[R] Join data frame columns

Rui Barradas ruipbarradas at sapo.pt
Tue Oct 23 16:15:58 CEST 2012


Hello,

Sorry for my earlier post, I misunderstood what you want.

dat <- data.frame(letters, 1:26)
as.vector(sapply(d, as.character))

Hope this helps,

Rui Barradas
Em 23-10-2012 14:13, brunosm escreveu:
> Hi Ivan, thanks for your help!
>
> For example:
>
>> df
>    num letters
> 1   1       A
> 2   2       B
> 3   3       C
> 4   4       D
> 5   5       E
>
> What i want is to join "num" and "letters" in a single column. Something
> like this
>
>> new_df
> 1   1
> 2   2
> 3   3
> 4   4
> 5   5
> 6  A
> 7  B
> 8  C
> 9  D
> 10  E
>
> I tried to do it with a list but it converts factors to numbers...
>
>> new_df<-list(c(df[,1],df[,2]))
>> new_df
> [[1]]
>   [1] 1 2 3 4 5 1 2 3 4 5
>
> Thanks!
>
>
>
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