Scatterplot showing Stevenson's correspondents, how many letters they wrote to him over time, and the average sentiment score of those letters.
This visualization looks at the the average character length of letters sent by different addressees, and colors the bars by their average sentiment score. Stevenson's mother is the addressee with the longest letters, but they seem to be fairly negative, according to the sentiment analyzer.
These charts show how sentiment analysis can be visualized in Stevenson's letters.
