[R] break string at specified possitions
ggrothendieck at gmail.com
Tue May 17 16:35:29 CEST 2016
Here are two ways that do not use any packages:
s <- paste(letters, collapse = "") # test input
substring(s, first, last)
##  "abcde" "fghij" "klmnopqrs"
read.fwf(textConnection(s), last - first + 1)
## V1 V2 V3
## 1 abcde fghij klmnopqrs
On Wed, May 11, 2016 at 4:12 PM, Jan Kacaba <jan.kacaba at gmail.com> wrote:
> Dear R-help
> I would like to split long string at specified precomputed positions.
> 'substring' needs beginings and ends. Is there a native function which
> accepts positions so I don't have to count second argument?
> For example I have vector of possitions pos<-c(5,10,19). Substring
> needs input first=c(1,6,11) and last=c(5,10,19). There is no problem
> to write my own function. Just asking.
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> and provide commented, minimal, self-contained, reproducible code.
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
email: ggrothendieck at gmail.com
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