CODEWITHSUNDEEP
rdplyr
spore234
spore234

Reputation: 3640

combine vectors by elements

I have an easy task but it's difficult for me to describe it and find it on stackoverflow.

I have three vectors

v1 <- c(1,1,1,1,1)
v2 <- c(2,2,2,2,2)
v3 <- c(3,3,3,3,3)

how can I combine them elementwise, resulting in:

c(1,2,3,1,2,3,1,2,3,1,2,3,1,2,3)

I know that I can get this vector by rep(c(1,2,3), 5) , I'm looking for a generic solution for all vectors of the same length.

Upvotes: 3

Views: 89

Answers (2)

JeanVuda
JeanVuda

Reputation: 1778

You could use this: 

as.vector(apply(mapply(c, list(v1,v2,v3)),1,c))

Upvotes: 0

d.b
d.b

Reputation: 32548

foo = function(...){
    L = list(...)
    c(matrix(unlist(L), length(L), byrow = TRUE))
}
foo(v1, v2, v3)
# [1] 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

Upvotes: 2

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