Cells

CRAFTY is based on a grid of cells, representing any absolute spatial scale. Cells are the basic spatial data unit. They have x,y coordinates, levels for a set of capitals, and levels of current service production. Each cell has defined levels of a range of capitals, which describe the availability of particular social, environmental or economic resources. Cells are grouped into regions, which function autonomously. Within a region, a non-spatial population is assumed to exist and to generate demands for services, such as food, timber, and access to nature. Each cell may be managed by a single land use agent.

Cells are small enough to capture different land uses sufficiently. Each cell is managed by a single agent. Multiple ownership of cells is not supported.

Two types of agent collectives exist during a course of a simulation run. First is the list of agents that possess land parcels (cells) in simulated landscape (grid). Second is the list of potential agents that enter the system to takeover cells from existing agents (if possible) or occupy a vacant or abandoned cell on the grid. However, these collectives are not represented explicitly and do not have any impact on simulations.

• Perfect cell