PCL:PCL_PCLPlotter类,绘制折线图

//头文件：#include <pcl/visualization/pcl_plotter.h>
	visualization::PCLPlotter *plot_(new visualization::PCLPlotter("Elevation and Point Number Breakdown Map"));
	plot_->setBackgroundColor(1, 1, 1);
	plot_->setTitle("Elevation and Point Number Breakdown Map");
	plot_->setXTitle("Elevation");
	plot_->setYTitle("Point number");
	plot_->addPlotData(X, Y, "display", vtkChart::LINE);//X,Y均为double型的向量
	plot_->plot();//绘制曲线