Reorder() not correctly reordering a factor variable in ggplot

Question

I\'m baffled as to why the boxplots are not ordering in this plot:

set.seed(200)
x <- data.frame(country=c(rep(\'UK\', 10), 
                          rep         


        

Answer 1

Your code should works fine. Probably you had some package loaded with a function that masked the base reorder function, or perhaps a user-defined reorder function, that doesn't work the same way.

You can check for such name-clashes with conflicts(). Detaching the package, rm(reorder), or restarting R and trying again without defining/attaching the conflicting definition will solve the problem.

Answer 2

Because you did not make it an ordered factor. Try

ggplot(x, aes(reorder(country, wing, median, order=TRUE), wing)) + geom_boxplot()

Answer 3

ggplot(x, aes(reorder(country, wing, FUN = median), wing)) + geom_boxplot()