I was actually able to figure it out with a friend from my lab.
Basically, I used factor() instead of mutate()
Then I needed to make sure that both AA_summary and Aminoacid_data had $Species as a factor with the correct order of levels.
I was actually able to figure it out with a friend from my lab.
Basically, I used factor() instead of mutate()
Then I needed to make sure that both AA_summary and Aminoacid_data had $Species as a factor with the correct order of levels.