data transformation (gather?)

Question

I have the following tibble:

~id, ~a, ~b, ~c, ~d,
1, 10, 20, 33, 42,
2, 30, 20, 32, 42,
3, 34, 24, 35, 32,
4, 32, 24, 35, 25,
5, 22, 14, 35, 36,
...
)


        

Answer 1

Use ?gather to read more on how to use the gather function.

library(dplyr)
library(tidyr)

oldTable %>% select(-c, -d) %>% gather(key = aOrB, value = value, -id)

EDIT: If you want to keep c and d, but not stacked:

    oldTable %>% gather(key = aOrB, value = value, -id, -c, -d)

If you want to keep c and d, and stacked along with a and b:

    oldTable %>% gather(key = aOrBOrCOrd, value = value, -id)