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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Enterprise Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets/QApplication>
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#include <QtWidgets/QMainWindow>
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#include <QtCharts/QChartView>
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#include <QtCharts/QLineSeries>
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#include <QtCore/QDateTime>
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#include <QtCharts/QDateTimeAxis>
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#include <QtCore/QFile>
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#include <QtCore/QTextStream>
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#include <QtCore/QDebug>
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#include <QtCharts/QValueAxis>
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QT_CHARTS_USE_NAMESPACE
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
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//![1]
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QLineSeries *series = new QLineSeries();
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//![1]
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//![2]
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// data from http://www.swpc.noaa.gov/ftpdir/weekly/RecentIndices.txt
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// http://www.swpc.noaa.gov/ftpdir/weekly/README
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// http://www.weather.gov/disclaimer
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QFile sunSpots(":sun");
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if (!sunSpots.open(QIODevice::ReadOnly | QIODevice::Text)) {
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return 1;
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}
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QTextStream stream(&sunSpots);
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while (!stream.atEnd()) {
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QString line = stream.readLine();
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if (line.startsWith("#") || line.startsWith(":"))
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continue;
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QStringList values = line.split(" ", QString::SkipEmptyParts);
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QDateTime momentInTime;
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momentInTime.setDate(QDate(values[0].toInt(), values[1].toInt() , 15));
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series->append(momentInTime.toMSecsSinceEpoch(), values[2].toDouble());
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}
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sunSpots.close();
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//![2]
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//![3]
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QChart *chart = new QChart();
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chart->addSeries(series);
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chart->legend()->hide();
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chart->setTitle("Sunspots count (by Space Weather Prediction Center)");
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//![3]
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//![4]
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QDateTimeAxis *axisX = new QDateTimeAxis;
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axisX->setTickCount(10);
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axisX->setFormat("MMM yyyy");
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axisX->setTitleText("Date");
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chart->addAxis(axisX, Qt::AlignBottom);
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series->attachAxis(axisX);
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QValueAxis *axisY = new QValueAxis;
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axisY->setLabelFormat("%i");
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axisY->setTitleText("Sunspots count");
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chart->addAxis(axisY, Qt::AlignLeft);
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series->attachAxis(axisY);
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//![4]
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//![5]
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QChartView *chartView = new QChartView(chart);
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chartView->setRenderHint(QPainter::Antialiasing);
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//![5]
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//![6]
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QMainWindow window;
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window.setCentralWidget(chartView);
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window.resize(820, 600);
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window.show();
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//![6]
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return a.exec();
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}
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