How to get equation from s set of data

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To derive an equation from a set of data obtained from Fourier output, it is essential to consider the smoothness of the data. Cubic splines are suggested as a viable method for generating an equation when the specific function type is unknown. This approach allows for flexible modeling of the data without requiring prior knowledge of the underlying function. The effectiveness of cubic splines may vary based on the characteristics of the dataset. Exploring this method could provide a suitable solution for the problem at hand.
akter
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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
 
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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.
 
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