[R] Finding common an unique elements in character vectors

[Chuck Cleland]

On 3/29/2010 1:53 PM, Thomas Jensen wrote:
> Dear R-list,
> 
> I have a problem which I think is quite basic, but so far google has not
> helped me.
> 
> I have two vectors like this:
> 
> vector_1 <- c(Belgium, Spain, Greece, Ireland, Luxembourg, Netherlands,
> Portugal)
> 
> vector_2 <- c(Denmark, Luxembourg)
> 
> I would like to find the elements in vector_1 that are not in vector_2
> 
> so that i get a vector with these countries: Belgium, Spain, Greece,
> Ireland, Netherlands, Portugal.


vector_1 <- c('Belgium', 'Spain', 'Greece', 'Ireland', 'Luxembourg',
'Netherlands', 'Portugal')

vector_2 <- c('Denmark', 'Luxembourg')

setdiff(vector_1, vector_2)

?setdiff

> Thanks a lot,
> 
> Thomas
> 
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-- 
Chuck Cleland, Ph.D.
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