c++ - QT QCharts添加和删除系列

我应该如何添加和删除qchart系列？

QChart的主要问题是QChart如何存储QAxis和QSeries，QSeries本身是指QAxis。所有这些对象之间都是紧密连接的。

因此，而不是像这样的伪代码:

 void someclass::set_series(QLineSeries*someQLineSeries){
 somechart->removeAllSeries();
 somechart->removeAllAxis();
 somechart->addSeries(someQLineSeries);
 }

我应该使用:
(zlineseries另外还存储2个指向其轴的指针)

void zhplotview::attach_dt_series(ZLineSeries *series)
if(chart)
{

    qDebug()<<"NOT DELETED CHART";
    if(viewer)
    {
        qDebug()<<"NOT DELETED VIEWER";
        qDebug()<<"Okay. Try to clear old links and create chart again";

        //let chart have 1 series
        auto slist=chart->series();
        ZLineSeries *old_series=dynamic_cast<ZLineSeries*>(slist.at(0));

        old_series->detachAxis(old_series->axis_x);
        old_series->detachAxis(old_series->axis_y);

        chart->removeAxis(old_series->axis_x);
        chart->removeAxis(old_series->axis_y);
        vbl->removeWidget(viewer);

        chart->removeSeries(old_series);

        disconnect(viewer);
        disconnect(chart);

        delete chart;
        delete viewer;

    }
    else
    {
        qDebug()<<"chart is 0, but viewer not";
        return;
    }
}

chart=new QChart();
chart->addSeries(series);
chart->addAxis(series->axis_x,Qt::AlignBottom);
chart->addAxis(series->axis_y,Qt::AlignLeft);
series->attachAxis(series->axis_x);
series->attachAxis(series->axis_y);

viewer=new QZChartView(chart,this);
vbl->addWidget(viewer);

最佳答案

我知道已经过了三年，但是我为此使用了一些解决方法，也许对某人来说很有趣。

在每个增量上，我都会生成一个新图表，并替换旧图表。为了足够快，我将一些预先计算的数据保留在堆栈中。

关于c++ - QT QCharts添加和删除系列，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39171173/