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

Ok, I just wanted to add an answer concerning the brewer palettes, which is more straightforward.

So, original data:

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

dat %>% ggplot(aes(x = rt, fill = factor(acc))) + 
  geom_density(aes(y= ..count..*0.03), alpha = 0.6)+
  scale_fill_brewer(palette = "Set1")

Switch colors

dat %>% ggplot(aes(x = rt, fill = factor(acc))) + 
  geom_density(aes(y= ..count..*0.03), alpha = 0.6)+
  scale_fill_brewer(palette = "Set1", direction = -1)

Switch position

dat %>% ggplot(aes(x = rt, fill = factor(acc, levels = c(1,0)))) + 
  geom_density(aes(y= ..count..*0.03), alpha = 0.6)+
  scale_fill_brewer(palette = "Set1", direction = -1)

Switch position and color

dat %>% ggplot(aes(x = rt, fill = factor(acc, levels = c(1,0)))) + 
  geom_density(aes(y= ..count..*0.03), alpha = 0.6)+
  scale_fill_brewer(palette = "Set1")