Hi,
Try this:
ex<-"cbind(data$response1,data$response2)"
gsub(".*\\(.*\\$(.*)\\,.*\\$.*\\)","\\1",ex)
#[1] "response1"
unlist(strsplit(gsub(".*\\(.*\\$(.*)\\,.*\\$(.*)\\)","\\1 \\2",ex)," "))
#[1] "response1" "response2"
A.K.
----- Original Message -----
From: Özgür Asar <oa...@metu.edu.tr>
To: r-help@r-project.org
Cc:
Sent: Sunday, September 16, 2012 12:26 PM
Subject: Re: [R] two questions about character manipulation
Dear Rui Barradas and Michael Weylandt,
Many thanks for your replies.
My second question is solved now.
But I think I did not expressed my first wish in a clear way
Indeed,
in ex<-"cbind(data$response1,data$response2),
I want to extract the variable name between "$" and "," (corresponds to
response1 in this example) and the one between "$" and ")" (corresponds to
response2).
These symbols ("$", ",", ")" ) are always same, but the names (response1,
response2) might change from data to data.
Best
Ozgur
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