[R] test whether all elements of a vector are identical

[David Winsemius]

On Dec 16, 2010, at 9:17 AM, Jannis wrote:

> Dear list,
>
>
> this might be an easy one, but I could figure out a solution (or how  
> to google the right term).
>
> Is there any way to test whether all elements of a vector are  
> identical?

?identical

>
> For numeric vectors I would use
>
> sum(diff(vector)==0)==0
>
> but I have character vectors. Any Ideas?
>
> Cheers
> Jannis
>
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David Winsemius, MD
West Hartford, CT