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