从数据框中绘制饼图

Question

我有两个变量的数据框；出勤4 5 6 7 2 5 7 8以及另一种接受治疗的A B B A A B B AA。如何制作饼图，比较rstudio中A和B的总百分比？

Answer 1

使用dplyr和pie函数，我们首先将treatment分组，然后得出每组的总和。

a = data.frame(attendance=c(4,5,6,7,2,5,7,8),
                             treatment=c("A","B","B","A","A","B","B","A"),
                             stringsAsFactors = FALSE)

A = a%>%group_by(treatment)%>%summarise(tot=sum(attendance))

pie(A$tot/sum(A$tot),labels=paste(A$treatment,round(A$tot/sum(A$tot),2)),main="Pie")