Dear Nina,

Is this what you want?

x=c("MT2342","MT0982","MT2874")
substr(x,3,nchar(x))

HTH,

Jorge



On Wed, Jul 2, 2008 at 10:24 AM, <naw3@duke.edu> wrote:

> Hi,
>
> I have a data frame with strings that have two letters and four numbers.
> When I
> store a whole row as a new vector and try to remove the preceding letters
> using
> the gsub command, it returns characters of single numbers that have no
> relation
> to the numbers in each string. I also noticed that when I view the new
> vector
> before using gsub, it includes the original headers from the data frame.
> For
> example,
>
> The original row will contain (i'm not showing the headers):
>
> MT2342    MT0982    MT2874
>
> and after I use the command, 'gsub('[^0-9]','',PthwyGenes),' I get:
>
> "6"    "6"    "8"
>
> and this result no longer has any headers.
>
> Does anyone know why this happens and how I can fix it?
>
> Thanks,
> -Nina
>
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