Spatial modeling analytical tool. MFworks can be used to process this data to identify areas of rapid change, steepness of slope, aspect or hillside facing, or the ways in which water might drain over the surface. It can be used to measure change over time for events such as deforestation, urban sprawl or desertification. Defining the relationship between locations is also a function of grid analysis - allowing users to determine areas of intervisibility or co-incidental events.