JKQTPlotter trunk/v5.0.0
an extensive Qt5+Qt6 Plotter framework (including a feature-richt plotter widget, a speed-optimized, but limited variant and a LaTeX equation renderer!), written fully in C/C++ and without external dependencies
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interprets data as a stream of x- or y-positions $ p_i $ (depending in yPeaks ) ans plots a line on the height baseline and upright lines from baseline to baseline+peakHeight at each position $ p_i $. This can be used to display a stream of photons with given arrivaltimes $ p_i $. More...

#include <jkqtppeakstream.h>

Inheritance diagram for JKQTPPeakStreamGraph:
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Collaboration diagram for JKQTPPeakStreamGraph:
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Public Member Functions

 JKQTPPeakStreamGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPPeakStreamGraph (JKQTPlotter *parent)
virtual void draw (JKQTPEnhancedPainter &painter) override
 plots the graph to the plotter object specified as parent
virtual void drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
 plots a key marker inside the specified rectangle rect
double getBaseline () const
 position of the baseline
bool getDrawBaseline () const
 indicates whether to draw the basleine (default: true )
virtual QColor getKeyLabelColor () const override
 returns the color to be used for the key label
double getPeakHeight () const
 height of each peak
virtual bool getXMinMax (double &minx, double &maxx, double &smallestGreaterZero) override
 get the maximum and minimum x-value of the graph
virtual bool getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
 get the maximum and minimum y-value of the graph
bool getYPeaks () const
 if set true the peaks are in Y direction (default: true)
void setBaseline (double __value)
 position of the baseline
void setColor (QColor col)
 set symbol color and fill color at the same time
void setDrawBaseline (bool __value)
 indicates whether to draw the basleine (default: true )
void setPeakHeight (double __value)
 height of each peak
void setYPeaks (bool __value)
 if set true the peaks are in Y direction (default: true)
Public Member Functions inherited from JKQTPSingleColumnGraph
 JKQTPSingleColumnGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
int getDataColumn () const
 the column that contains the datapoints
DataDirection getDataDirection () const
 interpret the data from dataColumn either as X- or Y-data
DataSortOrder getDataSortOrder () const
 if !=Unsorted, the data is sorted before plotting
virtual bool usesColumn (int c) const override
 returns true if the given column is used by the graph
Public Member Functions inherited from JKQTPGraph
 JKQTPGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
virtual ~JKQTPGraph ()=default
 default wirtual destructor
Public Member Functions inherited from JKQTPPlotElement
 JKQTPPlotElement (JKQTBasePlotter *parent=nullptr)
 class constructor
virtual ~JKQTPPlotElement ()=default
 default wirtual destructor
QPointF backTransform (const QPointF &x) const
 tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
QPointF backTransform (double x, double y) const
 tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
double backtransformX (double x) const
 tool routine that backtransforms an x-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in xAxisRef
double backtransformY (double y) const
 tool routine that backtransforms a y-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in yAxisRef
virtual void drawOutside (JKQTPEnhancedPainter &painter, QRect leftSpace, QRect rightSpace, QRect topSpace, QRect bottomSpace)
 plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
QImage generateKeyMarker (QSize size=QSize(16, 16))
 returns an image with a key marker inside
virtual void getOutsideSize (JKQTPEnhancedPainter &painter, int &leftSpace, int &rightSpace, int &topSpace, int &bottomSpace)
 if the graph plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
JKQTBasePlottergetParent ()
 returns the parent painter class
const JKQTBasePlottergetParent () const
 returns the parent painter class
QString getTitle () const
 returns the the title of the plot
const JKQTPCoordinateAxisgetXAxis () const
 returns the actual x-Axis-object from the parent plotter, referenced in xAxisRef
JKQTPCoordinateAxisRef getXAxisRef () const
 indicates which coordinate axis to use for coordinate transforms in x-direction
const JKQTPCoordinateAxisgetYAxis () const
 returns the actual y-Axis-object from the parent plotter, referenced in yAxisRef
JKQTPCoordinateAxisRef getYAxisRef () const
 indicates which coordinate axis to use for coordinate transforms in y-direction
virtual double hitTest (const QPointF &posSystem, QPointF *closestSpotSystem=nullptr, QString *label=nullptr, HitTestMode mode=HitTestXY) const
 returns the closest distance of the plot element to the (screen pixel) position pos, or NAN
bool isHighlighted () const
 returns whether the graph is shown in a highlighted style in the plot
bool isVisible () const
 returns whether the graph is visible in the plot
void setAxes (JKQTPCoordinateAxisRef ref)
 set the coordinate axes to use for this plot element
virtual void setParent (JKQTBasePlotter *parent)
 sets the parent painter class
virtual void setParent (JKQTPlotter *parent)
 sets the parent painter class
void setXAxis (JKQTPCoordinateAxisRef ref)
 indicates which coordinate axis to use for coordinate transforms in x-direction
void setYAxis (JKQTPCoordinateAxisRef ref)
 indicates which coordinate axis to use for coordinate transforms in y-direction
QPointF transform (const QPointF &x) const
 tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPolygonF transform (const QPolygonF &x) const
 tool routine that transforms a QPolygonF according to the parent's transformation rules (plot coordinate --> pixels)
QPointF transform (double x, double y) const
 tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPainterPath transformToLinePath (const QPolygonF &x) const
 tool routine that transforms a QPolygonF according to the parent's transformation rules and returns a (non-closed) path consisting of lines (plot coordinate --> pixels)
QVector< double > transformX (const QVector< double > &x) const
 transform all x-coordinates in a vector x
double transformX (double x) const
 tool routine that transforms an x-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in xAxisRef
QVector< double > transformY (const QVector< double > &x) const
 transform all y-coordinates in a vector x
double transformY (double y) const
 tool routine that transforms a y-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in yAxisRef
Public Member Functions inherited from JKQTPGraphLineStyleMixin
 JKQTPGraphLineStyleMixin ()
 class constructor
virtual ~JKQTPGraphLineStyleMixin ()
QColor getHighlightingLineColor () const
 get the color of the graph line when highlighted
QPen getHighlightingLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
 constructs a QPen from the line styling properties
QPen getHighlightingLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
 constructs a QPen from the line styling properties, suitable for drawing rectangle with sharp corners
QPen getKeyLinePen (JKQTPEnhancedPainter &painter, const QRectF &rect, JKQTBasePlotter *parent) const
 constructs a QPen from the line styling properties, but uses getKeyLineWidthPx() for the width, i.e. constructs a pen for drawing lines in key-symbols
double getKeyLineWidthPx (JKQTPEnhancedPainter &painter, const QRectF &keyRect, const JKQTBasePlotter *parent) const
 returns the linewidth for drawing lines in a key entry with keyRect for the symbol, using painter and parent .
QBrush getLineBrush () const
 gets the brush used to fill the line area
Qt::PenCapStyle getLineCapStyle () const
 gets the cap style
QColor getLineColor () const
 get the color of the graph line
qreal getLineDashOffset () const
 returns the dash offset for a custom dash style
QVector< qreal > getLineDashPattern () const
 gets the dash pattern for a custom dash style
Qt::PenJoinStyle getLineJoinStyle () const
 returns the join style
QPen getLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
 constructs a QPen from the line styling properties
QPen getLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
 constructs a QPen from the line styling properties, suitable for drawing rectangles with sharp edges
Qt::PenStyle getLineStyle () const
 get the style of the graph line
double getLineWidth () const
 get the line width of the graph line (in pt)
void initLineStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
 initiaize the line style (from the parent plotter)
void setHighlightingLineColor (const QColor &__value)
 set the color of the graph line when highlighted
void setHighlightingLineColor (const QColor &__value, double alpha)
 set the color of the graph line when highlighted
void setLineBrush (const QBrush &style)
 sets the brush used to fill the line area
void setLineCapStyle (Qt::PenCapStyle style)
 sets the cap style
void setLineColor (const QColor &__value)
 set the color of the graph line
void setLineColor (const QColor &__value, double alpha)
 set the color of the graph line
void setLineColorInvertedFrom (QColor __noninvertedColor)
 sets the line-color as an inverted version of the given color
void setLineDashOffset (qreal offset)
 sets the dash offset for a custom dash style
void setLineDashPattern (const QVector< qreal > &pattern)
 sets the dash pattern for a custom dash style
void setLineJoinStyle (Qt::PenJoinStyle style)
 sets the join style
void setLineStyle (Qt::PenStyle __value)
 set the style of the graph line
void setLineWidth (double __value)
 set the line width of the graph line (in pt)

Protected Attributes

double baseline
 position of the baseline
bool drawBaseline
 indicates whether to draw the basleine (default: true )
double peakHeight
 height of each peak
bool yPeaks
 if set true the peaks are in Y direction (default: true)
Protected Attributes inherited from JKQTPSingleColumnGraph
QVector< int > sortedIndices
 this array contains the order of indices, in which to access the data in the data columns
Protected Attributes inherited from JKQTPPlotElement
QVector< HitTestLocationm_hitTestData
 dataset with graph-points and associated data from the function hitTest()
JKQTBasePlotterparent
 the plotter object this object belongs to
int parentPlotStyle
 internal storage for the used parent plot style

Additional Inherited Members

Public Types inherited from JKQTPSingleColumnGraph
enum class  DataDirection {
  X ,
  Y
}
 specifies whether the data for a JKQTPSingleColumnGraph represent x-axis or y-axis values More...
enum  DataSortOrder {
  Unsorted =0 ,
  Sorted =1
}
 specifies how to sort the data for a JKQTPSingleColumnGraph before drawing More...
Public Types inherited from JKQTPPlotElement
enum  HitTestMode {
  HitTestXY ,
  HitTestXOnly ,
  HitTestYOnly
}
 modes of operation for the function hitTest() More...
Public Slots inherited from JKQTPSingleColumnGraph
void setDataColumn (int __value)
 the column that contains the datapoints
void setDataColumn (size_t __value)
 the column that contains the datapoints
void setDataDirection (DataDirection __value)
 interpret the data from dataColumn either as X- or Y-data
void setDataSortOrder (DataSortOrder __value)
 if !=Unsorted, the data is sorted before plotting
void setDataSortOrder (int __value)
 if !=Unsorted, the data is sorted before plotting
Public Slots inherited from JKQTPPlotElement
void setHighlighted (bool __value)
 sets whether the graph is drawn in a highlighted style in the plot
virtual void setTitle (const QString &__value)
 sets the title of the plot (for display in key!).
void setVisible (bool __value)
 sets whether the graph is visible in the plot
Protected Member Functions inherited from JKQTPSingleColumnGraph
int getDataIndex (int i) const
 returns the index of the i-th datapoint (where i is an index into the SORTED datapoints)
virtual bool getIndexRange (int &imin, int &imax) const
 determines the range of row indexes available in the data columns of this graph
virtual void intSortData ()
Protected Member Functions inherited from JKQTPGraph
virtual void drawErrorsAfter (JKQTPEnhancedPainter &)
 this function is used to plot error inidcators after plotting the graphs.
virtual void drawErrorsBefore (JKQTPEnhancedPainter &)
 this function is used to plot error inidcators before plotting the graphs.
bool getDataMinMax (int column, double &minx, double &maxx, double &smallestGreaterZero)
 get the maximum and minimum value of the given column
Protected Member Functions inherited from JKQTPPlotElement
void addHitTestData (const HitTestLocation &loc)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, int index_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
 clear the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void addHitTestData (double x_, double y_, const QString &label_)
 add a new point on the graph to the internal datastore for hitTest()
void addHitTestData (double x_, double y_, int index_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (double x_, double y_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
 add a new point on the graph to the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void clearHitTestData ()
 clear the internal datastore for hitTest()
virtual QString formatHitTestDefaultLabel (double x, double y, int index=-1, const JKQTPDatastore *datastore=nullptr) const
 tool-function for hitTest(), which formats a default label, taking into account the x- and y-position (both provided) and optionally the errors of these positions.
void reserveHitTestData (int points)
 reserve list entries for up to points graph points in the internal datastore for hitTest()
QString xFloatToString (double v, int past_comma=-1) const
 converts a x-value v into a string, taking into account the type of x-axis
QString yFloatToString (double v, int past_comma=-1) const
 converts a x-value v into a string, taking into account the type of x-axis
Properties inherited from JKQTPSingleColumnGraph
int dataColumn
 the column that contains the datapoints
DataDirection dataDirection
 interpret the data from dataColumn either as X- or Y-data
DataSortOrder sortData
 if !=Unsorted, the data is sorted before plotting
Properties inherited from JKQTPPlotElement
bool highlighted
 indicates whether the graph is shown in a "highlghted" in the plot
QString title
 title of the plot (for display in key!). If no title is supplied, no key entry is drawn.
bool visible
 indicates whether the graph is visible in the plot
JKQTPCoordinateAxisRef xAxisRef
 indicates which coordinate axis to use for coordinate transforms in x-direction
JKQTPCoordinateAxisRef yAxisRef
 indicates which coordinate axis to use for coordinate transforms in y-direction
Properties inherited from JKQTPGraphLineStyleMixin
QColor highlightingLineColor
QColor lineColor
Qt::PenStyle lineStyle
double lineWidth

Detailed Description

interprets data as a stream of x- or y-positions $ p_i $ (depending in yPeaks ) ans plots a line on the height baseline and upright lines from baseline to baseline+peakHeight at each position $ p_i $. This can be used to display a stream of photons with given arrivaltimes $ p_i $.

yPeaks=true
yPeaks=false
See also
Tutorial (JKQTPDatastore): Advanced 1-Dimensional Statistics with JKQTPDatastore

Constructor & Destructor Documentation

◆ JKQTPPeakStreamGraph() [1/2]

JKQTPPeakStreamGraph::JKQTPPeakStreamGraph ( JKQTBasePlotter * parent = nullptr)

class constructor

◆ JKQTPPeakStreamGraph() [2/2]

JKQTPPeakStreamGraph::JKQTPPeakStreamGraph ( JKQTPlotter * parent)

Member Function Documentation

◆ draw()

virtual void JKQTPPeakStreamGraph::draw ( JKQTPEnhancedPainter & painter)
overridevirtual

plots the graph to the plotter object specified as parent

Implements JKQTPPlotElement.

◆ drawKeyMarker()

virtual void JKQTPPeakStreamGraph::drawKeyMarker ( JKQTPEnhancedPainter & painter,
const QRectF & rect )
overridevirtual

plots a key marker inside the specified rectangle rect

Implements JKQTPPlotElement.

◆ getBaseline()

double JKQTPPeakStreamGraph::getBaseline ( ) const

position of the baseline

◆ getDrawBaseline()

bool JKQTPPeakStreamGraph::getDrawBaseline ( ) const

indicates whether to draw the basleine (default: true )

◆ getKeyLabelColor()

virtual QColor JKQTPPeakStreamGraph::getKeyLabelColor ( ) const
overridevirtual

returns the color to be used for the key label

Implements JKQTPPlotElement.

◆ getPeakHeight()

double JKQTPPeakStreamGraph::getPeakHeight ( ) const

height of each peak

◆ getXMinMax()

virtual bool JKQTPPeakStreamGraph::getXMinMax ( double & minx,
double & maxx,
double & smallestGreaterZero )
overridevirtual

get the maximum and minimum x-value of the graph

The result is given in the two parameters which are call-by-reference parameters!

Parameters
[out]minxminimal x-value used in the graph
[out]maxxmaximal x-value used in the graph
[out]smallestGreaterZerothe smalles x-value in the graph, which is larger than 0 (this is used in auto-sizing for logarithmic axes)
Returns
true on success, i.e. if there were datapoints in the plot, or false on failure (e.g. when the graph is empty)

Implements JKQTPPlotElement.

◆ getYMinMax()

virtual bool JKQTPPeakStreamGraph::getYMinMax ( double & miny,
double & maxy,
double & smallestGreaterZero )
overridevirtual

get the maximum and minimum y-value of the graph

The result is given in the two parameters which are call-by-reference parameters!

Parameters
[out]minyminimal y-value used in the graph
[out]maxymaximal y-value used in the graph
[out]smallestGreaterZerothe smalles y-value in the graph, which is larger than 0 (this is used in auto-sizing for logarithmic axes)
Returns
true on success, i.e. if there were datapoints in the plot, or false on failure (e.g. when the graph is empty)

Implements JKQTPPlotElement.

◆ getYPeaks()

bool JKQTPPeakStreamGraph::getYPeaks ( ) const

if set true the peaks are in Y direction (default: true)

◆ setBaseline()

void JKQTPPeakStreamGraph::setBaseline ( double __value)

position of the baseline

◆ setColor()

void JKQTPPeakStreamGraph::setColor ( QColor col)

set symbol color and fill color at the same time

◆ setDrawBaseline()

void JKQTPPeakStreamGraph::setDrawBaseline ( bool __value)

indicates whether to draw the basleine (default: true )

◆ setPeakHeight()

void JKQTPPeakStreamGraph::setPeakHeight ( double __value)

height of each peak

◆ setYPeaks()

void JKQTPPeakStreamGraph::setYPeaks ( bool __value)

if set true the peaks are in Y direction (default: true)

Member Data Documentation

◆ baseline

double JKQTPPeakStreamGraph::baseline
protected

position of the baseline

◆ drawBaseline

bool JKQTPPeakStreamGraph::drawBaseline
protected

indicates whether to draw the basleine (default: true )

◆ peakHeight

double JKQTPPeakStreamGraph::peakHeight
protected

height of each peak

◆ yPeaks

bool JKQTPPeakStreamGraph::yPeaks
protected

if set true the peaks are in Y direction (default: true)


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