R语言绘图系列：

• R语言可视化及作图1--基础绘图（par函数，散点图，盒形图，条形图，直方图）
• R语言可视化及作图2--低级绘图函数
• R语言可视化及作图3--图形颜色选取
• R语言可视化及作图4--qplot和ggplot2美学函数
• R语言可视化及作图5--ggplot2基本要素和几何对象汇总
• R语言可视化及作图6--ggplot2之点图、条形图、盒形图、直方图、线图
• R语言可视化及作图7--ggplot2之标签、图例和标题绘制
• R语言可视化及作图8--坐标轴自定义和坐标系转换

一. 主题函数

1. ggtheme {ggplot2}

1.1 绘制一张题

library(ggplot2)
mg <- ggplot(mtcars,aes(x=mpg,y=wt))+geom_point()
mg  #默认灰色背景

1.2 theme_bw函数

a <- mg+theme_bw()+geom_text(aes(x=30,y=5),label='theme_bw()',color=
                               'red',size=10)
a #白色网格背景

1.3 theme_classic函数

b <- mg+theme_classic()+geom_text(aes(x=25,y=5),label='theme_classic()',
                                  color='red',size=10)
b #经典白色背景

1.4 theme_dark

c <- mg+theme_dark()+geom_text(aes(x=25,y=5),label='theme_dark()',
                                  color='red',size=10)
c #暗色背景

1.5 theme_light函数

d <- mg+theme_light()+geom_text(aes(x=25,y=5),label='theme_light()',
                               color='red',size=10)
d

1.6 theme_get函数

e <- mg+theme_get()+geom_text(aes(x=25,y=5),label='theme_get()',
                                color='red',size=10)
e#与原始背景类似

1.7 theme_linedraw函数

f <- mg+theme_linedraw()+geom_text(aes(x=25,y=5),label='theme_linedraw()',
                              color='red',size=10)
f

1.8 theme_replace

g <- mg+theme_replace()+geom_text(aes(x=25,y=5),label='theme_replace()',
                                   color='red',size=10)
g #与默认类似

1.9 theme_minimal

h <- mg+theme_minimal()+geom_text(aes(x=25,y=5),label='theme_minimal()',
                                  color='red',size=10)
h #x轴y轴不见了，只有网格

1.10 theme_void

i <- mg+theme_void()+geom_text(aes(x=25,y=5),label='theme_void()',
                                  color='red',size=10)
i #只有点

2. ggthemes包

绘制一张图

library(ggplot2)
library(ggthemes)
p <- ggplot(mtcars,aes(x=wt,y=mpg,color=factor(gear)))+
  geom_point()+labs(title = 'Cars')+
  theme(plot.title = element_text(hjust = 0.5,family = 'Times New Roman'))
p

2.1 theme_economist

a <- p+theme_economist()+scale_color_economist()+
  geom_text(aes(x=4,y=30),label='theme_economics',color='deeppink')
a

2.2 theme_solarized

b <- p+theme_solarized()+scale_color_solarized('blue')+
  geom_text(aes(x=4,y=30),label='theme_solarized',color='deeppink')
b

2.3 theme_dark

c <- p+theme_solarized(light = FALSE)+scale_color_solarized('red')+
  geom_text(aes(x=4,y=30),label='theme_dark',color='deeppink')
c

2.4 theme_dark2

d <- p+theme_solarized_2(light = FALSE)+scale_color_solarized('blue')+
  geom_text(aes(x=4,y=30),label='theme_dark2',color='deeppink')
d

2.5 theme_stata

e <- p+theme_stata()+scale_color_stata()+
  geom_text(aes(x=4,y=30),label='theme_stata',color='deeppink')
e #模仿stata生成的图

2.6 theme_igray

f <- p+theme_igray()+geom_text(aes(x=4,y=30),label='theme_igray',color='deeppink')
f

2.7 theme_wsj

h <- p+theme_wsj()+scale_color_wsj('colors6','')+
  geom_text(aes(x=4,y=30),label='theme_wsj',color='deeppink')
h

2.8 theme_calc

i <- p+theme_calc()+scale_color_calc()+
  geom_text(aes(x=4,y=30),label='theme_calc',color='deeppink')
i

2.9 theme_pander

j <- p+theme_pander()+scale_color_pander()+
  geom_text(aes(x=4,y=30),label='theme_pander',color='deeppink')
j

2.10 theme_hc

k <- p+theme_hc()+scale_color_hc()+
  geom_text(aes(x=4,y=30),label='theme_hc',color='deeppink')
k