Extract non intersected element from a string vector in R

Question

I have 2 string vectors, and I have intersected them in order to get the intersected string vector, but now, I need to get the 2 other string vectors without the intersected elements.

That is, vector.1 without intersected.vector elements, and vector.2 without intersected.vector elements. How can I do that?

You can try `v3 <- intersect(v1, v2); v1[!v1 %in% v3]; v2[!v2 %in% v3]` — akrun, Feb 11 '17 at 17:53

David C. · Accepted Answer · 2017-02-11T18:51:45.707

I hope this simple example illustrates what you are asking for:

vector.1 <- LETTERS[1:4]
vector.2 <- LETTERS[3:6]

> vector.1
[1] "A" "B" "C" "D"
> vector.2
[1] "C" "D" "E" "F"

intersected.vector <- intersect(vector.1, vector.2)
> intersected.vector
[1] "C" "D"

new_vec1 <- vector.1[-which(vector.1 %in% intersected.vector)]
> new_vec1
[1] "A" "B"

new_vec2 <- vector.2[-which(vector.2 %in% intersected.vector)]
> new_vec2
[1] "E" "F"

Extract non intersected element from a string vector in R

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