Dear SH,
Hmmm... what about
substr(tempdf$name, 4, 6))
?
HTH,
Jorge.-
On Thu, Mar 14, 2013 at 1:06 AM, SH <empti...@gmail.com> wrote:
> Dear list:
>
> I would like to extract three letters from first and second elements
> in one column and make a new column.
>
> For example below,
>
> > tempdf = read.table("clipboard", header=T, sep='\t')
> > tempdf
> name var1 var2 abb
> 1 Tom Cruiser 1 6 TomCru
> 2 Bread Pett 2 5 BrePet
> 3 Arnold Schwiezer 3 7 ArnSch
> > (p1 = substr(tempdf$name, 1, 3))
> [1] "Tom" "Bre" "Arn"
>
> I was able to extract three letters from first name, however, I don't
> know how to extract three letters from last name (i.e., 'Cru', 'Pet',
> and 'Sch'). Can anyone give me a suggestion? Many thanks in advance.
>
> Best,
>
> Steve
>
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