Visualizing the Adjusted Demographic Trends
Let's compare changes in borrowing across demographics over time. The data frame rydf you created in the last exercise is available in your workspace. 
Note: We removed the row corresponding to "Not Avail".
This exercise is part of the course
Scalable Data Processing in R
Exercise instructions
tidyr and ggplot2 are loaded in your workspace. 
- Print the 
rydfandpop_proportionobjects. - Convert 
rydfto a long-formatted data frame by gathering all columns exceptRace. - Create a line chart with 
YearandAdjusted_Counton the x and y axes, respectively. 
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# View rydf
___ 
# View pop_proportion
___
# Gather on all variables except Race
rydfl <- ___(rydf, ___, names_to = "Year", values_to = "Count")
# Create a new adjusted count variable
rydfl$Adjusted_Count <- rydfl$Count / pop_proportion[rydfl$Race]
# Plot
ggplot(rydfl, aes(x = ___, y = ___, group = Race, color = Race)) + 
    geom_line()