从变量可见性角度分析，Matlab程序运行过程中（以下不特别说明都是指在Matlab程序中），不同形式的变量可见范围源于于面向对象编程的概念.-variables can be seen from the point of view of analysis, Matlab procedures in the process (not refer specifically explain procedures in Matlab), different forms of variable can be seen in the area stems from the object-oriented programming concepts.