Fitting Functions

Asked by Naty S on 23 Jan 2012

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I have a Vector of Data. and i want to do a fitting to the Vector. but I want the fit to be in the shape of:

A/x+B/x^2+C/x^3...

is there any Known function I am missing?or do i need to write my own code. if so anyone is familiar with a good way to do that?

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3 Answers

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Answer by the cyclist on 23 Jan 2012

Accepted Answer

If you have the Statistics Toolbox, you can use the function nlinfit() to do that.

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Answer by Naty S on 27 Jan 2012

Thanks

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Answer by Frederic Moisy on 30 Jan 2012

Hi,

First solution: replace x by y=1/x, then use polyfit to fit your data with respect to y.

Second solution: install the Ezyfit toolbox, http://www.mathworks.com/matlabcentral/fileexchange/10176-ezyfit-2-40

and type

showfit ('A/x+B/x^2+C/x^3')

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Naty S (view profile)