[R] Combine two columns

[Gabor Grothendieck]

Depending on your purpose you might want to look
at ?interaction or its synonym : (i.e. a colon)

On Fri, Mar 7, 2008 at 4:09 PM,  <amarkey at uiuc.edu> wrote:
> Is there a way to combine two columns within a data frame?
>
> Example data:
>
> id      snp     AL1     AL2
> 1500    30      A       B
> 1510    30      A       A
> 1520    30      A       B
>
> This is what I would like:
>
> indv    snp     AL1AL2
> 1500    30      AB
> 1510    30      AA
> 1520    30      AB
>
> Any help is greatly appreciated.
>
> Alysta
>
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