The map below shows moving 10-day windows of crime in Chicago, with he crime types color coded. The boundary lines on the map indicate police districts. Each dot represents a crime, and the opacity of each dot corresponds to the number of this type of crime reported in that geographic location on that day. For example, a dark shaded pink dot would indicate an area of heavy theft.
This visual technique provides insight into the intensity of various crime types across region in Chicago. In addition, the timeline below the map highlights the current chronological window being plotted, as well as the total density of crimes for the entire data set. The color codes in the this timeline correspond to those on the map.