Fig. 3
From: Spatio-temporal crime hotspots and the ambient population
The significant clusters returned by the Discrete Poisson model. Time is represented on the vertical axis. Two city-centre clusters are highlighted. The density of crimes and social media messages (calculated using Kernel Density Estimation (Silverman 1986)) are also illustrated relative to the two central clusters. ⒸOpenStreetMap contributors, CC-BY-SA ⒸCrown copyright and database right 2015.