[R] intersect

David Winsemius dwinsemius at comcast.net
Wed May 12 06:12:17 CEST 2010

On May 11, 2010, at 10:31 PM, Yuan Jian wrote:

> Hi there,
> how can I test every element in a vector whether appears in another  
> vector?
> such as
> a<-c("aa", "bb", "ff", "cc")
> b <-c("oo","jj","bb","cc")
> somefunction(a,b) gives [False, True, False, True]

The other answers probably gave you what you wanted, but you should  
not leave this exchange thinking that True == TRUE or that False  
=FALSE in R.


David Winsemius, MD
West Hartford, CT

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