Eileen’s postcard uses position, hue, and value to represent the emotion data she captured during her assignment. The x-axis represents time and the y-axis represents emotions—she realized that the emotion categories she labeled last week also correspond well to a negative-to-positive scale. Each dot represents a five minute emotion datapoint, and the position of the dot shows the negativity or positivity of the emotion. The colored columns show the stages over time. For times where two emotions occur at the same time, the darker value dot is the primary emotion and the lighter value dot is the secondary emotion. This postcard encourages Eileen to consider times where her emotional state quickly jumps. See the back of the postcard for the key and other details!
