Patent ID: 8548666

Claim:
A method of steering an agricultural machine comprising: storing in a database a plurality of auto-guidance data files for a farm, the farm comprising a plurality of fields, each of the plurality of fields having a corresponding auto-guidance data file, wherein each auto-guidance data file comprises at least data defining a wayline; receiving, at a processor, location information; determining, by the processor, a location of the agricultural machine based on the received location information; if the location of the agricultural machine is determined to be on a first one of the plurality of fields on the farm, loading, into a memory, an auto-guidance data file from the plurality of auto-guidance data files for the field on which the machine is located based on the determined location of the machine; propelling the agricultural machine on the farm; determining, by the processor, a new location of the agricultural machine based on received location information and if the location of the machine is determined to be on a second field of the farm different than the first field where previously located, automatically unloading from the memory the auto-guidance data file for said first field and loading into the memory from the database an auto-guidance data file from the plurality of auto-guidance data files for the second field on which the machine is now located based on the determined location of the machine.