Fig. 3
From: Algorithmic hospital catchment area estimation using label propagation
Detail LSOA based catchment area map for NHS trusts estimated from the general hospital bed states in Great Britain in early April 2020. Red circles are NHS hospital sites. In panel A the fill represents a relative measure of regional population density, with yellow areas being high density in and around cities. In Panel B the same areas are shown but this time the fill shows the iteration number at which the algorithm labelled a specific area, and the propagation of the algorithm by arrows. Map source: Office for National Statistics licensed under the Open Government Licence v.3.0, Contains OS data â’¸ Crown copyright and database right 2020