r程序并排箱图

Question

I have three different boxplots,

k1<-boxplot(decreased$Group.1)

k2<-boxplot(unchanged$Group.1)

k3<-boxplot(created$Group.1)

Is there any way I can make side-by-side boxplot with it or do I have to combine the columns for table together and use ~ to find out side by side?

Answer 1

It can happen but you will need to play with the xlim , ylim , at and add arguments.

See this example:

boxplot(1:10, xlim=c(1,6), ylim=c(0,20), at=1.5)
boxplot(2:10, add=TRUE, at=3.5)
boxplot(3:20, add=TRUE, at=5.5)

So, you need to add the x-limits and y-limits on the first plot along with the location of where to plot the first barplot (specified by at ). Then consecutive barplots need the location (ie again at ) and also the add=TRUE argument.