3 levels of analysis

They correspond to the three steps of the scientific approach:

• Exploration:the aim of this early level of time change analysis is to describe changes of considered phenomena, of their properties and their spatial distribution. It is an important step of synthetic description.
• Modelling: a process model describes the interaction between objects that are organised within the geographic information model. A process model allows to derive current status of phenomena and is then often used to predict their future changes.
• Forecasting: in this advanced level of time change analysis, process models predict future changes that can occur taking in account many factors and constrains in constructing these models to reach this result.