Exercise

Tidy Big Tables

As a final exercise of using the "tidyverse" packages in combination with the "bigmemory" suite of packages, you will again use the tidyr and ggplot2 packages to plot the Borrower Income ratio over time.

Instructions

100 XP

Load the tidyr and ggplot2 packages.
Use the gather() function to gather the counts by year.
Create a line plot with Year on the x-axis and Count on the y-axis. Color and group by BIR.