| To: | s-news@lists.biostat.wustl.edu |
|---|---|
| Subject: | Re: Removing duplicates from Rows : Summary |
| From: | Jagadish Rangrej <jrangrej@yahoo.com> |
| Date: | Tue, 27 Sep 2005 13:58:14 -0700 (PDT) |
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| In-reply-to: | <4339AEA7.9010101@pdf.com> |
Hi !!
Thanks to Sundar and Brad and John for their replies.
use of "unique" and "duplicated" functions can help.
as well as the the function by John Walter:
ToRemoveDups<-function(foo3, Locx,Locy)
{
x <- foo3[, Locx]
y <- foo3[, Locy]
x.pairs <- paste(x, y) # create vector of the
pairs
x.dup <- duplicated(x.pairs) # vector
indicating the duplicates
removedups <- cbind(foo3, x.dup)
removedups[removedups[, dim(removedups)[2]] ==
FALSE, ]
}
can be useful.
Thanks to everybody,
Jag
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