[R] grep help (character ommission)

[arun]

HI,
You could also do:
vec1<- c("Intensity","Intensity L", "Intensity H", "Intensity Rep1")
identical(setdiff(seq_along(vec1),grep("H|L",vec1)),as.integer(c(1,4)))
#[1] TRUE
A.K.


----- Original Message -----
From: Johannes Graumann <johannes_graumann at web.de>
To: r-help at stat.math.ethz.ch
Cc: 
Sent: Wednesday, May 1, 2013 4:37 AM
Subject: [R] grep help (character ommission)

Hello,

Banging my head against a wall here ... can anyone light the way to a 
pattern modification that would make the following TRUE?

identical(
  grep(
    "^Intensity\\s[^HL]",
    c("Intensity","Intensity L", "Intensity H", "Intensity Rep1")),
  as.integer(c(1,4)))

Thank you for your time.

Sincerely, Joh

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