说明：  常用画图函数及其例子 数据图视化能使人们用视觉器官直接感受到数据的许多内在本质 。因此，数据可视化是人们研究科学、认识世界所不可缺少的手段。MATLAB不仅数值计算方面是一个优秀的科技应用软件， 在数据可视化方面也具有上佳表现。
(common drawing functions and data plans, as examples of people will use visual data organ directly felt in many inner essence. Therefore, data visualization is people study science, understanding of the world are indispensable tools. MATLAB is not only numerical calculation is an excellent application of technology in software and data visualization also have good performance.)