Figure 7
From: From mobile phone data to the spatial structure of cities
Scatter plot and fit of the number of hotspots H vs. the population size P for the 31 cities studied.
Each point in the scatterplot corresponds to the average number of hotspots determined for each one-hour time bin of a weekday (for five weekdays considered here). The power law fit is consistent, for both hotspots identification methods, with a sublinear behavior characterized by an exponent of order 0.6, a value in agreement with theoretical predictions and empirical observations on employment data29. This figure was created with R.
