
X2012$year<-strftime(X2012$DateTime,"%Y%")
X2012$month<-strftime(X2012$DateTime,"%M%")
X2012$day<-strftime(X2012$DateTime,"%D%")
X2012_daily<-aggregate(X2012[,2:25],by=list(year=X2012$year,month=X2012$month,day=X2012$day),FUN = mean,na.rm=T)
命令是這樣的,一年每天48個資料,算日平均和月平均,但是輸出的結果不知道怎么解讀,求指教
轉載請註明出處,本文鏈接:https://www.uj5u.com/qita/105033.html
