Create a ranking variable with dplyr?

Question

Suppose I have the following data

df = data.frame(name=c(\"A\", \"B\", \"C\", \"D\"), score = c(10, 10, 9, 8))

I want to add a new column w

Answer 1

Other solution when you need to apply the rank to all variables (not just one).

df = data.frame(name = c("A","B","C","D"),
                score=c(10,10,9,8), score2 = c(5,1,9,2))

select(df, -name) %>% mutate_all(funs(dense_rank(desc(.))))