A method for altering a swath path of a vehicle includes the steps of: loading a base swath path and an original swath width into a memory of the vehicle generating a plurality of swath paths from the base swath path and the original swath width, each of the generated swath paths defining at least two geographic locations measuring a current geographic location of the vehicle determining a difference between the current geographic location and a geographic location of a swath path nearest to the current geographic location determining a number of swath paths that the generated swath path nearest to the current geographic location is subsequent to the base swath path dividing the difference by the determined number of swath paths to produce a swath width remark distance and adding the swath width remark distance to the original swath width to produce a modified swath width.
