Advanced fitting to analytical functions

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Peter
Peter 2014-9-9
评论： Peter 2014-9-9
Is there a more advanced version of polyfit, that also automatically fits to other non-polynomial functions (exp, log, trigonometric, non-integer powers) and combinations thereof?
e.g. if i had some (moderately) noisy data following a sqrt curve, this code would detect that and spit out an sqrt(x) type of formula

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Iain
Iain 2014-9-9
"fit" will try to fit specified functions. - You'll need to play around with it.
There's a 3rd party thing called Eureqa that may be more suited to finding functions that closely represent your data, whatever it is.

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