// Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only #include #include #include #include #include #include QT_USE_NAMESPACE int main(int argc, char *argv[]) { QApplication app(argc, argv); //![1] QLineSeries *series = new QLineSeries(); *series << QPointF(1.0, 1.0) << QPointF(2.0, 73.0) << QPointF(3.0, 268.0) << QPointF(4.0, 17.0) << QPointF(5.0, 4325.0) << QPointF(6.0, 723.0); //![1] //![2] QChart *chart = new QChart(); chart->addSeries(series); chart->legend()->hide(); chart->setTitle("Logarithmic axis example"); //![2] //![3] QValueAxis *axisX = new QValueAxis(); axisX->setTitleText("Data point"); axisX->setLabelFormat("%i"); axisX->setTickCount(series->count()); chart->addAxis(axisX, Qt::AlignBottom); series->attachAxis(axisX); QLogValueAxis *axisY = new QLogValueAxis(); axisY->setTitleText("Values"); axisY->setLabelFormat("%g"); axisY->setBase(8.0); axisY->setMinorTickCount(-1); chart->addAxis(axisY, Qt::AlignLeft); series->attachAxis(axisY); //![3] //![4] QChartView *chartView = new QChartView(chart); chartView->setRenderHint(QPainter::Antialiasing); //![4] //![5] QMainWindow window; window.setCentralWidget(chartView); window.resize(800, 600); window.show(); //![5] return app.exec(); }