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datetimeaxis example vertical axis format set to integers
Marek Rosa -
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1 1 /****************************************************************************
2 2 **
3 3 ** Copyright (C) 2012 Digia Plc
4 4 ** All rights reserved.
5 5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 6 **
7 7 ** This file is part of the Qt Commercial Charts Add-on.
8 8 **
9 9 ** $QT_BEGIN_LICENSE$
10 10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 11 ** accordance with the Qt Commercial License Agreement provided with the
12 12 ** Software or, alternatively, in accordance with the terms contained in
13 13 ** a written agreement between you and Digia.
14 14 **
15 15 ** If you have questions regarding the use of this file, please use
16 16 ** contact form at http://qt.digia.com
17 17 ** $QT_END_LICENSE$
18 18 **
19 19 ****************************************************************************/
20 20
21 21 #include <QApplication>
22 22 #include <QMainWindow>
23 23 #include <QChartView>
24 24 #include <QLineSeries>
25 25 #include <QDateTime>
26 26 #include <QDateTimeAxis>
27 27 #include <QFile>
28 28 #include <QTextStream>
29 29 #include <QDebug>
30 30 #include <QValueAxis>
31 31
32 32 QTCOMMERCIALCHART_USE_NAMESPACE
33 33
34 34 int main(int argc, char *argv[])
35 35 {
36 36 QApplication a(argc, argv);
37 37 qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
38 38
39 39 //![1]
40 40 QLineSeries *series = new QLineSeries();
41 41 //![1]
42 42
43 43 //![2]
44 44 // data from http://www.swpc.noaa.gov/ftpdir/weekly/RecentIndices.txt
45 45 // http://www.swpc.noaa.gov/ftpdir/weekly/README
46 46 // http://www.weather.gov/disclaimer
47 47 QFile sunSpots(":sun");
48 48 if (!sunSpots.open(QIODevice::ReadOnly | QIODevice::Text)) {
49 49 return 1;
50 50 }
51 51
52 52 QTextStream stream(&sunSpots);
53 53 while (!stream.atEnd()) {
54 54 QString line = stream.readLine();
55 55 if (line.startsWith("#") || line.startsWith(":"))
56 56 continue;
57 57 QStringList values = line.split(" ", QString::SkipEmptyParts);
58 58 QDateTime momentInTime;
59 59 momentInTime.setDate(QDate(values[0].toInt(), values[1].toInt() , 15));
60 60 series->append(momentInTime.toMSecsSinceEpoch(), values[2].toDouble());
61 61 }
62 62 sunSpots.close();
63 63 //![2]
64 64
65 65 //![3]
66 66 QChart *chart = new QChart();
67 67 chart->addSeries(series);
68 68 chart->legend()->hide();
69 chart->createDefaultAxes();
70 69 chart->setTitle("Sunspots count (by Space Weather Prediction Center)");
71 70 //![3]
72 71
73 72 //![4]
74 73 QDateTimeAxis *axisX = new QDateTimeAxis;
75 74 axisX->setTickCount(10);
76 75 axisX->setFormat("MMM yyyy");
77 76 axisX->setTitleText("Date");
78 chart->setAxisX(axisX, series);
79 chart->axisY(series)->setTitleText("Sunspots count");
77 chart->addAxis(axisX, Qt::AlignBottom);
78 series->attachAxis(axisX);
79
80 QValueAxis *axisY = new QValueAxis;
81 axisY->setLabelFormat("%i");
82 axisY->setTitleText("Sunspots count");
83 chart->addAxis(axisY, Qt::AlignLeft);
84 series->attachAxis(axisY);
80 85 //![4]
81 86
82 87 //![5]
83 88 QChartView *chartView = new QChartView(chart);
84 89 chartView->setRenderHint(QPainter::Antialiasing);
85 90 //![5]
86 91
87 92 //![6]
88 93 QMainWindow window;
89 94 window.setCentralWidget(chartView);
90 95 window.resize(800, 600);
91 96 window.show();
92 97 //![6]
93 98
94 99 return a.exec();
95 100 }
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