2011/4/25 Gonçalo Ferraz :
> 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?
>
strapp
On Apr 25, 2011, at 6:17 AM, 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 simila
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
will this do it:
> x <- "InTrouble"
> sub("^(..).*", "\\1", x) # first two
[1] "In"
> sub(".*(...)$", "\\1", x) # last three
[1] "ble"
> sub("^..(...).*", "\\1", x) # 3rd,4th,5th char
[1] "Tro"
>
2011/4/25 Gonçalo Ferraz :
> Hi, I have a string
>
> "InTrouble"
>
> and want to extract, say, t
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?
Thank you for any help.
Gonçalo
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