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Non linear fit with more than 2 dimensions!, does mpfit work? [message #79939]

Wed, 11 April 2012 21:57

Steve Daal
Messages: 13
Registered: October 2011

Junior Member

IDL-ers,

I have a complex fitting problem that I am tackling. my model function
has the form:

Y(n+1) = A(1 - exp(C*Yn)) * [X(n+1)/exp(D-Xn - Yn)]

where Yn and Xn refer to some values at time= n, and Y(n+1), X(n+1)
refer to updated values at time =n+1. A,B,C, and D are the parameters
of the fit.

I am aware of mpfit and I think this is doable if I have Yn and Xn
only, but I am really puzzled with the existence of the n+1 terms.

Thanks,
Steve

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