trajectory.py 文件源码

def during(self, t1, t2):

        t1 = np.datetime64(t1, unit=self.unit)
        t2 = np.datetime64(t2, unit=self.unit)

        mask = ((self.t > t1) & (self.t < t2))

        if(np.all(mask == False, axis = 0)):
            return None

        result = Trajectory(self.x[mask], self.y[mask], self.t[mask])
        return result