[R] convert 'list' to 'vector'?

[Dimitris Rizopoulos]

Check function unlist().


Best,
Dimitris


On 8/10/2011 8:58 PM, Liviu Andronic wrote:
> Dear all
> How does one convert a "non-symmetric" list to a vector? See below:
>
>> x<- list()
>> x[[1]]<- letters[1:5]
>> x[[2]]<- letters[6:10]
>> x[[3]]<- letters[11:12]
>> x
> [[1]]
> [1] "a" "b" "c" "d" "e"
>
> [[2]]
> [1] "f" "g" "h" "i" "j"
>
> [[3]]
> [1] "k" "l"
>
>> paste(x)
> [1] "c(\"a\", \"b\", \"c\", \"d\", \"e\")" "c(\"f\", \"g\", \"h\",
> \"i\", \"j\")"
> [3] "c(\"k\", \"l\")"
>> as.vector(x)
> [[1]]
> [1] "a" "b" "c" "d" "e"
>
> [[2]]
> [1] "f" "g" "h" "i" "j"
>
> [[3]]
> [1] "k" "l"
>
>> simplify2array(x)
> [[1]]
> [1] "a" "b" "c" "d" "e"
>
> [[2]]
> [1] "f" "g" "h" "i" "j"
>
> [[3]]
> [1] "k" "l"
>
>
> What I would need to get instead is:
>> letters[1:12]
>   [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l"
>
> Any ideas? Regards
> Liviu
>
>

-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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