[R] concatenating lists elementwise

[Prof Brian Ripley]

On Mon, 18 Oct 2004, Robin Hankin wrote:

> How do I concatenate two lists element-by-element?

> Example:
> 
> list.1 <- list(temperature=c("hot","cold") , size=c("big","medium"))
> list.2 <- list(temperature=c("lukewarm")   , size=c("massive","tiny"))
> 
> 
> list.wanted  <- list(temperature=c("hot","cold","lukewarm") ,
>                        size=c("big","medium","massive","tiny"))
> 
> 
> 
> (the lists are dimnames() of an array).

mapply(c, list.1, list.2)

(but it loses the list names, so copy them across).

-- 
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)
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