Figure 5: Correlation between GDP and population, as well as correlation between GDP and population density for all 247 NUST-2 regions in the European Union.
From: Urban characteristics attributable to density-driven tie formation
Left panel: correlation between density and GDP, suggesting a strong correlation with a super-linear functional form as predicted by the model. A pure power–law fit to the data is also shown for illustrative purposes. Right panel: the correlation between population and GDP this time showing a sublinear functional form. However, the poor R2-value suggests that raw population does not correlate, as well as density with GDP growth in cities.
