2020 Volume 28 Issue 1 Pages 31-37
The study examined characteristics of crime maps and tables released at websites of all 47 prefectural police headquarters in Japan, in terms of spatio-temporal resolutions, crime types and population of jurisdiction.
The results are summarized as follows:
1) There were differences in type of map by crime type; larceny offenses were featured by density maps, while moral offenses and suspicious person informations were featured pin maps.
2) There were differences in crime map by population of jurisdiction; felonious offenses and violent offenses were more released to websites in large-scale prefectures than in small-scale prefectures.
3) There were differences in resolutions by crime type; High spatial resolution was used in violent offenses and larceny offenses than in elonious and intellectual offenses.
4) The spatio-temporal resolution of crime tables was insufficient to describe crime concentration, specially in small-scale prefectures.
