Much simpler would be:
act2[!duplicated(act2$Rep),] #use the negation of the duplicated
function on $Rep and indexing
Date Dtime Hour Min Second Rep
51 2006-02-22 14:52:18 14 52 18 useractivity_act
52 2006-02-22 14:52:18 14 52 18 4
58 2006-02-22 14:52:52 14 52 52 3
60 2006-02-22 14:54:42 14 54 42 useractivity_idle
Cannot reproduce the blank line though.
--
David Winsemius
On Mar 12, 2009, at 5:02 AM, Tammy Ma wrote:
Hi All,
act_2
Date Dtime Hour Min Second Rep
51 2006-02-22 14:52:18 14 52 18 useractivity_act
52 2006-02-22 14:52:18 14 52 18 4
55 2006-02-22 14:52:49 14 52 49 4
57 2006-02-22 14:52:51 14 52 51 4
58 2006-02-22 14:52:52 14 52 52 3
60 2006-02-22 14:54:42 14 54 42 useractivity_idle
I want to change act_2 to
Date Dtime Hour Min Second Rep
51 2006-02-22 14:52:18 14 52 18 useractivity_act
52 2006-02-22 14:52:18 14 52 18 4
58 2006-02-22 14:52:52 14 52 52 3
60 2006-02-22 14:54:42 14 54 42 useractivity_idle
in other word, I want to keep 1st if there are many repeated value,
I made the program as:
rm_r<-function(act_2){
dm<-dim(act_2)[1]-1
for(i in 2:dm){
if(act_2$Rep[j]==act_2$Rep[i]){
act_2<-act_2[-j,]
}else{
act_2<-act_2
}
}
return(act_2)
}
But it only remove one row..whats the problem? How should i modify
it? Thanks alot.
Tammy
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and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
