Subset data.frame by column

Question

I have this data.frame:

a <- c(rep(\"1\", 3), rep(\"2\", 3), rep(\"3\",3), rep(\"4\",3), rep(\"5\",3))
b <- c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)
df <-         


        

Answer 1

what about this?

library(dplyr)
df %>% filter(a == 2 | a==3)
  a b
1 2 4
2 2 5
3 2 6
4 3 7
5 3 8
6 3 9