R语言中ggplot绘图调整刻度标签的粗细

 

001、基础绘图

library(ggplot2)#导入ggplot包

ggplot(data = mtcars,         
       aes(x = wt, y = mpg, 
           colour = factor(cyl))) +  
  geom_point() +
  theme_bw() 

 

 

002、设置刻度标签的粗细

library(ggplot2)#导入ggplot包

ggplot(data = mtcars,         
       aes(x = wt, y = mpg, 
           colour = factor(cyl))) +  
  geom_point() +
  theme_bw() +
  theme(
  axis.ticks.x = element_line(colour = "black",size = 5),    ## 设置刻度标签的粗细， x轴为5
  axis.ticks.y = element_line(colour = "black",size = 1))    ## y轴为1

 

 003、设置绘图框线的长度

library(ggplot2)#导入ggplot包

ggplot(data = mtcars,         
       aes(x = wt, y = mpg, 
           colour = factor(cyl))) +  
  geom_point() +
  theme_bw() +
  theme(axis.ticks.length.x = unit(0.5,'cm'),     ## x轴设置长度为0.5
        axis.ticks.length.y = unit(0.1,'cm'))

 

004、同时设置长度和宽度

library(ggplot2)#导入ggplot包

ggplot(data = mtcars,         
       aes(x = wt, y = mpg, 
           colour = factor(cyl))) +  
  geom_point() +
  theme_bw() +
  theme(axis.ticks.length.x = unit(0.5,'cm'),                      ## 设置x轴绘图标签的长度
        axis.ticks.length.y = unit(0.1,'cm'), 
        axis.ticks.x = element_line(colour = "black",size = 5),    ## 设置x轴刻度标签的粗细
        axis.ticks.y = element_line(colour = "black",size = 1)) 

 。