[R] Remove columns by name data[-c("subj","drug")]

[Prof Brian Ripley]

On Tue, 27 Feb 2001, Dieter Menne wrote:

> Is there an easy way to remove data frame columns
> by name instead of by index? The following gives
> the idea
>
> remove<-c("subj","drug")
> data[-remove]
>
> I found a solution with a few evals and substitutes,
> similar to that used in reshapeLong, but there must
> be an easier way out.

data[-match(remove, names(data))]

-- 
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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