QChart *createChart(const DataTable &table) { QChart *chart = new QChart(); chart->setTitle("StackedBar: BarCateogry X, Log Y"); QString name("Series "); QStackedBarSeries *series = new QStackedBarSeries(chart); QLogValueAxis *logvalueaxis = new QLogValueAxis(); logvalueaxis->setBase(2); QBarCategoryAxis *barcategory = new QBarCategoryAxis(); for (int i(0); i < table.count(); i++) { QBarSet *set = new QBarSet("Bar set " + QString::number(i)); foreach (Data data, table[i]) *set << data.first.y(); series->append(set); } chart->addSeries(series); int count = series->barSets().first()->count(); for (int i = 0; i < count; i++) { barcategory->append("BarSet " + QString::number(i)); } chart->setAxisY(logvalueaxis, series); chart->setAxisX(barcategory, series); return chart; }
QT_CHARTS_USE_NAMESPACE int main(int argc, char *argv[]) { QApplication a(argc, argv); //![1] QBarSet *set0 = new QBarSet("Jane"); QBarSet *set1 = new QBarSet("John"); QBarSet *set2 = new QBarSet("Axel"); QBarSet *set3 = new QBarSet("Mary"); QBarSet *set4 = new QBarSet("Samantha"); *set0 << 1 << 2 << 3 << 4 << 5 << 6; *set1 << 5 << 0 << 0 << 4 << 0 << 7; *set2 << 3 << 5 << 8 << 13 << 8 << 5; *set3 << 5 << 6 << 7 << 3 << 4 << 5; *set4 << 9 << 7 << 5 << 3 << 1 << 2; //![1] //![2] QStackedBarSeries *series = new QStackedBarSeries(); series->append(set0); series->append(set1); series->append(set2); series->append(set3); series->append(set4); //![2] //![3] QChart *chart = new QChart(); chart->addSeries(series); chart->setTitle("Simple stackedbarchart example"); chart->setAnimationOptions(QChart::SeriesAnimations); //![3] //![4] QStringList categories; categories << "Jan" << "Feb" << "Mar" << "Apr" << "May" << "Jun"; QBarCategoryAxis *axis = new QBarCategoryAxis(); axis->append(categories); chart->createDefaultAxes(); chart->setAxisX(axis, series); //![4] //![5] chart->legend()->setVisible(true); chart->legend()->setAlignment(Qt::AlignBottom); //![5] //![6] QChartView *chartView = new QChartView(chart); chartView->setRenderHint(QPainter::Antialiasing); //![6] //![7] QMainWindow window; window.setCentralWidget(chartView); window.resize(420, 300); window.show(); //![7] return a.exec(); }