smoothing spline and save

I have a data x and y... I fitted smoothing spline. Now i want to save the fit parameters so that i can plot it in some other softwares with other data files.

I followed following code... which is doing exactly what i want...

a=load('v_band.dat');

x=a(:,16);

y=a(:,4);

options = fitoptions('Method','Smooth','SmoothingParam',0.842)

[f,gof,out] = fit(x,y,'smooth',options)

plot(f, x, y)

Or is there any other method by which i can do so...???