[R] how to subtract one string from another in R

Santosh Srinivas santosh.srinivas at gmail.com
Sat Jun 18 12:23:44 CEST 2011


Hello Vijayan,

Depending on your end goal the following could possibly help

substr(string,nchar(string1)+1, nchar(string))

or

strsplit(string," ")

HTH,
Santosh


On Sat, Jun 18, 2011 at 2:06 PM, Vijayan Padmanabhan
<padmanabhan.vijayan at gmail.com> wrote:
> Dear R Group
> Here is what i am trying to do.. but couldnt figure out how..
>
> string<-"ABC DEFG HIJKLM NOPQ RSTUV WXY"
> string1<-substr(string,1,4)
>
>
> I want to create an R object string 2 ( following the logic shown).. R does
> not allow string subtraction.. any suggestions how to achieve this?
>
>
> string2<-string-string1 (it should now hold "DEFG HIJKLM NOPQ RSTUV WXY"
>
> I want to loop this till i reach the end of the original string..
>
> stringn<-"WXY"
>
> Any help would be appreciated.
>
>
>
> Regards
> Vijayan Padmanabhan
>
>        [[alternative HTML version deleted]]
>
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