Qt-QCustomPlot(画坐标系统)的简单操作

一、QCustomPlot的简单配置

　　 /* 清除所有曲线 */
    ui->curve->clearGraphs();
    /* 设置背景色 */
    ui->curve->setBackground(QBrush(QColor(255,255,255,0)));

    #if 0
    /* 设置右上角图标可见 */
    ui->curve->legend->setVisible(true);
    /* 设置右上角图标字体 */
    ui->curve->legend->setFont(QFont("Helvetica", 9));
    /* 设置右上角图标背景色 */
    ui->curve->legend->setBrush(QColor(255,255,255,0));
    #endif
    /* 设置坐标轴标题 */
    ui->curve->xAxis->setLabel("时间(min)");
    ui->curve->xAxis->setLabelFont(QFont("Ubuntu",12));
    ui->curve->yAxis->setLabel("温度(℃)");
    ui->curve->yAxis->setLabelFont(QFont("Ubuntu",12));

    /* 设置坐标轴标题颜色 */
    ui->curve->xAxis->setLabelColor(Qt::white);
    ui->curve->yAxis->setLabelColor(Qt::white);
    /* 设置坐标轴数字颜色 */
    ui->curve->xAxis->setTickLabelColor(Qt::white);
    ui->curve->yAxis->setTickLabelColor(Qt::white);
    /* 设置坐标轴颜色和线粗 */
    ui->curve->xAxis->setBasePen(QPen(QColor(255,128,4), 2));
    ui->curve->yAxis->setBasePen(QPen(QColor(255,128,4), 2));

    /* 设置坐标轴范围 */
    QSharedPointer<QCPAxisTickerTime> timeTicker(new QCPAxisTickerTime);
    timeTicker->setTimeFormat("%m");
    ui->curve->xAxis->setTicker(timeTicker);
    /* 设置x轴范围是1-3601s，即60分钟 */
    ui->curve->xAxis->setRange(1, 3600);
    /* 设置x轴分割线向外和分割线高度 */
    ui->curve->xAxis->setTickLength(0, 5);
    ui->curve->xAxis->setSubTickLength(0, 3);
    /* 设置x轴分割线的颜色和线粗 */
    ui->curve->xAxis->setTickPen(QPen(QColor(255,128,4),2));
    ui->curve->xAxis->setSubTickPen(QPen(QColor(255,128,4),2));

    /* 设置y轴范围 */
    ui->curve->yAxis->setRange(0, 400);
    /* 设置x轴分割线向外和分割线高度 */
    ui->curve->yAxis->setTickLength(0, 5);
    ui->curve->yAxis->setSubTickLength(0, 0);
    /* 设置y轴分割线的颜色和线粗 */
    ui->curve->yAxis->setTickPen(QPen(QColor(255,128,4),2));
    ui->curve->yAxis->setSubTickPen(QPen(QColor(255,128,4),2));

    /* 设置网格线的颜色为透明 */
    ui->curve->xAxis->grid()->setPen(QPen(QColor(255,255,255,0)));
    ui->curve->yAxis->grid()->setPen(QPen(QColor(255,255,255,0)));

    /* 添加图形 */
    ui->curve->addGraph();
    /* 设置画笔颜色 */
    ui->curve->graph(0)->setPen(QPen(Qt::green));
    /* 设置画刷 曲线和x轴围成面积的颜色  */
    //ui->curve->graph(0)->setBrush(QBrush(QColor(255,0,255)));
    /* 设置右上角图形标注名称 */
    ui->curve->graph(0)->setName("温度");
    for(int i = 0; i < 3600; i++)
    {
        /* 传入数据*/
        ui->curve->graph(0)->addData(i, startFireValue);
    }

    /* 添加图形 */
    ui->curve->addGraph();
    ui->curve->graph(1)->setPen(QPen(Qt::red, 2));
    ui->curve->graph(1)->setName("升温曲线");
    /* 刷新曲线 */
    ui->curve->replot();

 二、更多用法相关链接

https://www.qcustomplot.com/