nsg,一个jave程序，用于ns-2脚本自动生成，图形化界面很容易上手-nsg, a jave program for the ns-2 scr ipt automatically generated, graphical interface is very easy to use

NSG is a java program that generate NS2 wireless based network.. it only support IPv4 network and able to generate TCL scr ipt basd on environment designed by user.