在绘图区域外添加文本 [英] Add text outside plot area

问题描述

示例代码

library(ggplot2)
ggplot(mtcars, aes(mpg, cyl, color = vs)) + geom_line()

如何像在使用上图所示的示例中那样向x轴添加任意文本，然后在上面写上任意单词"

How if it is possible to add arbitrary text to the x axis like in this example made using the plot above and then I wrote on it "arbitrary words"

推荐答案

我不确定您要尝试执行的操作，这可能会或可能不会很好地推广.

I'm not entirely sure what you're trying to do so this may or may not generalise well.

也就是说，一种可能性是将annotate与coord_cartesian(clip = "off")一起使用以允许绘图区域之外的文本.

That said, one possibility is to use annotate with coord_cartesian(clip = "off") to allow text outside the plot area.

ggplot(mtcars, aes(mpg, cyl, color = vs)) +
    geom_line() +
    annotate("text", x = 12.5, y = 3.5, label = "Arbitrary text") +
    coord_cartesian(ylim = c(4, 8), clip = "off")

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