FROM SPATIALLY EXPLICIT TO MULTIAGENTS SIMULATION OF URBAN DYNAMIC

In the introduction a distinction is made between the macroscopic approach, which the spatially explicit method is connected with, and the microscopic approach. The spatially explicit method is considered in relation to the interactions between located variables: without and with transport of matter. It is compared with the microscopic approach and the main difference is highlighted: the long range interactions of the latter instead of the neighborhood-based interactions of the former. Finally, a comprehensive approach based on agents, goods and markets, considered as main classes, is proposed. In this approach, the basic actions — buy, produce and sell — are able to connect the main classes and to generate an economic system and an urban spatial pattern.