Message-ID: <Pine.LNX.4.61.0505160705080.20582@gannet.stats>
Date: 2005-05-16T06:07:29Z
From: Brian Ripley
Subject: row.names need reordering
In-Reply-To: <Pine.LNX.4.58.0505160042070.4073@ls01.fas.harvard.edu>
On Mon, 16 May 2005, Anders Schwartz Corr wrote:
> The row.names in my matrix seem to be out of order. I don't remember
> putting row.names in in the first place, I don't see what use they are,
> and they are out of order (perhaps because I sorted them at one point when
> the data was in data.frame format). Can I delete the rownames? or at least
> just reorder them in proper order? I know how to delete them -- how do I
> reorder them sequentially?
Matrices strictly have rownames, data frames row.names. So try
rownames(A) <- seq(len=nrow(A))
(to delete them, use NULL as the rhs).
--
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