Need the first and the third element after doing strsplit

Question

[horsedog]

I have a quick question about to extract the the first and the third element after doing the strsplit in R, here is the example:

Bacteroides oleiciplenus YIT 12058

what I need is Bacteroides YIT What I can do with it? I only know how to extract the first one using "head,1" Thank you very much

Answer 1

[cpad0112]

> library(stringr)
> str_c(str_split_fixed("Bacteroides oleiciplenus YIT 12058", " ",4)[,c(1,3)],collapse=" ")
[1] "Bacteroides YIT"

Bash solution:

 $ echo "Bacteroides oleiciplenus YIT 12058" | cut -f1,3 -d" " 
 Bacteroides YIT

Awk solution:

$  echo "Bacteroides oleiciplenus YIT 12058" | awk  '{print $1,$3}' 
  Bacteroides YIT

Answer 2

[Jean-Karim Heriche]

Not really a bioinformatics question. It's an R programming one. Anyway, since I'm here:
As per the doc, strsplit returns a list so:

lst <- strsplit(mystring, " ")  # split string on space
lst[[1]][2] # access second element