How to extract the same elements across lists in R

Asked Dec 25 '14 at 03:09

Active Dec 25 '14 at 03:17

Viewed 144 times

There are three lists:

list1 <- c("123","124","126","131")
list2 <- c("111","123","126","133","159")
list3 <- c("119","120","123","124","126","158")

Here, I have to extract the elements that are contained across all the lists. In this case, the new list, say mylist should contain "123"and "126". How can do this in R?

asked Dec 25 '14 at 03:09

Bill TP

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those are vectors not lists, you might be looking for the function `grep` – JeremyS Dec 25 '14 at 03:16
`Reduce(intersect, list(list1,list2,list3))` is what I have been looking for. Thanks! – Bill TP Dec 25 '14 at 03:23
Just an FYI, it was the first hit in the search `[r] intersect lists` – Rich Scriven Dec 25 '14 at 03:25

How to extract the same elements across lists in R

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