A computer-implemented method for forming a graphic on real property includes the acts of defining the graphic to be formed on the real property, scaling the graphic, or portion thereof, to a designated portion of the real property, and mapping the scaled graphic, portion thereof, to the selected portion of the real property, the act of mapping including defining a plurality of points on the designated portion of the real property to be altered to form the graphic. The method also includes the act of inputting the mapped graphic, or portion thereof, into a physical, non-transient memory device operatively associated with a navigation system, the navigation system including a part of, and providing inputs to, a control system for at least one computer-controlled mechanism, the control system being configured to selectively actuate at least one computer-controlled mechanism to cause at least one computer-controlled mechanism to actuate and alter only the plurality of points on the designated portion of the real property or sub-portion thereof. The method also includes traversing the designated portion of the real property with at least one computer-controlled mechanism and controlling at least one computer-controlled mechanism, during the traversing of the designated portion of the real property, to selectively alter only the plurality of points on the designated portion of the real property or sub-portion thereof, to form the graphic, or portion thereof, on the designated portion of the real property, contemporaneously with the act of altering or at a time subsequent thereto.Linvention concerne un procédé mis en œuvre par ordinateur pour former un graphique sur un bien réel, qui comprend les étapes consistant à définir le graphique à former sur le bien réel, mettre à léchelle le graphique, ou une partie de ce dernier, à une partie désignée du bien réel, et mapper le graphique mis à léchelle, ou une partie de ce dernier, à la partie sélectionnée du bien réel, laction
