Urban Expansion
The circles represent cities in East Asia. Each circle has a different meaning. Land circles represent the Area of a city. The size represents the Urban Land of that city. Filled circles represent persons. The sizes represent the Population. White circles represent Urban Density. The sizes represent the area of each city, the whiter they are, the more persons per sq km they have. Circles are ranked by Area. Circles on top depict larger cities.
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