1. A method for evaluating a trajectory function to be followed by a physical system, comprising the steps of: providing the trajectory function; determining a set of sampling points by sampling a trajectory based on the trajectory function in the time domain; associating a cell to each of the sampling points; assessing at least one cell metric for each of the cells; aggregating the at least one cell metric of the cells to obtain an aggregated metric measure; and evaluating the trajectory as determined by the provided trajectory function depending on the one or more aggregated metric measures.