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Daily ride counts

A useful way to tabulate and visualize cab rides is by looking at the number of rides according to the calendar day. In this exercise, you'll compute this summary and examine how daily ridership varies by time and the day of week.

The tx data set is preloaded for you.

Este exercício faz parte do curso

Visualizing Big Data with Trelliscope in R

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Instruções do exercício

  • Create a daily summary, grouping by the date of pickup (pickup_date) and counting the number of rides, calling the new variable n_rides. Recall that dplyr's n() function provides a count of how many observations are in each group.
  • Plot the result using ggplot2's geom_line(), with pickup_date on the x-axis and n_rides on the y-axis.

Exercício interativo prático

Experimente este exercício completando este código de exemplo.

library(dplyr)
library(ggplot2)

# Summarize the number of taxi rides by pickup day
daily_count <- tx %>%
  group_by(___) %>%
  summarise(n_rides = ___)

# Create a line plot
ggplot(daily_count, aes(___, ___)) +
  ___
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