BASIC TYPES OF GEOGRAPHIC AUTOMATA

FIXED (F) GEOGRAPHIC AUTOMATA do not change their location and form over time - e.g., houses, road links, land parcels.

NON-FIXED (D) GEOGRAPHIC AUTOMATA can change their location over time - e.g., pedestrians, vehicles, householders, landlords.


GEOGRAPHIC AUTOMATA STATES (S)

States of the GA represent their properties and include non-spatial attributes and locational information.

Depending on the properties of geographic feature representing Fixed CA - point, polyline, polygon or more complex - its location can be represented following the standards of GIScience, based on the vector of vertex coordinates.

For example, the states of the HOUSE can represent number of floors, number of rooms, price, and the vector GIS presentation of the house foundation polygon

Location of the Non-fixed GA is usually given by means of their relationships with the Fixed GA



GEOGRAPHIC AUTOMATA STATE TRANSITION RULES (TS)

State Transition Rules (TS) describe how automata attributes change in time;
TS may include rules that describe the change of automata location,
while usually it is done by the Relationships Transition Rules (TR).