[R] help: how to change the column name of data.frame

[Prof Brian Ripley]

On Tue, 19 Jul 2005, wu sz wrote:

> Thanks a lot! But  DF[c(4,6)] <- DF[c(6,4)]   seems to just exchange
> the data, not the names. If exchanging the columns(both data and
> names) needs two steps?
>
> DF[c(4,6)] <- DF[c(6,4)]
> names(DF)[c(4,6)] <- names(DF)[c(6,4)]

Yes, it does.  You did however say in your first message that you wanted 
to exchange the data, despite the subject line.

As I asked before *PLEASE* do try to be precise in what you want to do.

-- 
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