[R] apply question

[Jeff Newmiller]

What is wrong with utilizing the vectorized nature of paste?

 zz[[1]] <- paste(zz[[1]],zz[[2]],sep="_")
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Sent from my phone. Please excuse my brevity.

Chet Seligman <chet.seligman at gmail.com> wrote:

>This works, where zz is a dataframe:
>
>for(i in 1:nrow(zz)) {
>     zzz[i,1]<-paste(zz[i,1],zz[i,2],sep="_")
>     }
>
>I would like to use "apply" to concatentate two columns of text along
>with
>a separator.
>How?
>
>Chet
>
>	[[alternative HTML version deleted]]
>
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