产生正弦波 的matlab源程序 小弟第一次做的程序 不知对大家有用吗?-generated sine wave of Matlab source younger the first time in the process we do not know right useful?

用matlab编的半波整流的程序，可以对正弦波进行整流-using Matlab series of the half-wave rectifier procedure, a pair of sine wave rectifier for