Adding a year column
The next step of data cleaning is manipulating your variables (columns) to make them more informative.
In this case, you have a session
column that is hard to interpret intuitively. But since the UN started voting in 1946, and holds one session per year, you can get the year of a UN resolution by adding 1945 to the session
number.
Diese Übung ist Teil des Kurses
Case Study: Exploratory Data Analysis in R
Anleitung zur Übung
Use mutate()
to add a year
column by adding 1945 to the session
column.
Interaktive Übung
Vervollständige den Beispielcode, um diese Übung erfolgreich abzuschließen.
# Add another %>% step to add a year column
votes %>%
filter(vote <= 3)