Before revision: 400px| Measures for urban sprawl in Europe: upper left the Dispersion of the built-up area (DIS), upper right the Weighted urban proliferation (WUP ) Weighted urban proliferation (WUP) is a method used for measuring urban sprawl.
After revision: 400px| Urban sprawl in the greater London Built-up Area at the 1-km2 scale in 2009 for: Weighted urban proliferation (WUPp), Percentage of build-up area (PBA), Dispersion (DIS) of the built-up areas and Land-uptake per person (LUP ) Weighted urban proliferation (WUP) is a method used for measuring urban sprawl.