Also, if this is done by each implication of emotion, that is far too much data in my opinion. Do it by chapter and if that’s too few data points, do every 0.5 or 0.25 chapter. That, or pick something other than emotional points. A fun example might be: deaths in A Song of Ice and Fire, or switching of character perspectives/setting/scene in a different book or series, or frequency of a particular word/phrase.

Part of the charm of the movie poster one is that you could possibly distinguish the film without a title. Take away the titles here and I’d have no clue what I’m looking at.