A spatio temporal simulation model for evaluating delinquency and crime policies

System dynamics, has been useful for a variety of disciplines; however, it has limitations in showing a geographical representation of the models under study. This paper proposes a methodology based on layered vectors which allows the use a city's census information to feed a geographic information system (GIS). The GIS objects implemented into system dynamics and located at coordinates X.Y.Z become the entry parameters for the simulation. The simulation outputs close an analysis cycle, by means of adding new layers which are represented in the GIS. Consequently, the simulation provides feedback for vectorial representation which we successfully used to simulate strategies that can be used to reduce criminality rates in the city under study.