How to change the order of aesthetic layers in ggplot?

Question

How can I change the order of aestetics layers? Here\'s and example

dat <- tibble (acc = rep(c(0,1), 200),
               rt = rnorm(400, 0.5, 0.1))

dat          


        

Answer 1

You could re-order the levels of your factor and add the color adjustment:

dat %>% ggplot(aes(x = rt, 
                   fill = factor(acc, levels = c(1,0)))) + 
  geom_density(aes(y= ..count..*0.03), alpha = 0.6)+
scale_fill_manual(values = c("1" = "#00BFC4", "0" = "#F8766D"))