gridsdisplay是一个MATLAB程序，它可以读取两个用2D或3D格式定义网格或稀疏网格的ASCII文件。第一个网格是用空心的蓝色点绘制的，而第二个网格则是用实心的红点绘制的。图像会自动保存到PNG文件中。((GRIDS_DISPLAY is a MATLAB program which can read two ASCII files defining grids or sparse grids in 2D or 3D. The first grid is plotted "lightly", in hollow blue dots, while the second is plotted with solid red dots. The image is automatically saved to a PNG file.))