Research Article

Zipf's Law, Hierarchical Structure, and Cards-Shuffling Model for Urban Development

Figure 2

The scaling patterns for the hierarchy of the 452 cities in America (2000).
480196.fig.002a
(a) The scaling relation between urban population and city number
480196.fig.002b
(b) The scaling relation between urban area and city number
480196.fig.002c
(c) The allometric relation between urban area and population