Left joining two sets by color
In the videos and the last exercise, you joined two sets based on their part and color. What if you joined the datasets by color alone? As with the last exercise, the Millennium Falcon and Star Destroyer sets have been created and preloaded for you:
millennium_falcon <- inventory_parts_joined %>%
filter(set_num == "7965-1")
star_destroyer <- inventory_parts_joined %>%
filter(set_num == "75190-1")
Cet exercice fait partie du cours
Joining Data with dplyr
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Aggregate Millennium Falcon for the total quantity in each part
millennium_falcon_colors <- millennium_falcon %>%
group_by(___) %>%
summarize(total_quantity = ___)