Exercise

Space race timeline

The "first" space race began as the United States and the Soviet Union tried to become the global force in spaceflight. This race peaked on July 20, 1969, when Apollo 11, a crewed spacecraft, landed on the moon. In this exercise, your task is to create a time series plot summarizing the first space race: the race for spaceflight superiority by countries.

The plotly, crosstalk, and dplyr packages are already loaded.

Instructions

100 XP

Create a new SharedData object from the state_launches data frame.
Create a line chart displaying the number of launches by year (launch_year) for each state (state_code).
Plot each line in a different color.
Enable selection (i.e. highlighting) of an individual state.

Take Hint (-30 XP)