更改文本注释的背景颜色以增加对比度和可见性 [英] Changing background color for a text annotation to increase contrast and visibility

问题描述

我想更改带注释文本的背景颜色，使其为绿色并覆盖其后面的所有内容(例如下面示例中的水平线).我该怎么办?

I'd like to change the background color for my annotate text so that it's green and covers up anything behind it (like the horizontal line in the example below). How do I do that?

ggplot() + 
  geom_hline(yintercept=0) + 
  annotate("text",x=0,y=0,label="Here is a line")

推荐答案

尝试使用geom_label代替:

ggplot() + 
  geom_hline(yintercept = 0) + 
  labs(x = "", y = "") +
  geom_label(aes(x = 0, y = 0, label = "Here is a line"), fill = "green")

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