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https://github.com/jkriege2/JKQtPlotter.git
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78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
/** \example barchart_errorbars.cpp
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* Shows how to draw Barcharts with errorbars in a JKQTPlotter
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*
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* \ref JKQTPlotterBarchartsErrorBars
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*/
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#include "jkqtpexampleapplication.h"
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#include <QApplication>
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#include "jkqtplotter/jkqtplotter.h"
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#include "jkqtplotter/graphs/jkqtpscatter.h"
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#include "jkqtplotter/graphs/jkqtpbarchart.h"
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#include "jkqtpexampleapplication.h"
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#include "jkqtcommon/jkqtpmathtools.h"
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template <class TCHART>
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void doExample(JKQTPlotter& plot, const QString& title)
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{
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// 1. create a plotter window and get a pointer to the internal datastore (for convenience)
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JKQTPDatastore* ds=plot.getDatastore();
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// 2. now we create three columns for key and value
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size_t columnK=ds->addLinearColumn(6, 0.4*JKQTPSTATISTICS_PI, 2.2*JKQTPSTATISTICS_PI,"k");
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size_t columnV=ds->addColumnCalculatedFromColumn(columnK, [](double x) { return cos(x); }, "v");
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size_t columnE=ds->addColumnCalculatedFromColumn(columnK, [](double x) { return 0.05+0.06*(1.0+sin(x)); }, "error");
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// 3. create a graph in the plot, which plots the dataset with symmetric:
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TCHART* graph1=new TCHART(&plot);
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graph1->setKeyColumn(columnK);
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graph1->setValueColumn(columnV);
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graph1->setBarErrorColumn(columnE);
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// set error indicator style
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graph1->setBarErrorStyle(JKQTPErrorBars);
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graph1->setTitle(QObject::tr("JKQTPErrorBars"));
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plot.addGraph(graph1);
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// 4. create a second graph in the plot, which plots the second dataset with outer error bars only:
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TCHART* graph2=new TCHART(&plot);
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graph2->setKeyColumn(columnK);
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graph2->setValueColumn(columnV);
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graph2->setBarErrorColumn(columnE);
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// set error indicator style
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graph2->setBarErrorStyle(JKQTPErrorHalfBarsOutwards);
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graph2->setTitle(QObject::tr("JKQTPErrorHalfBarsOutwards"));
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plot.addGraph(graph2);
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// 5. now we set the graphs, so they are plotted side-by-side
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// This function searches all JKQTPBarHorizontalGraph in the current
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// plot and sets their shift/scale so they form a nice plot with
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// side-by-side groups
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graph1->autoscaleBarWidthAndShift(0.9, 0.9);
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// 6 autoscale the plot so the graph is contained
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plot.zoomToFit();
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// 7. show plotter and make it a decent size
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plot.getPlotter()->setKeyPosition(JKQTPKeyInsideTopLeft);
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plot.setWindowTitle(title);
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plot.show();
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plot.resize(400,400);
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}
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int main(int argc, char* argv[])
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{
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JKQTPAppSettingController highDPIController(argc,argv);
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JKQTPExampleApplication app(argc, argv);
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JKQTPlotter plotV, plotH;
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doExample<JKQTPBarVerticalErrorGraph>(plotV, "1: JKQTPBarVerticalErrorGraph");
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doExample<JKQTPBarHorizontalErrorGraph>(plotH, "2: JKQTPBarHorizontalErrorGraph");
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return app.exec();
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}
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