[R] counting entries in vector

[Ian Fiske]

Try:

table(k)[rank(unique(k))]

-ian


Armin Meier wrote:
> 
> Hi all,
> I've a vector with entries, which are all of the same type, e.g. string:
> k <- c("bb", "bb", "bb", "aa", "cc", "cc")
> and want to create a second vector containing the number of each entry
> in k in the same order as in k, i.e.
> c(3, 1, 2)
> 
> or:
> k <- c(5,5,5,5,2,2,4)
> => c(4,2,1)
> 
> thanks
> 
> ______________________________________________
> 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.
> 
> 

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