solve equation obtained from a fit function

Hi, I know how to use function "fit" to fit data (X,Y). Par ex: after fitting, I have a fit function like that : y=fit(x). My problem is that how to solve this equation when given a value of y which does not belong to Y data set. Thanks for your helps ! Regards, Winn

[fran tedesco]

Hi! i have the same problem. Have you find the way?

Answer 1

[QuocBao Vu]

hmm I don't think there is a function called fit in matlab and you elaborate on how you found the parameters of the function or method you used

Answer 2

[Win co]

In fact it existes. Refer to http://www.mathworks.fr/help/toolbox/curvefit/fit.html