filter() is applied to a factor variable, it does the intended job. But, when I use
table() afterwards on the new data frame, the dropped variable still appears with 0. I know if I convert the variable to character and then make it factor again, this problem will go away. Are there any better solution than this?
library(dplyr) df_old <- tibble(var = factor(c("A", "B", "C", "B", "A", "k"))) # Drop k df_new <- filter(df_old, var != "k") table(df_new$var) # how do i get rid of k from table? #> #> A B C k #> 2 2 1 0