tick labels (if tick label type is ltNumber). This formatCode is an extended version of the format code used e.g. by QString::number() and QLocale::toString(). For reference about that, see the "Argument Formats" section in the detailed description of the QString class. formatCode is a string of one, two or three characters. The first character is identical to the normal format code used by Qt. In short, this means: 'e'/'E' scientific format, 'f' fixed format, 'g'/'G' scientific or fixed, whichever is shorter.

The second and third characters are optional and specific to QCustomPlot:
If the first char was 'e' or 'g', numbers are/might be displayed in the scientific format, e.g. "5.5e9", which is ugly in a plot. So when the second char of formatCode is set to 'b' (for "beautiful"), those exponential numbers are formatted in a more natural way, i.e. "5.5 [multiplication sign] 10 [superscript] 9". By default, the multiplication sign is a centered dot. If instead a cross should be shown (as is usual in the USA), the third char of formatCode can be set to 'c'. The inserted multiplication signs are the UTF-8 characters 215 (0xD7) for the cross and 183 (0xB7) for the dot.

If the scale type (setScaleType) is stLogarithmic and the formatCode uses the 'b' option (beautifully typeset decimal powers), the display usually is "1 [multiplication sign] 10 [superscript] n", which looks unnatural for logarithmic scaling (the "1 [multiplication sign]" part). To only display the decimal power, set the number precision to zero with setNumberPrecision.

Examples for formatCode:

g normal format code behaviour. If number is small, fixed format is used, if number is large, normal scientific format is used
gb If number is small, fixed format is used, if number is large, scientific format is used with beautifully typeset decimal powers and a dot as multiplication sign
ebc All numbers are in scientific format with beautifully typeset decimal power and a cross as multiplication sign
fb illegal format code, since fixed format doesn't support (or need) beautifully typeset decimal powers. Format code will be reduced to 'f'.
hello illegal format code, since first char is not 'e', 'E', 'f', 'g' or 'G'. Current format code will not be changed.

void QCPAxis::setNumberPrecision ( int precision )

Sets the precision of the tick label numbers. See QLocale::toString(double i, char f, int prec) for details. The effect of precisions are most notably for number Formats starting with 'e', see setNumberFormat

If the scale type (setScaleType) is stLogarithmic and the number format (setNumberFormat) uses the 'b' format code (beautifully typeset decimal powers), the display usually is "1 [multiplication sign] 10 [superscript] n", which looks unnatural for logarithmic scaling (the redundant "1 [multiplication sign]" part). To only display the decimal power "10 [superscript] n", set precision to zero.

void QCPAxis::setOffset ( int offset )

Sets the offset the axis has to its axis rect side.

If an axis rect side has multiple axes, only the offset of the inner most axis has meaning. The offset of the other axes is controlled automatically, to place the axes at appropriate positions to prevent them from overlapping.

void QCPAxis::setPadding ( int padding )

Sets the padding of the axis.

When QCPAxisRect::setAutoMargins is enabled, the padding is the additional outer most space, that is left blank.

The axis padding has no meaning if QCPAxisRect::setAutoMargins is disabled.

Ver también: setLabelPadding, setTickLabelPadding

void QCPAxis::setRange ( const QCPRange & range )

Sets the range of the axis.

This slot may be connected with the rangeChanged signal of another axis so this axis is always synchronized with the other axis range, when it changes.

To invert the direction of an axis, use setRangeReversed.

void QCPAxis::setRange	(	double	lower,
		double	upper
	)

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

Sets the lower and upper bound of the axis range.

To invert the direction of an axis, use setRangeReversed.

There is also a slot to set a range, see setRange(const QCPRange &range).

void QCPAxis::setRange	(	double	position,
		double	size,
		Qt::AlignmentFlag	alignment
	)

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

Sets the range of the axis.

The position coordinate indicates together with the alignment parameter, where the new range will be positioned. size defines the size of the new axis range. alignment may be Qt::AlignLeft, Qt::AlignRight or Qt::AlignCenter. This will cause the left border, right border, or center of the range to be aligned with position. Any other values of alignment will default to Qt::AlignCenter.

void QCPAxis::setRangeLower ( double lower )

Sets the lower bound of the axis range. The upper bound is not changed.

Ver también: setRange

void QCPAxis::setRangeReversed ( bool reversed )

Sets whether the axis range (direction) is displayed reversed. Normally, the values on horizontal axes increase left to right, on vertical axes bottom to top. When reversed is set to true, the direction of increasing values is inverted.

Note that the range and data interface stays the same for reversed axes, e.g. the lower part of the setRange interface will still reference the mathematically smaller number than the upper part.

void QCPAxis::setRangeUpper ( double upper )

Sets the upper bound of the axis range. The lower bound is not changed.

Ver también: setRange

void QCPAxis::setScaleLogBase ( double base )

If setScaleType is set to stLogarithmic, base will be the logarithm base of the scaling. In logarithmic axis scaling, major tick marks appear at all powers of base.

Properties like tick step (setTickStep) don't apply in logarithmic scaling. If you wish a decimal base but less major ticks, consider choosing base 100, 1000 or even higher.

void QCPAxis::setScaleRatio	(	const QCPAxis *	otherAxis,
		double	ratio = `1.0`
	)

Scales the range of this axis to have a certain scale ratio to otherAxis. The scaling will be done around the center of the current axis range.

For example, if ratio is 1, this axis is the yAxis and otherAxis is xAxis, graphs plotted with those axes will appear in a 1:1 aspect ratio, independent of the aspect ratio the axis rect has.

This is an operation that changes the range of this axis once, it doesn't fix the scale ratio indefinitely. Note that calling this function in the constructor of the QCustomPlot's parent won't have the desired effect, since the widget dimensions aren't defined yet, and a resizeEvent will follow.

void QCPAxis::setScaleType ( ScaleType type )

Sets whether the axis uses a linear scale or a logarithmic scale. If type is set to stLogarithmic, the logarithm base can be set with setScaleLogBase. In logarithmic axis scaling, major tick marks appear at all powers of the logarithm base. Properties like tick step (setTickStep) don't apply in logarithmic scaling. If you wish a decimal base but less major ticks, consider choosing a logarithm base of 100, 1000 or even higher.

If type is stLogarithmic and the number format (setNumberFormat) uses the 'b' option (beautifully typeset decimal powers), the display usually is "1 [multiplication sign] 10 [superscript] n", which looks unnatural for logarithmic scaling (the "1 [multiplication sign]" part). To only display the decimal power, set the number precision to zero with setNumberPrecision.

void QCPAxis::setSelectableParts ( const QCPAxis::SelectableParts & selectableParts )

Sets whether the user can (de-)select the parts in selectable by clicking on the QCustomPlot surface. (When QCustomPlot::setInteractions contains iSelectAxes.)

However, even when selectable is set to a value not allowing the selection of a specific part, it is still possible to set the selection of this part manually, by calling setSelectedParts directly.

Ver también: SelectablePart, setSelectedParts

void QCPAxis::setSelectedBasePen ( const QPen & pen )

Sets the pen that is used to draw the axis base line when selected.

Ver también: setBasePen, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedLabelColor ( const QColor & color )

Sets the color that is used for the axis label when it is selected.

Ver también: setLabelColor, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedLabelFont ( const QFont & font )

Sets the font that is used for the axis label when it is selected.

Ver también: setLabelFont, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedParts ( const QCPAxis::SelectableParts & selectedParts )

Sets the selected state of the respective axis parts described by SelectablePart. When a part is selected, it uses a different pen/font.

The entire selection mechanism for axes is handled automatically when QCustomPlot::setInteractions contains iSelectAxes. You only need to call this function when you wish to change the selection state manually.

This function can change the selection state of a part, independent of the setSelectableParts setting.

emits the selectionChanged signal when selected is different from the previous selection state.

Ver también: SelectablePart, setSelectableParts, selectTest, setSelectedBasePen, setSelectedTickPen, setSelectedSubTickPen, setSelectedTickLabelFont, setSelectedLabelFont, setSelectedTickLabelColor, setSelectedLabelColor

void QCPAxis::setSelectedSubTickPen ( const QPen & pen )

Sets the pen that is used to draw the subticks when selected.

Ver también: setSubTickPen, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedTickLabelColor ( const QColor & color )

Sets the color that is used for tick labels when they are selected.

Ver también: setTickLabelColor, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedTickLabelFont ( const QFont & font )

Sets the font that is used for tick labels when they are selected.

Ver también: setTickLabelFont, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSelectedTickPen ( const QPen & pen )

Sets the pen that is used to draw the (major) ticks when selected.

Ver también: setTickPen, setSelectableParts, setSelectedParts, QCustomPlot::setInteractions

void QCPAxis::setSubTickCount ( int count )

Sets the number of sub ticks in one (major) tick step. A sub tick count of three for example, divides the tick intervals in four sub intervals.

By default, the number of sub ticks is chosen automatically in a reasonable manner as long as the mantissa of the tick step is a multiple of 0.5. When setAutoTickStep is enabled, this is always the case.

If you want to disable automatic sub tick count and use this function to set the count manually, see setAutoSubTicks.

void QCPAxis::setSubTickLength	(	int	inside,
		int	outside = `0`
	)

Sets the length of the subticks in pixels. inside is the length the subticks will reach inside the plot and outside is the length they will reach outside the plot. If outside is greater than zero, the tick labels and axis label will increase their distance to the axis accordingly, so they won't collide with the ticks.

void QCPAxis::setSubTickLengthIn ( int inside )

Sets the length of the inward subticks in pixels. inside is the length the subticks will reach inside the plot.

Ver también: setSubTickLengthOut, setTickLength

void QCPAxis::setSubTickLengthOut ( int outside )

Sets the length of the outward subticks in pixels. outside is the length the subticks will reach outside the plot. If outside is greater than zero, the tick labels will increase their distance to the axis accordingly, so they won't collide with the ticks.

Ver también: setSubTickLengthIn, setTickLength

void QCPAxis::setSubTickPen ( const QPen & pen )

Sets the pen, subtick marks will be drawn with.

Ver también: setSubTickCount, setSubTickLength, setBasePen

void QCPAxis::setTickLabelColor ( const QColor & color )

Sets the color of the tick labels.

Ver también: setTickLabels, setTickLabelFont

void QCPAxis::setTickLabelFont ( const QFont & font )

Sets the font of the tick labels.

Ver también: setTickLabels, setTickLabelColor

void QCPAxis::setTickLabelPadding ( int padding )

Sets the distance between the axis base line (including any outward ticks) and the tick labels.

Ver también: setLabelPadding, setPadding

void QCPAxis::setTickLabelRotation ( double degrees )

Sets the rotation of the tick labels. If degrees is zero, the labels are drawn normally. Else, the tick labels are drawn rotated by degrees clockwise. The specified angle is bound to values from -90 to 90 degrees.

If degrees is exactly -90, 0 or 90, the tick labels are centered on the tick coordinate. For other angles, the label is drawn with an offset such that it seems to point toward or away from the tick mark.

void QCPAxis::setTickLabels ( bool show )

Sets whether tick labels are displayed. Tick labels are the numbers drawn next to tick marks.

void QCPAxis::setTickLabelType ( LabelType type )

Sets whether the tick labels display numbers or dates/times.

If type is set to ltNumber, the format specifications of setNumberFormat apply.

If type is set to ltDateTime, the format specifications of setDateTimeFormat apply.

In QCustomPlot, date/time coordinates are double numbers representing the seconds since 1970-01-01T00:00:00 UTC. This format can be retrieved from QDateTime objects with the QDateTime::toTime_t() function. Since this only gives a resolution of one second, there is also the QDateTime::toMSecsSinceEpoch() function which returns the timespan described above in milliseconds. Divide its return value by 1000.0 to get a value with the format needed for date/time plotting, with a resolution of one millisecond.

Using the toMSecsSinceEpoch function allows dates that go back to 2nd January 4713 B.C. (represented by a negative number), unlike the toTime_t function, which works with unsigned integers and thus only goes back to 1st January 1970. So both for range and accuracy, use of toMSecsSinceEpoch()/1000.0 should be preferred as key coordinate for date/time axes.

Ver también: setTickLabels

void QCPAxis::setTickLength	(	int	inside,
		int	outside = `0`
	)

Sets the length of the ticks in pixels. inside is the length the ticks will reach inside the plot and outside is the length they will reach outside the plot. If outside is greater than zero, the tick labels and axis label will increase their distance to the axis accordingly, so they won't collide with the ticks.

Ver también: setSubTickLength

void QCPAxis::setTickLengthIn ( int inside )

Sets the length of the inward ticks in pixels. inside is the length the ticks will reach inside the plot.

Ver también: setTickLengthOut, setSubTickLength

void QCPAxis::setTickLengthOut ( int outside )

Sets the length of the outward ticks in pixels. outside is the length the ticks will reach outside the plot. If outside is greater than zero, the tick labels and axis label will increase their distance to the axis accordingly, so they won't collide with the ticks.

Ver también: setTickLengthIn, setSubTickLength

void QCPAxis::setTickPen ( const QPen & pen )

Sets the pen, tick marks will be drawn with.

Ver también: setTickLength, setBasePen

void QCPAxis::setTicks ( bool show )

Sets whether tick marks are displayed.

Note that setting show to false does not imply that tick labels are invisible, too. To achieve that, see setTickLabels.

void QCPAxis::setTickStep ( double step )

If setAutoTickStep is set to false, use this function to set the tick step manually. The tick step is the interval between (major) ticks, in plot coordinates.

Ver también: setSubTickCount

void QCPAxis::setTickVector ( const QVector< double > & vec )

If you want full control over what ticks (and possibly labels) the axes show, this function is used to set the coordinates at which ticks will appear.setAutoTicks must be disabled, else the provided tick vector will be overwritten with automatically generated tick coordinates upon replot. The labels of the ticks can be generated automatically when setAutoTickLabels is left enabled. If it is disabled, you can set the labels manually with setTickVectorLabels.

vec is a vector containing the positions of the ticks, in plot coordinates.

Atención: vec must be sorted in ascending order, no additional checks are made to ensure this.

Ver también: setTickVectorLabels

void QCPAxis::setTickVectorLabels ( const QVector< QString > & vec )

If you want full control over what ticks and labels the axes show, this function is used to set a number of QStrings that will be displayed at the tick positions which you need to provide with setTickVector. These two vectors should have the same size. (Note that you need to disable setAutoTicks and setAutoTickLabels first.)

vec is a vector containing the labels of the ticks. The entries correspond to the respective indices in the tick vector, passed via setTickVector.

Ver también: setTickVector

void QCPAxis::setUpperEnding ( const QCPLineEnding & ending )

Sets the style for the upper axis ending. See the documentation of QCPLineEnding for available styles.

For horizontal axes, this method refers to the right ending, for vertical axes the top ending. Note that this meaning does not change when the axis range is reversed with setRangeReversed.

Ver también: setLowerEnding

void QCPAxis::ticksRequest ( )

signal

This signal is emitted when setAutoTicks is false and the axis is about to generate tick labels for a replot.

Modifying the tick positions can be done with setTickVector. If you also want to control the tick labels, set setAutoTickLabels to false and also provide the labels with setTickVectorLabels.

If you only want static ticks you probably don't need this signal, since you can just set the tick vector (and possibly tick label vector) once. However, if you want to provide ticks (and maybe labels) dynamically, e.g. depending on the current axis range, connect a slot to this signal and set the vector/vectors there.

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