# intersect for multiple vectors in R

[This article was first published on

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

**One Tip Per Day**, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

Say you have

a <- c(1,3,5,7,9) b <- c(3,6,8,9,10) c <- c(2,3,4,5,7,9)

A straightforward way to do the job is:

intersect(intersect(a,b),c)

More cleverly, and more conveniently if you have a lot of arguments:

Reduce(intersect, list(a,b,c))

The Reduce function is part of funprog {base}, which includes

Reduce(f, x, init, right = FALSE, accumulate = FALSE) Filter(f, x) Find(f, x, right = FALSE, nomatch = NULL) Map(f, ...) Negate(f) Position(f, x, right = FALSE, nomatch = NA_integer_)

I will learn it and put notes here later.

To

**leave a comment**for the author, please follow the link and comment on their blog:**One Tip Per Day**.R-bloggers.com offers

**daily e-mail updates**about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.