To create a line chart, a QLineSeries instance is needed. Let's create one.
QLineSeries *series = new QLineSeries();
Then we add data to the series. We can use the append() member function or use the stream operator.
series->append(0, 6); series->append(2, 4); series->append(3, 8); series->append(7, 4); series->append(10, 5); *series << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3) << QPointF(20, 2);
To present the data on the chart we need a QChart instance. We add the series to it, create the default axes, and set the title of the chart.
QChart *chart = new QChart(); chart->legend()->hide(); chart->addSeries(series); chart->createDefaultAxes(); chart->setTitle("Simple line chart example");
QChartView *chartView = new QChartView(chart); chartView->setRenderHint(QPainter::Antialiasing);
The chart is ready to be shown.
QMainWindow window; window.setCentralWidget(chartView); window.resize(400, 300); window.show();
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