R dplyr join by range or virtual column

Question

I want to join two tibbles by a range or a virtual column. but it seems the by - parameter just allow to handle chr oder vector(chr) o

Answer 1

You use the cut function to create a "class" in object d and then use a left join.

d <- tibble(value = seq(1,6, by = 0.2))
r <- tibble(from = seq(1,6), to = c(seq(2,6),Inf), class = LETTERS[seq(1,6)])

d[["class"]] <- cut(d[["value"]], c(0,2,3,4,5,6,Inf), c('A',"B", "C", "D", "E", "F"), right = FALSE)
d <- left_join(d, r)

To get the right buckets, you just need to work with the cut function to get what you want.