使用ggplot2画 点图、箱线图、小提琴图、蜂窝图、云雨图

使用ggplot2画 点图、箱线图、小提琴图、蜂窝图、云雨图

加载包

library(tidyverse)
library(cowplot)
library(ggrepel)
library(ggsci)
library(ggsignif) # 计算相关性
library(ggbeeswarm) #蜂窝
library(gghalves) #云雨

准备数据集

data(iris) #常用数据集，研究花萼的长度不同物种有何差异

点图

ggplot(data = iris,aes(x = Species,y = Sepal.Length)) 
  geom_point(position = 'jitter',aes(color = Species)) 
  theme_cowplot()

errbar

iris_sum <- group_by(iris,Species) %>%
  summarise(Sepal.Length.mean = mean(Sepal.Length),
            Sepal.Length.sd = sd(Sepal.Length))


ggplot(data = iris_sum , aes(x = Species,y = Sepal.Length.mean))  
  geom_point(aes(color = Species)) 
  geom_errorbar(aes(ymin = Sepal.Length.mean - Sepal.Length.sd,
                    ymax = Sepal.Length.mean   Sepal.Length.sd,
                    color = Species),width = 0.15) 
  theme_cowplot()

箱线图

ggplot(data = iris , aes(x = Species,y = Sepal.Length)) 
  geom_boxplot(aes(fill = Species)) 
  geom_point(aes(color = Species),position = 'jitter')   #jitter 是点的一个摆动
  geom_signif(
    comparisons = list(c("setosa","versicolor"),
                       c("versicolor","virginica")),
    y_position = c(7.2,8.2),
    map_signif_level = T
  ) 
  scale_fill_lancet() 
  theme_cowplot()

小提琴图

ggplot(data = iris , aes(x = Species,y = Sepal.Length)) 
  geom_violin(aes(fill = Species)) 
  geom_boxplot(width =0.1) 
  geom_point(aes(color = Species),position = position_jitter(width =  0.1),
             size = 0.8) 
  geom_signif(
    comparisons = list(c("setosa","versicolor"),
                       c("versicolor","virginica")),
    y_position = c(7.2,8.2),
    map_signif_level = T
  ) 
  scale_fill_lancet() 
  theme_cowplot()

蜂窝图

ggplot(data = iris , aes(x = Species,y = Sepal.Length)) 
  geom_quasirandom(aes(color = Species)) 
  geom_signif(
    comparisons = list(c("setosa","versicolor"),
                       c("versicolor","virginica")),
    y_position = c(7.2,8.2),
    map_signif_level = T
  ) 
  scale_fill_lancet() 
  theme_cowplot()

云雨图

ggplot(data = iris , aes(x = Species,y = Sepal.Length)) 
  geom_half_violin(aes(fill = Species),
                   side = 'r',  #云的方向
                   adjust = 1/2, #平滑程度
                   position = position_nudge(x=0.25,y=0)) 
  geom_boxplot(width =0.1,position = position_nudge(x=0.25,y=0)) 
  geom_point(position = position_jitter(width = 0.15),
             size = 0.8) 
  geom_signif(
    comparisons = list(c("setosa","versicolor"),
                       c("versicolor","virginica")),
    y_position = c(7.2,8.2),
    map_signif_level = T
  ) 
  scale_fill_brewer(palette = 'Dark2') 
  theme_cowplot()  
  coord_flip()   #逆时针旋转

两组数据分布小提琴两侧

ggplot(data = iris , aes(x = Species,y = Sepal.Length)) 
  geom_half_violin(fill = 'red',
                   side = 'r',  #云的方向
                   adjust = 1/2, #平滑程度
                  ) 
  geom_half_violin(aes(y = Petal.Length),fill ='blue',
                   side = 'l',
                   adjust = 1/2) 
  scale_fill_brewer(palette = 'Dark2') 
  theme_cowplot()  
  coord_flip()

因为数据不好所以看起来有点怪异，请君见谅。

比较同一物种花萼和花瓣的长度

iris_tidy <- select(iris,Sepal = Sepal.Length,Petal = Petal.Length,Species)%>% 
  gather(key = Tissue ,value = Length ,Sepal,Petal)

head(iris_tidy)

ggplot(data = iris_tidy, aes(x =Tissue,y=Length)) 
  geom_boxplot(aes(fill = Tissue)) 
  facet_grid(~Species)  #写波浪线后代表以x轴分面，写在前以y轴来分。
  theme_cowplot()

小结

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