optimize.py 文件源码

def linear(cls, time, y0, yf):
        """ return linear function values that array size is same as time length

        Args:
            time (array_like) : time
            y0 (float): initial value
            yf (float): final value

        Returns:
            (N, ) ndarray

        """
        x = np.array([time[0], time[-1]])
        y = np.array([y0, yf])
        f = interpolate.interp1d(x, y)
        return f(time)