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rrep

rep function strange error

When I perform:

a <- seq(1,1.5,0.1)
b <- c(1,1.1,1.4,1.5)

x <- rep(c(a,b),times=c(2,1))

Error in rep(c(a, b), c(2, 1)) : invalid 'times' argument

Why?

Solution

  • When we concatenate (c) two vectors, it becomes a single vector. If the idea would be to replicate 'a' by 2 and 'b' by 1, we place them in a list, and use rep. The output will be a list, which can be unlisted to get a vector.

     unlist(rep(list(a,b), c(2,1)))