y = rnorm(20)
groups = factor( rep(1:2, times = c(5, 15) ) )
dotchart(y, groups = groups, labels = c(paste0("Yes_",5:1), paste0("No_", 15:1)))
[groups]
索引并颠倒范围,则可以得到如下结果:
[group]
。如果希望以此方式排列,则需要反转范围的顺序。y = rnorm(20)
groups = factor( rep(1:2, times = c(5, 15) ) )
dotchart(y, groups = groups, labels = c(paste0("Yes_",5:1), paste0("No_", 15:1)))