getting the data from smooth

Hi,
I am using the "smooth" function in gnuplot

for example:
plot "data_file" u 1:2:(1.0) smooth acspline w l

and it works perfectly.

I'm looking for a way of printing the data generated from the
smoothing to be able to use it in another application.
I've read the do***entation and searched the web but haven't been able
to find anything.

Thanks,

Vincent