[R] How to union the elements in a list?

[Benilton Carvalho]

or

unlist(l)

and possibly you want a unique() on that...

b

On Oct 28, 2009, at 5:15 PM, Jorge Ivan Velez wrote:

> Hi Peng,
>
> Here is a suggestion:
>
> unique(do.call(c, l))
> # [1] 1 3 4 6 7
>
> Best regards,
> Jorge
>
>
>
> On Wed, Oct 28, 2009 at 3:07 PM, Peng Yu <> wrote:
>
>> Suppose that I have a list of vectors. I want to compute the union of
>> all the vectors in the list. I could use 'for' loop to do so. But I'm
>> wondering what would be a better solution that does not need a 'for'
>> loop.
>>
>> l=list(a=c(1,3,4), b=c(1,3,6), c=c(1,3,7), ....)
>>
>> ______________________________________________
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>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
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>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.