# Aprroximate graph to function

there is a set of points which set a graph that is not linear. Is there any method to approximate a function that is close enough to this graph?

I've read some articles and got to know approximation using gaussianns, I'd like to know if there's another method I could use by employing only the points and not the graph they create.

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If you want a useful answer, you will need to supply more detail. As it stands your question is very confusing. –  Chris Godsil Jan 5 '13 at 18:21

I'm not sure what your use case is, but I would not use Lagrange Polynomial Interpolation Formula in this case. If you want to estimate a function, that is not what Lagrange Polynomials do. They create a unique polynomial which passes through all the points. This polynomial's degree (roughly corresponding to size and time needed to calculate) is directly dependent on the number of points ($\mathrm{degree} = \mathrm{points} - 1$).