[R] Finding common an unique elements in character vectors

[Thomas Jensen]

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