QLineSeries QChartView 生成折线

Posted zhangxuan

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了QLineSeries QChartView 生成折线相关的知识,希望对你有一定的参考价值。

效果图

技术分享图片

 

 

    // 创建折线上点的序列
    QLineSeries *splineSeries = new QLineSeries();
    //QSplineSeries *splineSeries = new QSplineSeries();
    splineSeries->setName("spline");

    splineSeries->append(0, 6);
    splineSeries->append(2, 4);
    splineSeries->append(3, 8);
    splineSeries->append(7, 4);
    splineSeries->append(10, 5);
    *splineSeries << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3) << QPointF(20, 2);

    // 标记点
    QScatterSeries *scatterSeries = new QScatterSeries();
    scatterSeries->setPointLabelsFormat("@yPoint");
    scatterSeries->setPointLabelsVisible();
    scatterSeries->setMarkerSize(8);
    scatterSeries->append(0, 6);
    scatterSeries->append(2, 4);
    scatterSeries->append(3, 8);
    scatterSeries->append(7, 4);
    scatterSeries->append(10, 5);
    *scatterSeries << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3) << QPointF(20, 2);

//    //区域填充
//    QAreaSeries *series = new QAreaSeries(splineSeries);
//    series->setName("Batman");
//    QPen pen(0x059605);
//    pen.setWidth(3);
//    series->setPen(pen);

    // 使用点的序列创建图标
    QChart *chart = new QChart();
    chart->legend()->hide();
    chart->addSeries(splineSeries);
    chart->addSeries(scatterSeries);
    //chart->addSeries(series);
    chart->createDefaultAxes();
    chart->axisY()->setRange(0, 10);

//    //X轴下标
//    QStringList categories;
//    categories << "Jan" << "Feb" << "Mar" << "Apr" << "May" ;
//    QBarCategoryAxis *axisX = new QBarCategoryAxis();
//    axisX->append(categories);
//    chart->setAxisX(axisX, scatterSeries);



    QChartView *chartView = new QChartView(chart);
    chartView->setRenderHint(QPainter::Antialiasing);


    MainWindow w;
    w.setCentralWidget(chartView);
    w.show();

 

以上是关于QLineSeries QChartView 生成折线的主要内容,如果未能解决你的问题,请参考以下文章

QLineSeries和 QBarSeries的用法

QtCharts模块勾画折线和曲线图

如何将qlineseries赋值给另一个qlineseries

扩展 QChartView

Qt的QChartView实现缩放和放大功能

如何在 Qt Designer 中安装 QChartView?