[R] Problem reading from a data frame

[jim holtman]

Seems to work fine for me:

> x <- c("MT2342",    "MT0982",    "MT2874")
> gsub("[^0-9]", "", x)
[1] "2342" "0982" "2874"
>

You might have 'factors' so you should use as.character to convert to
character strings:

gsub('[^0-9]','',as.character(PthwyGenes))

On Wed, Jul 2, 2008 at 10:24 AM,  <naw3 at 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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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?