GPS stands for Global Positioning System and refers to a network of satellites which are designed to help determine a radio receiver’s position in latitude, longitude, and altitude. GIS stands for a Geographic Information System and is a system, usually computer based, for the input, storage, retrieval, analysis and display of geographic data. The GIS database is usually composed of map-like spatial representations called layers. These layers contain information on a number of attributes. A GeoFarm is a GIS made up of GPS data!