Boxplot sees values that aren't there

Question

I have a IMDB dataset and trying to make a boxplot of a film\'s ratings.

I\'ve successfully loaded the dataset and tried to make the boxplot but it produced a really we

Answer 1

Factors retain their levels even after subsetting, you can drop those that are unused with droplevels:

boxplot(rating ~ title, data=droplevels(imdb[imdb$title == "Top Gun (1986)", ]))