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dfcd
2013 Apr 17
3
Transformation of a variable in a dataframe
HI,
I have a dataframe with two variable A, B. I transform the two variable
and name them as C, D and save it in a dataframe dfcd. However, I wonder
why can't I call them by dfcd$C and dfcd$D?
Thanks,
Miao
> A=c(1,2,3)
> B=c(4,6,7)
> dfab<-data.frame(A,B)
> C=dfab["A"]*2
> D=dfab["B"]*3
> dfcd<-data.frame(C,D)
> dfcd
A B
1 2 12
2 4 18