Hi Gianni,
Thank you for the reproducible example!
Try
mydf$newID <- with(mydf, gsub("_", "Sample", ID))
mydf
HTH,
Jorge.-
On Fri, Mar 16, 2012 at 7:54 AM, gianni lavaredo <> wrote:
> Dear Researchers,
>
> I have a data.frame with 2 columns like this:
>
> mydf <-
>
> data.frame(value=c(1,2,3,4,5),ID=c("Area_1","Area_2","Area_3","Area_4","Area_5"))
>
> > mydf
> value ID
> 1 1 Area_1
> 2 2 Area_2
> 3 3 Area_3
> 4 4 Area_4
> 5 5 Area_5
>
>
> I need to convert the *ID *in the following version
> > mydf
> value ID newID
> 1 1 Area_1 AreaSample1
> 2 2 Area_2 AreaSample2
> 3 3 Area_3 AreaSample3
> 4 4 Area_4 AreaSample4
> 5 5 Area_5 AreaSample5
>
> some people know the right function to split ID and create a new column
>
> Thanks in advance
> Gianni
>
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>
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