ggplot2 绘图 调整画布的大小
001、
library(cowplot) library(ggplot2) a <- ggplot(mtcars, aes(x = mpg)) + geom_histogram(binwidth = 4) + theme(plot.margin=unit(c(1, 1, 1, 1),'cm')) b <- ggplot(mtcars, aes(x = mpg)) + geom_histogram(binwidth = 4) + theme(plot.margin=unit(c(2, 2, 2, 2),'cm')) c <- ggplot(mtcars, aes(x = mpg)) + geom_histogram(binwidth = 4) + theme(plot.margin=unit(c(3, 3, 3, 3),'cm')) d <- ggplot(mtcars, aes(x = mpg)) + geom_histogram(binwidth = 4) + theme(plot.margin=unit(c(4, 4, 4, 4),'cm')) plot_grid(a, b, c, d, nrow=2,labels = c('aaa', 'bbb', 'ccc', 'ddd'))