避免在ggplot2中重叠geom_point和geom_text [英] Avoid overlapping geom_point and geom_text in ggplot2

问题描述

我怎样才能避免ggplot2中的这两层重叠？我尝试显示文本，以便它们不会超出要点。

How can I avoid that these 2 layers in ggplot2 overlap? I try to display the text so that they are not laying above the points.

check_overlap 做得非常好避免文本与自身重叠，但不与其他图层重叠。

check_overlap does a great job with avoiding that the text overlaps itself, but not with other layers.

我也试过库 geom_text_repel ，但是这个库不支持 check_overlap 并显示每个数据点的文本。

I also tried the library geom_text_repel, but this library does not support check_overlap and shows the text for every data point.

但我不需要文本对于每一点，像 check_overlap 都没有。

But I need to not have the text for every point, like check_overlap does.

ggplot(dat, aes(x = CPI, y = HDI)) +
  geom_point(aes(color = Region), shape=21, size=4, position = "identity") +
  geom_text(data = dat, aes(label = Country), size=4, check_overlap = TRUE)

推荐答案

geom_text_repel 不会为空字符串>创建文本标签。但是，文本标签会排斥未标记的数据点。

geom_text_repel will not create text labels for the empty string "". However, the text labels will repel away from the unlabeled data points.

试试这个：

Try this:

# Hide text labels for the first 3 data points
idx <- c(1,2,3)

dat$CountryLabel      <- dat$Country
dat$CountryLabel[idx] <- ""

library(ggrepel)
ggplot(...) + geom_text_repel(data = dat, aes(label = CountryLabel))

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