[R] regular expression for nth character in a string

Jim Lemon jim at bitwrit.com.au
Mon Apr 25 12:36:15 CEST 2011

On 04/25/2011 08:17 PM, Gonçalo Ferraz wrote:
> Hi, I have a string
> "InTrouble"
> and want to extract, say, the first two characters: "In"
> or the last three: "blee"
> or the 3rd, 4th, and 5th: "Trou"
> Is there an easy way of doing this quickly with regular expressions in gsub, grep or similar?
Hi Gonçalo,
You could always try:



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