[Ifit-users] Fitting a piecewise function

[Sales, Morten]

Dear iFit users

I have a dataset that I would like to fit, and I was hoping that I might be able to get help from this mailing list.

I would like to fit a piecewise function, so for one x-range, the data should be fitted by function 1, for the the next x-range it should be function 2, etc.

The functions are 'knotted' together so that the end point of one function corresponds to the start point of the next.

Among the fitted parameters I would also like to have the length of an x-range where the function is constant.

Is this something I can do with iFit?
(I run iFit-1.3.1a in MatLab R2012a in Mac OS X 10.7.5)

Best Regards,
Morten Sales

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