| To: | Jagadish Rangrej <jrangrej@yahoo.com> |
|---|---|
| Subject: | Re: Removing duplicates from Rows |
| From: | Sundar Dorai-Raj <sundar.dorai-raj@pdf.com> |
| Date: | Tue, 27 Sep 2005 15:42:15 -0500 |
| Cc: | s-news@lists.biostat.wustl.edu |
| In-reply-to: | <20050927202759.77723.qmail@web54414.mail.yahoo.com> |
| Organization: | PDF Solutions, Inc. |
| References: | <20050927202759.77723.qmail@web54414.mail.yahoo.com> |
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Jagadish Rangrej wrote: hi! I have duplicates in a table, using two columns to identify the duplicity. How can I remove the duplicates is there any single line trick ? Thanks, Jag
See ?unique or ?duplicated.
Probably you want:
data[!duplicated(data[c("col1", "col2")]), ]
If "col1" and "col2" are the only columns in data, then you simply need:
unique(data)
HTH,
--sundar
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