Re: [R] abbreviate

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Thu 16 Jun 2005 - 04:33:11 EST

On Wed, 15 Jun 2005, Omar Lakkis wrote:

>> p = data.frame(high=c(5,2), settle=c(3,4))
>> p
> high settle
> 1 5 3
> 2 2 4
>
> What is the most abbreviated way to apply:
> if (p$high < p$settle) p$high = p$settle
>
> I want to modify p to become:
>> p
> high settle
> 1 5 3
> 2 4 4

p[[1]] <- pmax(p[[1]], p[[2]])

seems to need a rather small number of keystrokes at the expense of readability (I would otherwise use p$high etc).

-- 
Brian D. Ripley,                  ripley@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

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Received on Thu Jun 16 04:36:57 2005

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