MAPPING

A mapping system may include a display, a global positioning satellite (GPS) system to be carried by a vehicle and a controller. The controller is configured to determine a polygon representing a geographic boundary of a first region based on signals received from the GPS system of the vehicle as the vehicle travels to enclose the first region, to estimate geographic coordinates of a first number of consecutive rows within the polygon based on signals from the GPS system of the vehicle as the vehicle travels between a second number of consecutive rows less than the first number of consecutive rows and to output control signals causing the display to present a map comprising the polygon and lines within the polygon, the lines being based on the estimated geographic coordinates of the first number of consecutive rows.