int main()
{
    //準備一行51列的數據位置
    Mat data_x(1, 51, CV_64F);
    Mat data_y(1, 51, CV_64F);

    //填充模擬數據
    for (int i = 0; i < data_x.cols; i++) {
        double x                = (i - data_x.cols / 2);
        data_x.at<double>(0, i) = x;
        data_y.at<double>(0, i) = x * x * x;
    }

    std::cout << "data_x : " << data_x << std::endl;
    std::cout << "data_y : " << data_y << std::endl;

    Mat plot_result;

    Ptr<plot::Plot2d> plot=plot::Plot2d::create(data_x,data_y);
    plot->render(plot_result);
    imshow("plot 2d data in default way!",plot_result);
    //自定義參數
       plot->setShowText(false);
       plot->setShowGrid(false);
       plot->setPlotBackgroundColor(Scalar(255, 200, 200));
       plot->setPlotLineColor(Scalar(255, 0, 0));
       plot->setPlotLineWidth(2);
       plot->setInvertOrientation(true);//左右顛倒繪制
       plot->render(plot_result);//根據參數進行渲染

       imshow("The plot rendered with some of custom visualization options", plot_result);
       waitKey();
    return 0;
}