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")
Questo esercizio fa parte del corso
Joining Data with dplyr
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Aggregate Millennium Falcon for the total quantity in each part
millennium_falcon_colors <- millennium_falcon %>%
group_by(___) %>%
summarize(total_quantity = ___)