Syntax
√输入1:
setwd("C:/Users/mooshaa/Desktop")
library(rio)
plus1 "importance.xlsx")
first 1:7,]
f1 select = -c(id,item,a13))
##
或者
drops "a13")
f2 ###
fmean 1,mean))
importance[1:7,"a13"] importance[!complete.cases(importance),]
importance$a10[is.na(importance$a10)] 30,-c(1,2,12)],1,mean))
importance$mean 1,2)],1,mean))
importance$sd 1,2)],1,sd),2)
importance per for(i in 1:nrow(importance)){
per[i]9)/(ncol(importance)-5)
}
nulldata 73,ncol=20))
x q(3,41,2)
y q(4,42,2)
for(i in 1:ncol(nulldata)){
nulldata[,i]=importance[,x[i]]+importance[,y[i]]
}
importance 100})
plus1 write.csv(importance,"importance.csv")