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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This implements line plots where the data is taken from a user supplied function $ [x,y]=f(t) $ The function is evaluated on a user-specified range $ t \in \left[t_\text{min}, t_\text{max}\right] $. More...

#include <jkqtpevaluatedparametriccurve.h>

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

 JKQTPXYFunctionLineGraph (const jkqtpParametricCurveFunctionType &f, const QString &title, double tmin_, double tmax_, JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraph (const jkqtpParametricCurveFunctionType &f, const QString &title, double tmin_=0, double tmax_=1, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPXYFunctionLineGraph (const jkqtpSimpleParametricCurveFunctionType &f, const QString &title, double tmin_, double tmax_, JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraph (const jkqtpSimpleParametricCurveFunctionType &f, const QString &title, double tmin_=0, double tmax_=1, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPXYFunctionLineGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPXYFunctionLineGraph (JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraph (jkqtpParametricCurveFunctionType &&f, const QString &title, double tmin_, double tmax_, JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraph (jkqtpParametricCurveFunctionType &&f, const QString &title, double tmin_=0, double tmax_=1, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPXYFunctionLineGraph (jkqtpSimpleParametricCurveFunctionType &&f, const QString &title, double tmin_, double tmax_, JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraph (jkqtpSimpleParametricCurveFunctionType &&f, const QString &title, double tmin_=0, double tmax_=1, JKQTBasePlotter *parent=nullptr)
 class constructor
virtual ~JKQTPXYFunctionLineGraph () override
 class destructor
jkqtpParametricCurveFunctionType getPlotFunctionFunctor () const
 the function to be plotted
jkqtpSimpleParametricCurveFunctionType getSimplePlotFunction () const
 a simple function to be plotted, simplified form without parameters
bool isSimplePlotFunction () const
 returns whether the plot function was defined as a jkqtpSimpleParametricCurveFunctionType (true ) or a jkqtpParametricCurveFunctionType (false )
void setPlotFunctionFunctor (const jkqtpParametricCurveFunctionType &__value)
 sets a functor to be plotted
void setPlotFunctionFunctor (const jkqtpSimpleParametricCurveFunctionType &__value)
 sets a functor to be plotted
void setPlotFunctionFunctor (jkqtpParametricCurveFunctionType &&__value)
 sets a functor to be plotted
void setPlotFunctionFunctor (jkqtpSimpleParametricCurveFunctionType &&__value)
 sets a functor to be plotted
Public Member Functions inherited from JKQTPXYFunctionLineGraphBase
 JKQTPXYFunctionLineGraphBase (double tmin_, double tmax_, JKQTBasePlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraphBase (double tmin_, double tmax_, JKQTPlotter *parent)
 class constructor
 JKQTPXYFunctionLineGraphBase (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPXYFunctionLineGraphBase (JKQTPlotter *parent)
 class constructor
virtual ~JKQTPXYFunctionLineGraphBase () override
 class destructor
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
virtual QColor getKeyLabelColor () const override
 returns the color to be used for the key label
double getTMax () const
 upper bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 1
double getTMin () const
 lower bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 0
QPair< double, double > getTRange () const
 returns the t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $
Public Member Functions inherited from JKQTPEvaluatedFunctionGraphBase
 JKQTPEvaluatedFunctionGraphBase (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPEvaluatedFunctionGraphBase (JKQTPlotter *parent)
 class constructor
virtual ~JKQTPEvaluatedFunctionGraphBase ()
 class destructor
double getDataCleanupMaxAllowedAngleDegree () const
 in the clean-up step of plot-data creation, a point is removed from the data, if it caused its neighboring line-segments to form an angle less than this value, given in degrees.
bool getDisplaySamplePoints () const
 if true [default: off] display the points where the function has been sampled
QVector< double > & getInternalParams ()
 returns the currently set internal parameter vector
const QVector< double > & getInternalParams () const
 returns the currently set internal parameter vector
unsigned int getMaxRefinementDegree () const
 the maximum number of recursive refinement steps
double getMinPixelPerSample () const
 create one sample at least every minPixelPerSample pixels
unsigned int getMinSamples () const
 the minimum number of points to evaluate the function at
int getParameterColumn () const
 if set, the values from this datatsore column are used for the parameters p1 , p2 , p3 , ... of the plot function
double getSlopeTolerance () const
 the tolerance for the difference of two subsequent slopes
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
void setCopiedParams (const double *params, int N)
 sets the params from a copy of the given array of length N
virtual void setParams (const QVector< double > &params)
 sets the params as a pointer to an internal COPY of the given vector (not the data of the vector, as then the size would be unknown!!!)
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 Member Functions

virtual PlotFunctorSpec buildPlotFunctorSpec () override
 this function returns a functor that is used to generate the plot data in coordinate space, based on a range of the dependent variable in coordinate space. In addition it also contains the value range over which to evaluate the functor PlotFunctorSpec::func
Protected Member Functions inherited from JKQTPEvaluatedFunctionGraphBase
virtual void collectParameters ()
 ensure that current function parameters for a plot function (which may stem from different sources, as direct data, a datastore column ...) are stored in iparams
virtual void createPlotData (bool collectParams=true)
 fill the data array with data from the function plotFunction
void drawSamplePoints (JKQTPEnhancedPainter &painter, QColor graphColor)
 draw all the sample points in data as small symbols
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

Protected Attributes

jkqtpParametricCurveFunctionType plotFunction
 the function to be plotted
jkqtpSimpleParametricCurveFunctionType simplePlotFunction
 a simple function to be plotted, simplified form without parameters
Protected Attributes inherited from JKQTPXYFunctionLineGraphBase
double tmax
 upper bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 1
double tmin
 lower bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 0
Protected Attributes inherited from JKQTPEvaluatedFunctionGraphBase
QVector< QPointF > data
 plot data calculated by createPlotData(), i.e. the datapoints $ \mbox{transform}\left(x, y=f(x, \vec{p})\right) $ to be plotted
double dataCleanupMaxAllowedAngleDegree
 in the clean-up step of plot-data creation, a point is removed from the data, if it caused its neighboring line-segments to form an angle less than this value, given in degrees.
bool displaySamplePoints
 if true [default: off] display the points where the function has been sampled
QVector< double > iparams
 internal storage for the current function parameters for plotFunction (which may stem from different sources, as direct data, a datastore column ...)
unsigned int maxRefinementDegree
 the maximum number of recursive refinement steps
double minPixelPerSample
 create one sample at least every minPixelPerSample pixels
unsigned int minSamples
 the minimum number of points to evaluate the function at
int parameterColumn
 if set, the values from this datatsore column are used for the parameters p1 , p2 , p3 , ... of the plot function
double slopeTolerance
 the tolerance for the difference of two subsequent slopes
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 JKQTPPlotElement
enum  HitTestMode {
  HitTestXY ,
  HitTestXOnly ,
  HitTestYOnly
}
 modes of operation for the function hitTest() More...
Public Slots inherited from JKQTPXYFunctionLineGraphBase
void setTMax (double val)
 upper bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 1
void setTMin (double val)
 lower bound of t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $ , i.e. $ t_\text{min} $ , default is 0
void setTRange (const QPair< double, double > &range)
 set the t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $
void setTRange (double tmin_, double tmax_)
 set the t-value range for $ [x,y]=f(t), t \in \left[t_\text{min}, t_\text{max}\right] $
Public Slots inherited from JKQTPEvaluatedFunctionGraphBase
void setDataCleanupMaxAllowedAngleDegree (double __value)
 in the clean-up step of plot-data creation, a point is removed from the data, if it caused its neighboring line-segments to form an angle less than this value, given in degrees.
void setDisplaySamplePoints (bool __value)
 if true [default: off] display the points where the function has been sampled
void setMaxRefinementDegree (const unsigned int &__value)
 the maximum number of recursive refinement steps
void setMinPixelPerSample (double __value)
 create one sample at least every minPixelPerSample pixels
void setMinSamples (const unsigned int &__value)
 the minimum number of points to evaluate the function at
void setParameterColumn (int __value)
 if set, the values from this datatsore column are used for the parameters p1 , p2 , p3 , ... of the plot function
void setParameterColumn (size_t __value)
 if set, the values from this datatsore column are used for the parameters p1 , p2 , p3 , ... of the plot function
void setParamsV (double p1)
 set an internal parameter vector as function parameters, initialized with {p1}
void setParamsV (double p1, double p2)
 set an internal parameter vector as function parameters, initialized with {p1,p2}
void setParamsV (double p1, double p2, double p3)
 set an internal parameter vector as function parameters, initialized with {p1,p2,p3}
void setParamsV (double p1, double p2, double p3, double p4)
 set an internal parameter vector as function parameters, initialized with {p1,p2,p3,p4}
void setParamsV (double p1, double p2, double p3, double p4, double p5)
 set an internal parameter vector as function parameters, initialized with {p1,p2,p3,p4,p5}
void setSlopeTolerance (double __value)
 the tolerance for the difference of two subsequent slopes
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
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

This implements line plots where the data is taken from a user supplied function $ [x,y]=f(t) $ The function is evaluated on a user-specified range $ t \in \left[t_\text{min}, t_\text{max}\right] $.

See also
JKQTPXYFunctionLineGraphBase for details on the used plotting algorithm

The following image shows a Lissajou's fugure drawn with this function

The source code for this example is:

// here we define the C++-functor for [x,y]=f(t)
func1->setPlotFunctionFunctor([](double t) -> QPointF {
const double a=5;
const double b=4;
const double delta=JKQTPSTATISTICS_PI/4.0;
return QPointF(sin(a*t+delta), sin(b*t));
});
// and define the range over which to evaluate
void setTRange(double tmin_, double tmax_)
set the t-value range for
void setPlotFunctionFunctor(jkqtpParametricCurveFunctionType &&__value)
sets a functor to be plotted
JKQTPXYFunctionLineGraph(JKQTBasePlotter *parent=nullptr)
class constructor
#define JKQTPSTATISTICS_PI
Definition jkqtpmathtools.h:52

The source code for the same example, but using functions that also get a parameter vector:

// here we define the C++-functor for [x,y]=f(t)
func1->setPlotFunctionFunctor([](double t, const QVector<double>& params) -> QPointF {
return QPointF(3.0*sin(params[0]*t+params[2])+8.0, 3.0*sin(params[1]*t));
});
// now we define the 3 parameters of the function
// parameters are a, b, delta, as in the example above (in that order)
func1->setParamsV(5, 4, JKQTPSTATISTICS_PI/4.0);
// and define the range over which to evaluate
void setParamsV(double p1)
set an internal parameter vector as function parameters, initialized with {p1}
See also
Example (JKQTPlotter): Plotting Parametric Mathematical Curves as Line Graphs , JKQTPAdaptiveFunctionGraphEvaluator, JKQTPXFunctionLineGraph, JKQTPYFunctionLineGraph

Constructor & Destructor Documentation

◆ JKQTPXYFunctionLineGraph() [1/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( JKQTBasePlotter * parent = nullptr)

class constructor

◆ JKQTPXYFunctionLineGraph() [2/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( JKQTPlotter * parent)

class constructor

◆ JKQTPXYFunctionLineGraph() [3/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( const jkqtpSimpleParametricCurveFunctionType & f,
const QString & title,
double tmin_ = 0,
double tmax_ = 1,
JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPXYFunctionLineGraph() [4/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( const jkqtpSimpleParametricCurveFunctionType & f,
const QString & title,
double tmin_,
double tmax_,
JKQTPlotter * parent )

class constructor

◆ JKQTPXYFunctionLineGraph() [5/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( jkqtpSimpleParametricCurveFunctionType && f,
const QString & title,
double tmin_ = 0,
double tmax_ = 1,
JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPXYFunctionLineGraph() [6/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( jkqtpSimpleParametricCurveFunctionType && f,
const QString & title,
double tmin_,
double tmax_,
JKQTPlotter * parent )

class constructor

◆ JKQTPXYFunctionLineGraph() [7/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( const jkqtpParametricCurveFunctionType & f,
const QString & title,
double tmin_ = 0,
double tmax_ = 1,
JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPXYFunctionLineGraph() [8/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( const jkqtpParametricCurveFunctionType & f,
const QString & title,
double tmin_,
double tmax_,
JKQTPlotter * parent )

class constructor

◆ JKQTPXYFunctionLineGraph() [9/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( jkqtpParametricCurveFunctionType && f,
const QString & title,
double tmin_ = 0,
double tmax_ = 1,
JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPXYFunctionLineGraph() [10/10]

JKQTPXYFunctionLineGraph::JKQTPXYFunctionLineGraph ( jkqtpParametricCurveFunctionType && f,
const QString & title,
double tmin_,
double tmax_,
JKQTPlotter * parent )

class constructor

◆ ~JKQTPXYFunctionLineGraph()

virtual JKQTPXYFunctionLineGraph::~JKQTPXYFunctionLineGraph ( )
overridevirtual

class destructor

Member Function Documentation

◆ buildPlotFunctorSpec()

virtual PlotFunctorSpec JKQTPXYFunctionLineGraph::buildPlotFunctorSpec ( )
overrideprotectedvirtual

this function returns a functor that is used to generate the plot data in coordinate space, based on a range of the dependent variable in coordinate space. In addition it also contains the value range over which to evaluate the functor PlotFunctorSpec::func

This function has to be overridden by each class. Depending on the way that class defines the actual plot function, this function has to compose its return type in different ways. The three most common ways are:

  • plot a function $ f(x) $ i.e. the plot points will be $ [x, f(x)] $ and the value rage will be the x-axis range. This is implemented by e.g. JKQTPXFunctionLineGraph.
  • plot a function $ f(y) $ i.e. the plot points will be $ [f(y), y] $ and the value rage will be the y-axis range. This is implemented by e.g. JKQTPYFunctionLineGraph.
  • plot a function $ [x,y]=\vec{f}(t) $ i.e. the plot points will be $ \vec{f}(t) $ and the value rage will be a user-defined range for $ gt $. This is implemented by e.g. JKQTPXYFunctionLineGraph.

Implements JKQTPEvaluatedFunctionGraphBase.

◆ getPlotFunctionFunctor()

jkqtpParametricCurveFunctionType JKQTPXYFunctionLineGraph::getPlotFunctionFunctor ( ) const

the function to be plotted

See also
isSimplePlotFunction()

◆ getSimplePlotFunction()

jkqtpSimpleParametricCurveFunctionType JKQTPXYFunctionLineGraph::getSimplePlotFunction ( ) const

a simple function to be plotted, simplified form without parameters

See also
isSimplePlotFunction()

◆ isSimplePlotFunction()

bool JKQTPXYFunctionLineGraph::isSimplePlotFunction ( ) const

returns whether the plot function was defined as a jkqtpSimpleParametricCurveFunctionType (true ) or a jkqtpParametricCurveFunctionType (false )

◆ setPlotFunctionFunctor() [1/4]

void JKQTPXYFunctionLineGraph::setPlotFunctionFunctor ( const jkqtpParametricCurveFunctionType & __value)

sets a functor to be plotted

See also
plotFunction

◆ setPlotFunctionFunctor() [2/4]

void JKQTPXYFunctionLineGraph::setPlotFunctionFunctor ( const jkqtpSimpleParametricCurveFunctionType & __value)

sets a functor to be plotted

See also
simplePlotFunction

◆ setPlotFunctionFunctor() [3/4]

void JKQTPXYFunctionLineGraph::setPlotFunctionFunctor ( jkqtpParametricCurveFunctionType && __value)

sets a functor to be plotted

See also
plotFunction

◆ setPlotFunctionFunctor() [4/4]

void JKQTPXYFunctionLineGraph::setPlotFunctionFunctor ( jkqtpSimpleParametricCurveFunctionType && __value)

sets a functor to be plotted

See also
simplePlotFunction

Member Data Documentation

◆ plotFunction

jkqtpParametricCurveFunctionType JKQTPXYFunctionLineGraph::plotFunction
protected

the function to be plotted

◆ simplePlotFunction

jkqtpSimpleParametricCurveFunctionType JKQTPXYFunctionLineGraph::simplePlotFunction
protected

a simple function to be plotted, simplified form without parameters


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