Figure 8
From: Urban groups: behavior and dynamics of social groups in urban space
Location popularity. (a) The heatmap of the location popularity during the day hours. (b) The heatmap of the location popularity during the night hours. (c) The heatmap of the rank difference, red means that the location loses popularity between day and night, while blue means that the location gains in popularity, the color intensity reflects the absolute value of the rank difference of the location