Hi
My dataframe looks like this
data=
id V1 V2 V3 V4
1 5 6 7 8
1 10 20 30 40
2 23 54 54 6
3 43 54 54 33
4 12 34 54 54
4 34 54 23 52
I have to sum by id
I used command aggregate(data,by =list(data$id),FUN=sum)
Error i face is
Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L), na.rm = FALSE) :
sum not meaningful for factors
Please help me
-----
Thanks in Advance
Arun
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