Figure A2-2: Histogram & Boxplot

Portfolio Categories: All Graphics and SGR Book Graphics.

Default Histogram and Default Boxplot

A Default Histogram and a Default Boxplot


TG = ToothGrowth                       # Shorten dataset name
TG$supp2 = as.character(TG$supp)       # Add character version of supp

png(filename = "illustrations/fig-AII-2-univariate visualization 2.png",
  units = "in",                        # Set measurements in inches
  res = 1200,                          # Set resolution at 1200dpi
  width = 6,                           # Width at 6 inches
  height = 4)                          # Height at 4 inches

par(mfrow=c(1, 2),                     # Set multiple plots
  mai = c(.5, .5, .25, .25))           # Set margins 
plot(TG$supp)                          # For factors just use plot()
boxplot(TG$len)                        # It doesn't get any easier than this

dev.off()                              # Output png file