Try this:

length(unique(sapply(list(rnorm(4), rnorm(5), rnorm(6)), length))) == 1

On Mon, Jan 31, 2011 at 5:14 PM, Megh Dal <megh700004@gmail.com> wrote:

> I am looking for an elegant way how I can test the equality of lengths of
> multiple vectors.
>
> For example, this is working fine:
>
> > length(rnorm(4)) == length(rnorm(5))
> [1] FALSE
> However this is not:
>
> > length(rnorm(4)) == length(rnorm(5)) == length(rnorm(6))
> Error: unexpected '==' in "length(rnorm(4)) == length(rnorm(5)) =="
> Ofcourse I can test it by taking pairwise  vector i.e. (1,2), (1,3), (2,3)
> and conclude all are of same length only if all 3 tests are passed. Is
> there
> any better (R) way to doing that?
>
> Thanks in advance
>
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>
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>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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