How to get equation from s set of data

[akter]

Hi,
I have a set of data which i got from Fourier output.Is it possible to get an equation from those data. I cannot use curve fitting because i have no idea what type of function i will get.

Thanks in advance,
Akter

 

[hotvette]

I think it depends on how smooth the data are. When I was a research assistant in college we used cubic splines for the very reason you state.