Dear list,
I'm trying to concatenate the values of two columns but im not able to do it:
i have a dataframe with the following two columns:
X VAR1 VAR2
1 2
2 1
3 2
4 3
5 4
6 4
what i would like to obtain is:
X VAR3
1 2
2 1
3 2
4 3
5 4
6 4
I try with paste but what I obtain is:
X VAR3
1 NA2
2 1NA
3 2NA
4 NA3
5 NA4
6 4NA
Thanks a lot!!
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