Qt 5.7 | Qt Charts | Box and Whiskers Example | main.cpp Example File

Qt 5.7.1 Reference Documentation

# main.cpp Example File

boxplotchart/main.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt Charts module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:GPL$
      ** Commercial License Usage
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      ** Alternatively, this file may be used under the terms of the GNU
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      ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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      #include <QtWidgets/QApplication>
      #include <QtWidgets/QMainWindow>
      #include <QtCharts/QChartView>
      #include <QtCharts/QBoxPlotSeries>
      #include <QtCharts/QBoxSet>
      #include <QtCharts/QLegend>
      #include <QtCharts/QBarCategoryAxis>
      #include <QtCore/QFile>

      #include "boxdatareader.h"

      QT_CHARTS_USE_NAMESPACE

      int main(int argc, char *argv[])
      {
          QApplication a(argc, argv);

          QBoxPlotSeries *acmeSeries = new QBoxPlotSeries();
          acmeSeries->setName("Acme Ltd");

          QBoxPlotSeries *boxWhiskSeries = new QBoxPlotSeries();
          boxWhiskSeries->setName("BoxWhisk Inc");

          QFile acmeData(":acme");
          if (!acmeData.open(QIODevice::ReadOnly | QIODevice::Text))
              return 1;

          BoxDataReader dataReader(&acmeData);
          while (!dataReader.atEnd()) {
              QBoxSet *set = dataReader.readBox();
              if (set)
                  acmeSeries->append(set);
          }

          QFile boxwhiskData(":boxwhisk");
          if (!boxwhiskData.open(QIODevice::ReadOnly | QIODevice::Text))
              return 1;

          dataReader.readFile(&boxwhiskData);
          while (!dataReader.atEnd()) {
              QBoxSet *set = dataReader.readBox();
              if (set)
                  boxWhiskSeries->append(set);
          }

          QChart *chart = new QChart();
          chart->addSeries(acmeSeries);
          chart->addSeries(boxWhiskSeries);
          chart->setTitle("Acme Ltd and BoxWhisk Inc share deviation in 2012");
          chart->setAnimationOptions(QChart::SeriesAnimations);

          chart->createDefaultAxes();
          chart->axisY()->setMin(15.0);
          chart->axisY()->setMax(34.0);

          chart->legend()->setVisible(true);
          chart->legend()->setAlignment(Qt::AlignBottom);

          QChartView *chartView = new QChartView(chart);
          chartView->setRenderHint(QPainter::Antialiasing);

          QMainWindow window;
          window.setCentralWidget(chartView);
          window.resize(800, 600);
          window.show();

          return a.exec();
      }