摘要:
//清除内存 clear //设置5个样本 set obs 5 //增加变量v1,都是this is the day gen v1 = "this is the my is day" //增加新变量,v1_replace,其值是替换v1中的第一个is为X gen v1_replace = subin 阅读全文
摘要:
local sj=subinstr(subinstr("`c(current_time)'",":","",.)," ","",.) local wjma="`sj'" set seed `wjma' clear local shu= int(100*runiform() ) // local xm 阅读全文
摘要:
local sj=subinstr(subinstr("`c(current_time)'",":","",.)," ","",.) local wjma="`sj'" set seed `wjma' clear local shu= int(100*runiform() ) // local xm 阅读全文