Qt实现简单折线图表_C/C++

Qt实现简单折线图表

2022-12-24 15:44虾球xz C/C++

这篇文章主要为大家详细介绍了Qt实现简单折线图表，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

本文实例为大家分享了Qt实现简单折线图表的具体代码，供大家参考，具体内容如下

main.cpp

				?

									#include <QApplication>

									#include <QChartView>

									#include <QLineSeries>

									#include <QDebug>

									QVector<QPointF> convertLine2Step(const QVector<QPointF> &points)

									{

									    QVector<QPointF> s;

									    s << points.at(0);

									    int x, y;

									    for (int i = 1; i < points.count(); i++)

									    {

									        x = points.at(i).x();

									        y = points.at(i - 1).y();

									        s << QPointF(x, y);

									        s << points.at(i);

									    }

									    return s;

									}

									int main(int argc, char *argv[])

									{

									    QApplication a(argc, argv);

									    QtCharts::QChartView w;

									    w.setRenderHint(QPainter::Antialiasing);

									    QtCharts::QChart chart;

									    chart.legend()->setVisible(true);

									    w.setChart(&chart);

									    QtCharts::QLineSeries *series = new QtCharts::QLineSeries;

									    QVector<QPointF> points;

									    points << QPointF(2, 4);

									    points << QPointF(3, 8);

									    points << QPointF(7, 4);

									    points << QPointF(10, 5);

									    points << QPointF(11, 1) << QPointF(13, 3) << QPointF(17, 6) << QPointF(18, 3)

									           << QPointF(20, 2);

									    *series << points.toList();

									    series->setName("original");

									    QtCharts::QLineSeries *stepSerie = new QtCharts::QLineSeries;

									    *stepSerie << convertLine2Step(points).toList();

									    stepSerie->setName("step");

									    chart.addSeries(series);

									    chart.addSeries(stepSerie);

									    chart.createDefaultAxes();

									    chart.setTitle("Simple line chart example");

									    w.show();

									    return a.exec();

									}