Method for automatically determining a boundary of a partial area of a total area

A motor vehicle, comprising:

• a drive acting on at least one wheel of the motor vehicle;
• an energy storage system for the drive;
• and
• a computing device to automatically determine a boundary by a method comprising:
• dividing a total area of a map into a matrix of rectangular area segments;
• determining a partial area of the map, the partial area being associated with a connected subset of the rectangular area segments, the partial area being determined using an algorithm that determines a remaining range of the motor vehicle;
• initially start from a region of the total area not belonging to the partial area, finding a first boundary area segment of the partial area;
• entering a first point describing a position of the first boundary area segment into a list of points;
• after entering the first point, stepping along an edge of the partial area;
• for each further boundary area segment that is found, entering a corresponding further point describing a position of the further boundary area segment into the list of points;
• and
• when the first boundary area segment is reached again, determining the boundary from the list of points.