[R] Table into a list

R. Michael Weylandt
Sat, 25 Feb 2012 07:05:07 -0000

Your question is not well formed: do you want a list or a string
(totally different things)? Or even more likely, a character vector?
What do you have now: is it really an array (=matrix) or is it the
data.frame it looks like?

If it's a matrix:

x <- matrix(letters[1:8], ncol = 2)
x <- as.vector(x) # Character Vector
paste(x, collapse = "") # String

If it's a data frame with factors:

x <- data.frame(matrix(letters[1:8], ncol = 2))
as.character(unlist(x)) # omit as.character() if you actually have
character elements and not factors.

Michael

On Fri, Feb 24, 2012 at 5:32 PM, thomas88 <thomas.coquet at free.fr>
wrote:
> Hello,
> I am looking for a way to transform an array into a list (or a string).
> My array has two columns 1 and 2, and I would like to create a list of the
> values.
>
> Let's say I have :
>
> ? ? ? x1 ? ? ? x2
> 1 ? ? ?a ? ? ? ? ?b
> 2 ? ? ?c ? ? ? ? ?d
> 3 ? ? ?e ? ? ? ? ?f
> 4 ? ? ?g ? ? ? ? ?h
>
> What I would like to obtain is a,b,c,d,e,f,g,h.
>
> I tried without success melt and reshape ( reshape(my_array,
> direction="long", varying=1:2) ) but I cannot get it work.
>
> Thanks a lot !!!
> thomas
>
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