[R] Regex for Special Characters under Grep

From: Gundala Viswanath <gundalav_at_gmail.com>
Date: Fri, 13 Jun 2008 10:42:37 +0900

Hi all,

I am trying to capture lines of a file that DO NOT start with the following header: !, #, ^

But somehow my regex used under grep doesn't work.

Please advice what's wrong with my code below.


in_fname <- paste("mydata.txt,".soft",sep="") data_for_R <- paste("data_for_R/", args[3], ".softR", sep="")

# my regex construction
cat(temp[-grep("^[\^\!\#]",temp,perl=TRUE)], file=data_for_R, sep="\n")

dat <- read.table(data_for_R)

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