Message-ID: <Pine.LNX.4.44.0304081441560.6577-100000@gannet.stats>
Date: 2003-04-08T13:45:00Z
From: Brian Ripley
Subject: Multiple Merge
In-Reply-To: <169.1ce0f5a5.2bc3c9df@aol.com>
On Tue, 8 Apr 2003 TyagiAnupam at aol.com wrote:
> How to merge multiple dataframes with a common column? Merge takes only two
> dataframes as arguments.
> Something like:
> df <- merge(df1,df2,df3,...,by="ID")
Is that a unique ID the same values of which occur in all the dfs? Then
it is not a question of merging. Sort them all on ID and cbind them.
Otherwise you can merge df1 with df2, df12 with df3 etc.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595