Method MainWindow

examples/EmptyValues/mainwindow.cpp:24–45

using namespace KDChart;

MainWindow::MainWindow(QWidget *parent)
    : QWidget(parent)
{
    auto *chartLayout = new QHBoxLayout(this);
    m_chart = new Chart();
    chartLayout->addWidget(m_chart);

    m_model.loadFromCSV(":/data");

    // Set up the diagram
    m_bars = new BarDiagram();
    m_bars->setModel(&m_model);
    m_bars->addAxis(new CartesianAxis(m_bars));

    m_chart->coordinatePlane()->replaceDiagram(m_bars);

    auto *plane = dynamic_cast<CartesianCoordinatePlane *>(m_chart->coordinatePlane());
    Q_ASSERT(plane);
    // The values in the model are all zero, so set the size of the plane
    // to something that is non-zero manually
    plane->setVerticalRange(QPair<qreal, qreal>(-2.0, 2.0));
}