How to change facet labels?

Question

I have used the following ggplot command:

ggplot(survey, aes(x = age)) + stat_bin(aes(n = nrow(h3), y = ..count.. / n), binwidth = 10)
  + scale         


        

Answer 1

Both facet_wrap and facet_grid also accept input from ifelse as an argument. So if the variable used for faceting is logical, the solution is very simple:

facet_wrap(~ifelse(variable, "Label if true", "Label if false"))

If the variable has more categories, the ifelse statement needs to be nested.

As a side effect, this also allows the creation of the groups to be faceted within the ggplot call.