Chapter 14 Box plot with labels

• R will usually generate labels for the x and y axes based on the command. * These can be changed by adding another command after the qplot() command
• Add The command + xlab(“…”) sets the labels for the x-axis, + ylab(“…”) for the y axis.
• Text for the labels goes in quotes (ie, “Iris species”).
• The use of the “+” is different than for most other R packages
• Forgetting the quotes will cause the code to fail.
  
• Note that units (mm) are included for the y axis.

qplot(y = Sepal.Length,
      x = Species,    
        data = iris) +         # note the "+"
  xlab("Iris Species") +       # label for x axis
  ylab ("Sepal Length (mm)" )  # label for y axis