R: Data Analysis and Visualization

Creating horizontal box plots

In this recipe, we will learn how to make box plots with horizontal boxes instead of the default vertical ones.

Getting ready

We will continue using the base graphics library functions, so we need not load any additional package. We just need to run the recipe code at the R prompt. We can also save the code as a script to use it later. Here, we will use the metals.csv example dataset again:

metals<-read.csv("metals.csv")

How to do it...

Let's draw the metals concentration box plot with horizontal bars:

boxplot(metals[,-1], 
horizontal=TRUE,las=1,
main="Summary of metal concentrations by Site")

How it works...

We simply had to ...