GRAPH with ggplot

后端未结

关注

 0  341

I have this dataframe :

year = c(rep(1998,4),rep(2000,5),rep(2002,2),rep(2004,2))
gift = c(0,0,0,0,1,0,1,1,0,0,0,1,0)
type = c("L","L","L


                      
              相关标签: