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 filled curve plots where the area is filled between the plot line and the x-Axis. More...

#include <jkqtpfilledcurve.h>

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

 JKQTPFilledCurveXGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
 
 JKQTPFilledCurveXGraph (JKQTPlotter *parent)
 class constructor
 
void draw (JKQTPEnhancedPainter &painter) override
 plots the graph to the plotter object specified as parent
 
virtual bool getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
 get the maximum and minimum y-value of the graph
 
- Public Member Functions inherited from JKQTPFilledCurveGraphBase
 JKQTPFilledCurveGraphBase (JKQTBasePlotter *parent=nullptr)
 class constructor
 
virtual void drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
 plots a key marker inside the specified rectangle rect
 
JKQTPGraphFillStyleMixinfillStyleBelow ()
 if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above
 
const JKQTPGraphFillStyleMixinfillStyleBelow () const
 if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above
 
FillMode getFillMode () const
 specifies how the area of the graph is filles
 
virtual QColor getKeyLabelColor () const override
 returns the color to be used for the key label
 
- Public Member Functions inherited from JKQTPXYBaselineGraph
 JKQTPXYBaselineGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
 
double getBaseline () const
 baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
 
- Public Member Functions inherited from JKQTPXYGraph
 JKQTPXYGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
 
DataSortOrder getDataSortOrder () const
 if !=Unsorted, the data is sorted before plotting
 
virtual int getKeyColumn () const
 returns the column used as "key" for the current graph (typically this call getXColumn(), but for horizontal graphs like filled curves or barcharts it may call getYColumn() )
 
virtual int getValueColumn () const
 returns the column used as "value" for the current graph (typically this call getXColumn(), but for horizontal graphs like filled curves or barcharts it may call getYColumn() )
 
int getXColumn () const
 the column that contains the x-component of the datapoints
 
virtual bool getXMinMax (double &minx, double &maxx, double &smallestGreaterZero) override
 get the maximum and minimum x-value of the graph
 
int getYColumn () const
 the column that contains the y-component of the datapoints
 
virtual double hitTest (const QPointF &posSystem, QPointF *closestSpotSystem=nullptr, QString *label=nullptr, HitTestMode mode=HitTestXY) const override
 Implmentation of JKQTPPlotElement::hitTest(), which searches through all graph points defined by xColumn and yColumn and returns a general x/y-label, also taking into account possibly known errors to the graphs (if it is derived from JKQTPXGraphErrorData and/or JKQTPYGraphErrorData.
 
virtual bool usesColumn (int column) 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
 
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 JKQTPGraphLineAndFillStyleMixin
 JKQTPGraphLineAndFillStyleMixin ()
 class constructor
 
bool doDrawLine () const
 indicates whether to draw a line on the circumference of the described area (i.e. along the data points from xColumn and yColumn as well as xColumn and yColumn2 or not
 
bool doFillCurve () const
 indicates whether to fill the space between the curve and the x-axis
 
bool getDrawLine () const
 indicates whether to draw a line on the circumference of the described area (i.e. along the data points from xColumn and yColumn as well as xColumn and yColumn2 or not
 
bool getFillCurve () const
 indicates whether to fill the space between the curve and the x-axis
 
void setDrawLine (bool __value)
 indicates whether to draw a line on the circumference of the described area (i.e. along the data points from xColumn and yColumn as well as xColumn and yColumn2 or not
 
void setFillCurve (bool __value)
 indicates whether to fill the space between the curve and the x-axis
 
- Public Member Functions inherited from JKQTPGraphFillStyleMixin
 JKQTPGraphFillStyleMixin ()
 class constructor
 
virtual ~JKQTPGraphFillStyleMixin ()
 
QBrush getFillBrush (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
 constructs a QBrush from the graph fill styling properties
 
QColor getFillColor () const
 set the color of the graph filling
 
const QGradient * getFillGradient () const
 get the gradient object of the graph filling
 
Qt::BrushStyle getFillStyle () const
 get the fill style of the graph
 
QPixmap getFillTexture () const
 set the color of the graph filling
 
QImage getFillTextureImage () const
 set the color of the graph filling
 
void initFillStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
 initiaize the fill style (from the parent plotter)
 
void initFillStyleInvertedColor (JKQTPGraphFillStyleMixin *other)
 initiaize the fill style from another JKQTPGraphFillStyleMixin other by inverting its fill color
 
void setFillBrush (const QBrush &b)
 sets a fill brush (overwrites all internal properties!)
 
void setFillColor (const QColor &__value)
 set the color of the graph filling
 
void setFillColor (const QColor &__value, double alpha)
 set the color of the graph filling
 
void setFillGradient (const QGradient &__value)
 set the filling of the graph to a gradient and sets fill style to a gradient setting
 
void setFillStyle (Qt::BrushStyle __value)
 set the fill style of the graph
 
void setFillTexture (const QImage &__value)
 set the color of the graph filling and sets fill style to Qt::TexturePattern
 
void setFillTexture (const QPixmap &__value)
 set the color of the graph filling and sets fill style to Qt::TexturePattern
 
void setFillTransform (const QTransform &b)
 sets a fill transformation
 
- 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)
 

Additional Inherited Members

- Public Types inherited from JKQTPFilledCurveGraphBase
enum  FillMode {
  SingleFilling =0 ,
  TwoColorFilling =1
}
 specifies how the area below the graph is filled More...
 
- Public Types inherited from JKQTPXYGraph
enum  DataSortOrder {
  Unsorted =0 ,
  SortedX =1 ,
  SortedY =2
}
 specifies how to sort the data in a JKQTPXYGraph 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 JKQTPFilledCurveGraphBase
void setColor (QColor c)
 set line-color, fill color and symbol color
 
void setFillMode (JKQTPFilledCurveGraphBase::FillMode mode)
 specifies how the area of the graph is filles
 
- Public Slots inherited from JKQTPXYBaselineGraph
void setBaseline (double __value)
 baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
 
- Public Slots inherited from JKQTPXYGraph
void setDataSortOrder (DataSortOrder __value)
 if !=Unsorted, the data is sorted before plotting
 
void setDataSortOrder (int __value)
 if !=Unsorted, the data is sorted before plotting
 
virtual void setKeyColumn (int __value)
 sets the column used as "key" for the current graph (typically this call setXColumn(), but for horizontal graphs like filled curves or barcharts it may call setYColumn() )
 
virtual void setValueColumn (int __value)
 sets the column used as "value" for the current graph (typically this call setXColumn(), but for horizontal graphs like filled curves or barcharts it may call setYColumn() )
 
void setXColumn (int __value)
 the column that contains the x-component of the datapoints
 
void setXColumn (size_t __value)
 the column that contains the x-component of the datapoints
 
void setXYColumns (int xCol, int yCol)
 sets xColumn and yColumn at the same time
 
void setXYColumns (QPair< int, int > xyColPair)
 sets xColumn and yColumn at the same time
 
void setXYColumns (QPair< size_t, size_t > xyColPair)
 sets xColumn and yColumn at the same time
 
void setXYColumns (size_t xCol, size_t yCol)
 sets xColumn and yColumn at the same time
 
void setYColumn (int __value)
 the column that contains the y-component of the datapoints
 
void setYColumn (size_t __value)
 the column that contains the y-component of the datapoints
 
- 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 JKQTPXYBaselineGraph
bool getMinMaxWithBaseline (int dataColumn, double &minv, double &maxv, double &smallestGreaterZero)
 can be called by JKQTPGraph::getXMinMax() or JKQTPGraph::getYMinMax() calculates min/max/... for data from the given column, including the baseline
 
bool getMinMaxWithErrorsAndBaseline (int dataColumn, int errorColumn, int errorColumnLower, bool errorSymmetric, double &minv, double &maxv, double &smallestGreaterZero)
 can be called by JKQTPGraph::getXMinMax() or JKQTPGraph::getYMinMax() calculates min/max/... for data from the given column, including the baseline and an optional error
 
- Protected Member Functions inherited from JKQTPXYGraph
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 ()
 sorts data according to the specified criterion in sortData ... The result is stored as a index-map in sorted Indices
 
- 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 inherited from JKQTPFilledCurveGraphBase
FillMode m_fillMode
 specifies how the area of the graph is filles
 
JKQTPGraphFillStyleMixin m_fillStyleBelow
 if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above
 
- Protected Attributes inherited from JKQTPXYBaselineGraph
double m_baseline
 baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
 
- Protected Attributes inherited from JKQTPXYGraph
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
 
- Properties inherited from JKQTPXYBaselineGraph
double baseline
 
- Properties inherited from JKQTPXYGraph
DataSortOrder sortData
 if !=Unsorted, the data is sorted before plotting
 
int xColumn
 the column that contains the x-component of the datapoints
 
int yColumn
 the column that contains the y-component of the datapoints
 
- 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 JKQTPGraphLineAndFillStyleMixin
bool drawLine
 
bool fillCurve
 
- Properties inherited from JKQTPGraphFillStyleMixin
QColor fillColor
 
Qt::BrushStyle fillStyle
 
- Properties inherited from JKQTPGraphLineStyleMixin
QColor highlightingLineColor
 
QColor lineColor
 
Qt::PenStyle lineStyle
 
double lineWidth
 

Detailed Description

This implements filled curve plots where the area is filled between the plot line and the x-Axis.

See also
Example (JKQTPlotter): Filled Curve Plots

This class also provides the possibility to file above and below the baseline with different style. Such plots are sometimes called "Wiggle Plots" and are often used (in their black/white-variety for seismographic data plotting.

To generate such a plot, used JKQTPFilledCurveXGraph::setFillMode(JKQTPFilledCurveXGraph::FillMode::TwoColorFilling) and then use JKQTPFilledCurveXGraph::fillStyleBelow() to access the fill style for the area below the baseline and the default fill style to define the fill style above the baseline.

See also
Example (JKQTPlotter): Wiggle Plots

Constructor & Destructor Documentation

◆ JKQTPFilledCurveXGraph() [1/2]

JKQTPFilledCurveXGraph::JKQTPFilledCurveXGraph ( JKQTBasePlotter parent = nullptr)

class constructor

◆ JKQTPFilledCurveXGraph() [2/2]

JKQTPFilledCurveXGraph::JKQTPFilledCurveXGraph ( JKQTPlotter parent)

class constructor

Member Function Documentation

◆ draw()

void JKQTPFilledCurveXGraph::draw ( JKQTPEnhancedPainter painter)
overridevirtual

plots the graph to the plotter object specified as parent

Implements JKQTPPlotElement.

◆ getYMinMax()

virtual bool JKQTPFilledCurveXGraph::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!

Reimplemented from JKQTPXYGraph.

Reimplemented in JKQTPFilledCurveXErrorGraph.


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