将两个图组合成一个图

Question

我试图用R绘制饼图。如何将以下饼图组合成一个图？

data <- c(632,20,491,991,20) 
names <- c("alpha","beta","gamma","delta","omega") 
pie(data, names,col = c("red", "yellow", "blue", "green", "cyan"), 
main="PIE CHART 1") 


data <- c(37376,41770,5210,5005,3947) 
names <- c("alpha","beta","gamma","delta","omega") 
pie(data, names,col = c("red", "yellow", "blue", "green", "cyan"), 
main="PIE CHART 2") 

Answer 1

par(mfrow=c(x,y)) # where x is number of rows and y is columns. 
plot(...) 
plot(...) 

有关在一个图形窗口绘制多条曲线看到的更多信息：http://www.statmethods.net/advgraphs/layout.html