Lab Worksheet 2

We will be working with the msleep data set that is provided with ggplot2. The data set contains information about the sleep habits of 83 mammals. Enter ?msleep on the R command line to learn more about the dataset.

Problem 1: Make the following plots: (i) a plot of total time awake vs. body weight, colored by “vore” (carnivore, herbivore, etc.); (ii) a plot of body weight vs. brain weight, colored by “vore”. When you plot body weight and/or brain weight, consider whether a linear scale or a logarithmic scale seems more appropriate, and explain your reasoning in 1-2 sentences. HINT: Use the functions scale_x_log10() and scale_y_log10() to change the scales.

# your R code goes here

Your answer goes here.

Problem 2: Explain the difference between geom_line() and geom_path(). Make up a simple data set (5-10 data points), plot it twice, once using geom_line() and once using geom_path(), and explain why each plot looks the way it does.

Your answer goes here.

# your R code goes here