该包可画的图很多，也是 ggplot2 的扩展包，但对我最有用的还是题目中的两种（雷达图相关的地方也有用）。

• 参考：
  https://easystats.github.io/see/

当然绘制这两种图的方法很多，比如：

• gghalves，也可以分箱图，nice；
• 老俊俊在ggplot 绘制分半小提琴图+统计检验用到了 introdataviz 包的 geom_split_violin()函数，他自己的包好像也有类似功能，参考jjPlot 绘制分半提琴和箱线图；
• Split violin plot with ggplot2 ；
• ......

1. 分半小提琴图

要是有也截一半箱图的函数就更方便了。

• geom_violinhalf()
flip: TURE时右，FALSE时左。

df_iris <- iris %>% pivot_longer(-Species, names_to = "Type", values_to = "Length")

ggplot(df_iris) +
  geom_violinhalf(data = filter(df_iris, Species == "virginica"),
                  aes(x = Type, y = Length, fill = Species), flip = T) +
  geom_boxplot(data = filter(df_iris, Species == "virginica"),
                  aes(x = Type, y = Length),
                  width = 0.1,
                  position = position_nudge(x = -.05)) +
  geom_violinhalf(data = filter(df_iris, Species == "versicolor"),
                  aes(x = Type, y = Length, fill = Species), flip = F) +
  geom_boxplot(data = filter(df_iris, Species == "versicolor"),
                  aes(x = Type, y = Length),
                  width = 0.1,
                  position = position_nudge(x = .05)) +
  scale_fill_manual(values = c("#e6550d", "#3182bd")) +
  theme_bw()

2. 云雨图

• geom_violindot()
dots_size, dots_color, dots_fill

ggplot(iris, aes(x = Species, y = Sepal.Length, fill = Species)) +
  geom_violindot(dots_size = 2) +
  scale_fill_manual(values = c("#FFCC00", "#009999", "#CC3333")) +
  theme_bw()