从ggplot2中的facet_grid中删除未使用的因子 [英] Removing unused factors from a facet_grid in ggplot2

问题描述

我有这个df：

I've this df:

    df <- data.frame(
      id = c(rep(1:3,20), rep(4:6,20)),
      type = rep(c("A","B","C","D"), each=3, times=10),
      timing = rep(c("T0","T1", "T2", "T3", "T4"), each=12, times=2),
      group = rep(c("Case","Control"),each=60),
      percentage = runif(120, min=15, max=25)
    )

scale =free或 scale =free_y $ b

scale="free" or scale="free_y" dosen't work producing this bar plot:

  require(scales)
   ggplot(df, aes(x=id, y=percentage, fill=type)) +
   facet_grid(group ~ timing,scale="free") +
   geom_bar(position="stack",aes(width = 0.5),stat = "identity") +
   scale_y_continuous(labels = percent_format())+
   coord_flip()

推荐答案

这个问题没有解决方案？我在阅读那个faces_grid不支持 drop ， droplevels ， scale 。

No solutions for this issue? I was reading that faced_grid doesn't supports drop, droplevels, scale.

真的吗？

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