在ggplot2 facet_grid中旋转切换的facet标签

Question

我想使用facet_grid：

在彼此的顶部绘制一些条形图

library(ggplot2)

df <- group_by(mpg, manufacturer) %>%
  summarise(cty = mean(cty), hwy = mean(hwy)) %>%
  ungroup()

df <- melt(df, id.vars = "manufacturer")

ggplot() +
  geom_bar(data =df, aes(x = variable, y = value), stat = "identity") +
  facet_grid(manufacturer ~ ., switch = "y")

我使用switch的{​​{1}}参数让刻面标签显示在y轴上，而不是显示在每个刻面的顶部。问题是刻面标签是垂直绘制的，因此会被裁剪。有没有办法水平绘制facet -labels？到目前为止，我发现的所有问题只与旋转x轴标签有关，而不是与刻面标签有关。

Answer 1

您只需添加theme（）并在strip.text.y

中指定角度

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