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  3. Visualizing Big Data with Trelliscope in R

Exercise

Examining time-of-day

Now let's look at how rides are distributed according to the time of day. Let's make a summary plot of weekly ride counts faceted by start hour of day and broken down by workweek/weekend.

Instructions

100 XP
  • Compute the number of rides, n, for each combination of start week (start_wk), start hour of day (start_hod), and weekday.
  • Use points to plot n on the y-axis and start_wk on the x-axis and color the points by weekday.
  • Facet on start_hod such that there is one row of panels and 24 columns, one for each hour of day, using facet_grid().