How can I add line to show mean for each barplot not for all dataset

Question

Hi all, how can I add line to show mean for each barplot, not for all dataset?

Answer 1

Hey ranjith, 

Use geom_hline() function to add reference lines in the same ggplot object.

Ex:

geom_hline(aes(yintercept = wt, colour = wt), mean_wt)