LineChart Example

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->setTitle("Simple line chart example");

Then we create a QChartView object with QChart as a parameter. This way we don't need to create a QGraphicsView scene ourselves. We also set the Antialiasing on to have the rendered lines look nicer.

    QChartView *chartView = new QChartView(chart);

The chart is ready to be shown.

    QMainWindow window;
    window.resize(400, 300);;


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