conversion of a list element to a vector

You meant [[var]] not [var].  liste[var] is a one-element list.

Hello,

I would like to extract unique elements of a variable which belongs to a 
list

liste <- list(V1=c(1,2,3,5,2), V2=c(1,2,3,4,5))
var <- "V1"
uni <- unique(liste[var]) #does not work

I know that liste[var]$V1 works but for my problem, the label variable 
"V1" is only know through the var variable.

I can I do

Thanks in advance.

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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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Oxford OX1 3TG, UK                Fax:  +44 1865 272595

conversion of a list element to a vector

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