创建新变量92页
按照书的内容写，出现这个问题
创建leadership数据框
> manager<-c(1,2,3,4,5)
> date<-c("10/24/08","10/28/08","10/1/08","10/12/08","5/1/09")
> country<-c("US","US","UK","UK","UK")
> gender<-c("M","F","F","M","F")
> age<-c(32,45,25,39,99)
> q1<-c(5,3,3,3,2)
> q2<-c(4,5,,5,3,2)
Error in c(4, 5, , 5, 3, 2) : 3元素是空的
> q2<-c(4,5,5,3,2)
> q3<-c(5,2,5,4,1)
> q4<-c(5,5,5,NA,2)
> q5<-c(5,5,2,NA,1)
> leadership <- data.frame(manager,data,country,gender,age,q1,q2,q3,q4,q5,stringsAsFactors = FALSE)
Error in as.data.frame.default(x[[i]], optional = TRUE) :
cannot coerce class ‘"function"’ to a data.frame
虽然我没有明白到底错哪儿了，但是我想我至少创建数据集，就很简单的创建一下
> manager<-c(1,2,3,4,5)
> data<-c("10/24/08","10/28/08","10/1/08","10/12/08","5/1/09")
> country<-c("US","US","UK","UK","UK")
> gender<-c("M","F","F","M","F")
> age<-c(32,45,25,39,99)
> q1<-c(5,3,3,3,2)
> q2<-c(4,5,5,3,2)
> q3<-c(5,2,5,4,1)
> q4<-c(5,5,5,NA,2)
> q5<-c(5,5,2,NA,1)
> date<-c("10/24/08","10/28/08","10/1/08","10/12/08","5/1/09")
> leadership<-data.frame(manager,date,country,gender,age,q1,q2,q3,q4,q5)> leadership
manager date country gender age q1 q2 q3 q4 q5
1 1 10/24/08 US M 32 5 4 5 5 5
2 2 10/28/08 US F 45 3 5 2 5 5
3 3 10/1/08 UK F 25 3 5 5 5 2
4 4 10/12/08 UK M 39 3 3 4 NA NA
5 5 5/1/09 UK F 99 2 2 1 2 1
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