Aggregating each theme

Previously, you combined tables to compare themes. Before doing this comparison, you'll want to aggregate the data to learn more about the pieces that are a part of each theme, as well as the colors of those pieces.

The table you created previously has been preloaded for you as inventory_sets_themes. It was filtered for each theme, and the objects have been saved as batman and star_wars.

inventory_sets_themes <- inventory_parts_joined %>%
  inner_join(sets, by = "set_num") %>%
  inner_join(themes, by = c("theme_id" = "id"), suffix = c("_set", "_theme"))

batman <- inventory_sets_themes %>%
  filter(name_theme == "Batman")

star_wars <- inventory_sets_themes %>%
  filter(name_theme == "Star Wars")