for example:
a data.frame
data
V1 V2 V3
1 2 3
4 5 6
If I want to calculate the V2
I can get data$V2
But now I want to calculate the dimension name and then analysis the data.
for example
No=3*x ;x=1,2,3,...n
anadata=data$VNo
How could I do?
--
TANG Jie
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