Figure 3-9

Hourly Moods as Seen Through Twitter Researchers tracked positive attitudes and negative attitudes expressed through Twitter over the course of a day and from around the globe (Golder & Macy, 2011). Time plots allow for multiple scale variables on one graph; in this case, there are separate lines for each day of the week, allowing us to see, for example, that the lines for Saturday and Sunday tend to be highest for positive attitudes and lowest for negative attitudes across the day.