[R] merge with rownames?

Chuck Cleland ccleland at optonline.net
Thu Apr 3 16:53:10 CEST 2008

On 4/3/2008 10:47 AM, Mark Kimpel wrote:
> Can merge be tricked into merging via rownames as opposed to via contents of
> a particular column? I have two data.frames with overlapping, but out of
> order, rownames, but no column contents in common and would like to merge
> without cbinding the rownames to the data.frames.
> Mark

   The details section of the help page for merge suggests you can use 
either merge(..., by=0) or merge(..., by="row.names").


Chuck Cleland, Ph.D.
NDRI, Inc. (www.ndri.org)
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