[R] Finding common an unique elements in character vectors

Stephan Kolassa Stephan.Kolassa at gmx.de
Mon Mar 29 21:29:42 CEST 2010


Hi Thomas,

%in% does the trick:

vector_1 <- c("Belgium", "Spain", "Greece", "Ireland", "Luxembourg", 
"Netherlands","Portugal")
vector_2 <- c("Denmark", "Luxembourg")
vector_1[!(vector_1 %in% vector_2)]

HTH,
Stephan


Thomas Jensen schrieb:
> 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.
> 
> Thanks a lot,
> 
> Thomas
> 
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