Multiple boxplots in one in R

Question

Hi I need to plot a boxplot in R. I have two matrices a and b. I created a boxplot for a and want to create boxplot for b on the same plot for a. The boxplots of the b matrix should lie on the whiskers of the boxplot for a.

Is there a way I can do it in R ??

Answer 1

To add a boxplot to an existing plot, just use the argument add=TRUE, viz:

##Some data
a = rnorm(20)
b = rnorm(20, 2, 0.3)

##The plots
boxplot(a)
boxplot(b, add=TRUE, col=2)