----------------------- copy starting from the next line -----------------------
------------------ copy up to and including the previous line ------------------
Listed 100 out of 200000 observations
Use the count() option to list more
firmid为企业代码,字符型变量,我想控制企业固定效应,需要转变为数值型变量,但是由于数据200+万,所以encode命令不能用。
请问各位大神,还有其他的办法吗?谢谢各位!!