I believe that the following will give you what you want:
At 04:30 PM 10/13/2003 +0200, Martin Olivier wrote:
Hi all,
Let Names a vector of chatacters. For example,
> Names [1] "g 604 be-0 -p1 (602 matches)" "g 606 Phli-0 -p2 (517 matches)" [3] "g 608 alu-0 (659 matches)"
I try to use gsub or grep functions for two problems :
1. First, I would like to delete all the characters between parentheses. [1] "g 604 be-0 -p1" "g 606 be-0 -p2" [3] "g 608 be-0 -p3"
gsub(" *$", "", gsub("\\(.*\\)$", "", Names)) # also deletes trailing blanks
2. And, I would like to extract the characters between parentheses [1] "602 matches" "517 matches" [3] "659 matches"
posn <- regexpr("\\(.*\\)$", Names) substring(Names, first=posn+1, last=posn+attr(posn,"match.length")-2)
Any idea?
Best regards, Olivier
I hope that this helps, John
----------------------------------------------------- John Fox Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 email: [EMAIL PROTECTED] phone: 905-525-9140x23604 web: www.socsci.mcmaster.ca/jfox
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