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https://github.com/jkriege2/JKQtPlotter.git
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183 lines
10 KiB
Plaintext
183 lines
10 KiB
Plaintext
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/*!
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\defgroup jkqtplotter_graphsgroup_classstructure Graphs
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\ingroup jkqtplotter_general
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\section jkqtplotter_graphsgroup_classstructure_basics Graph Class Structure
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Each type of graph is represented by another class, which has to be derived from JKQTPPlotElement. This class provides a basic virtual interface
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that allows JKQTPlotter to draw the graphs represented by them. This interface consists of these functions:
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- JKQTPPlotElement::draw() draws the graph onto a given JKQTPEnhancedPainter (derived from <a href="http://doc.qt.io/qt-5/qpainter.html">QPainter</a>)
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- JKQTPPlotElement::drawKeyMarker() draws the small marker image in the plot legend
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- JKQTPPlotElement::getKeyLabelColor() returns a color for the legend entry for the graph
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- JKQTPPlotElement::getXMinMax() returns the extent of the graph in x-direction (e.g. for auto-zooming)
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- JKQTPPlotElement::getYMinMax() returns the extent of the graph in Y-direction (e.g. for auto-zooming)
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.
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In addition to these basic functions, there are additional functions that can be used to draw something outside the actual plot rectangle.
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These are used to e.g. add color-scales to the side of the graph:
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- JKQTPPlotElement::getOutsideSize() returns the amount of space required outside the plot rectangle
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- JKQTPPlotElement::drawOutside() draws the elements outside the plot rectangle
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.
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Usually if writing a new graph, one would not directly
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derive from JKQTPPlotElement, but from a cass in it's hirarchy of children. These children already provide certain facilities for certain types of graphs.
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\dot
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digraph
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{
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// LATEX_PDF_SIZE
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bgcolor="transparent";
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edge [fontname="FreeSans",fontsize="10",labelfontname="FreeSans",labelfontsize="10"];
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node [fontname="FreeSans",fontsize="10"];
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rankdir="LR";
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{
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rank=same;
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JKQTPPlotElement [URL="\ref JKQTPPlotElement"];
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noteJKQTPPlotElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nelements drawn\nonto a plot"];
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JKQTPPlotElement -> noteJKQTPPlotElement [style=dashed,arrowhead=none];
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}
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{
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rank=same;
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JKQTPGraph [URL="\ref JKQTPPlotElement"];
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noteJKQTPGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nactual graphs"];
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JKQTPGraph -> noteJKQTPGraph [style=dashed,arrowhead=none];
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JKQTPGeometricPlotElement [URL="\ref JKQTPGeometricPlotElement"];
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noteJKQTPGeometricPlotElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nnon-graph elements,\ne.g. geometric elements"];
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JKQTPGeometricPlotElement -> noteJKQTPGeometricPlotElement [style=dashed,arrowhead=none];
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JKQTPPlotAnnotationElement [URL="\ref JKQTPPlotAnnotationElement"];
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noteJKQTPPlotAnnotationElement [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraph annotation elements,\ne.g. text, symbols, ranges ..."];
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JKQTPPlotAnnotationElement -> noteJKQTPPlotAnnotationElement [style=dashed,arrowhead=none];
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}
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{
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rank=same;
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JKQTPXYGraph [URL="\ref JKQTPXYGraph"]
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noteJKQTPXYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x,y) data pairs"];
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JKQTPXYGraph -> noteJKQTPXYGraph [style=dashed,arrowhead=none];
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JKQTPSingleColumnGraph [URL="\ref JKQTPSingleColumnGraph"]
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noteJKQTPSingleColumnGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on only\n a single column of data"];
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JKQTPSingleColumnGraph -> noteJKQTPSingleColumnGraph [style=dashed,arrowhead=none];
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JKQTPImageBase [URL="\ref JKQTPImageBase"]
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noteJKQTPImageBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \n2D images/matrices"];
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JKQTPImageBase -> noteJKQTPImageBase [style=dashed,arrowhead=none];
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}
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{
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rank=same;
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JKQTPXYYGraph [URL="\ref JKQTPXYYGraph"]
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noteJKQTPXYYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x, y1, y2) data tripels"];
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JKQTPXYYGraph -> noteJKQTPXYYGraph [style=dashed,arrowhead=none];
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JKQTPXXYGraph [URL="\ref JKQTPXXYGraph"]
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noteJKQTPXXYGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x1, x2, y) data tripels"];
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JKQTPXXYGraph -> noteJKQTPXXYGraph [style=dashed,arrowhead=none];
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JKQTPXYBaselineGraph [URL="\ref JKQTPXYBaselineGraph"]
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noteJJKQTPXYBaselineGraph [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs based on\n (x,y) data pairs and a baseline"];
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JKQTPXYBaselineGraph -> noteJJKQTPXYBaselineGraph [style=dashed,arrowhead=none];
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JKQTPEvaluatedFunctionGraphBase [URL="\ref JKQTPEvaluatedFunctionGraphBase"]
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noteJKQTPEvaluatedFunctionGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \ndynamically evaluated functions"];
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JKQTPEvaluatedFunctionGraphBase -> noteJKQTPEvaluatedFunctionGraphBase [style=dashed,arrowhead=none];
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JKQTPMathImageBase [URL="\ref JKQTPMathImageBase"]
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noteJKQTPMathImageBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ndata-based images"];
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JKQTPMathImageBase -> noteJKQTPMathImageBase [style=dashed,arrowhead=none];
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}
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{
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rank=same;
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JKQTPBarGraphBase [URL="\ref JKQTPBarGraphBase"]
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noteJKQTPBarGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nbarcharts"];
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JKQTPBarGraphBase -> noteJKQTPBarGraphBase [style=dashed,arrowhead=none];
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JKQTPFilledCurveGraphBase [URL="\ref JKQTPFilledCurveGraphBase"]
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noteJKQTPFilledCurveGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nfilled graphs"];
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JKQTPFilledCurveGraphBase -> noteJKQTPFilledCurveGraphBase [style=dashed,arrowhead=none];
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JKQTPImpulsesGraphBase [URL="\ref JKQTPImpulsesGraphBase"]
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noteJKQTPImpulsesGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nimpulse graphs"];
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JKQTPImpulsesGraphBase -> noteJKQTPImpulsesGraphBase [style=dashed,arrowhead=none];
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JKQTPSpecialLineGraphBase [URL="\ref JKQTPSpecialLineGraphBase"]
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noteJKQTPSpecialLineGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nspecial line graphs"];
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JKQTPSpecialLineGraphBase -> noteJKQTPSpecialLineGraphBase [style=dashed,arrowhead=none];
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JKQTPBoxplotGraphBase [URL="\ref JKQTPBoxplotGraphBase"]
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noteJKQTPBoxplotGraphBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na set of boxplots"];
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JKQTPBoxplotGraphBase -> noteJKQTPBoxplotGraphBase [style=dashed,arrowhead=none];
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JKQTPRangeBase [URL="\ref JKQTPRangeBase"];
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noteJKQTPRangeBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\nrange annotations"];
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JKQTPRangeBase -> noteJKQTPRangeBase [style=dashed,arrowhead=none];
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JKQTPBoxplotElementBase [URL="\ref JKQTPBoxplotElementBase"]
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noteJKQTPBoxplotElementBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na single boxplot"];
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JKQTPBoxplotElementBase -> noteJKQTPBoxplotElementBase [style=dashed,arrowhead=none];
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JKQTPViolinplotElementBase [URL="\ref JKQTPViolinplotElementBase"]
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noteJKQTPViolinplotElementBase [shape="note", color="lightyellow",style=filled,fontsize=8,label="base class for all\ngraphs that represent \na single violin plot"];
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JKQTPViolinplotElementBase -> noteJKQTPViolinplotElementBase [style=dashed,arrowhead=none];
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}
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JKQTPPlotElement -> JKQTPGraph
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JKQTPPlotElement -> JKQTPGeometricPlotElement
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JKQTPPlotElement -> JKQTPPlotAnnotationElement
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JKQTPPlotElement -> JKQTPRangeBase
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JKQTPPlotElement -> JKQTPBoxplotElementBase
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JKQTPPlotElement -> JKQTPViolinplotElementBase
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JKQTPGraph -> JKQTPXYGraph
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JKQTPGraph -> JKQTPSingleColumnGraph
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JKQTPGraph -> JKQTPImageBase -> JKQTPMathImageBase
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JKQTPGraph -> JKQTPEvaluatedFunctionGraphBase
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JKQTPGraph -> JKQTPBoxplotGraphBase
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JKQTPXYGraph -> JKQTPXYYGraph
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JKQTPXYGraph -> JKQTPXXYGraph
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JKQTPXYGraph -> JKQTPXYBaselineGraph
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JKQTPXYBaselineGraph -> JKQTPBarGraphBase
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JKQTPXYBaselineGraph -> JKQTPFilledCurveGraphBase
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JKQTPXYBaselineGraph -> JKQTPImpulsesGraphBase
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JKQTPXYBaselineGraph -> JKQTPSpecialLineGraphBase
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}
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\enddot
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\section jkqtplotter_graphsgroup_classstructure_mixins Mix-In Classes for Graphs
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\see \ref jkqtplotter_mixins
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In addition there are mix-in classes that are used via multiple inheritance
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that add additional features and properties to a graph. A prominent example are the classes for \ref jkqtplotter_basegraphserrors "error indicators".
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With these there are usually two variants of one type of graph: One without error indicators and one with error indicators, e.g.:
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- JKQTPXYLineGraph shows lines+symbols graphs made up from x/y-value pairs for each data point.
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- JKQTPXYLineErrorGraph extends JKQTPXYLineGraph with error indicator drawing/properties provided by JKQTPXYGraphErrors
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.
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This approach allows to keep interfaces and appearance recognizeable over different graph classes and locates the source code
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for a feature like error indicators in a single/in few class(es).
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Another example of such a class is JKQTPColorPaletteStyleAndToolsMixin, which provides functions that allow to use color palettes. It is
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mainly used for the \ref jkqtplotter_imagelots "Image/Matrix graphs", but also by e.g. JKQTPXYParametrizedScatterGraph.
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*/
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