ggplot2 - 图片的各种标题

ggplot2的labs是一个定义各种label 的总函数，可以用于定义各种图片中的标题类型。

各种标题

title:

subtitle:

caption：右下方的补充说明

tag：右上方的标签。

x：x轴名字

y：y轴名字

require(tidyverse)

data <- diamonds %>% 
  sample_n(1000)

ggplot(data = data) + 
  geom_point(aes(x = carat, y = price, color =price))+
 labs(title = "This is title",
      subtitle = "This is subtitle",
      caption = "This is caption",
      tag = "This is a tag",
      x = "new x label",
      y = "New y label")

titles.png

legend 相关

包括外周颜色、填充颜色、形状、标签名字等。

ggplot(data = data) + 
  geom_point(aes(x = carat, y = price, color = color)) +
 labs(color = "color legend")

color legend.png

ggplot(data = data) + 
  geom_point(aes(x = carat, y = price, 
                 shape = cut)) +
  labs( shape = " shape legend")

shape legend.png

修改标签名

ggplot(data =mtcars) + geom_point(aes(x =  wt, 
                                    y = mpg, 
                                    color = factor(cyl))) +
  scale_color_discrete(labels = c("don't like",
                                  "like in small doses",
                                  "like in large doses"))

Rplot.png