A method for controlling a position of a display element, comprising the steps: —measuring a position of a control lever, —projecting the position of the lever into a base plane, in order to determine a first set of coordinates, —determining a circle of positions, —determining a square circumscribing the circle of positions, —projecting, onto the circumscribed square, at least one coordinate of the first set of coordinates, —calculating a second set of coordinates in a Cartesian frame of reference, on the basis of the projection of the at least one coordinate of the first set of coordinates onto the circumscribed square.