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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: nlinfit
Replies: 1   Last Post: Mar 11, 2013 3:54 PM

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Tom Lane

Posts: 855
Registered: 12/7/04
Re: nlinfit
Posted: Mar 11, 2013 3:54 PM
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>> > function f=order1(a,x1,x2)
>> > f=(a(1)*x1)+((a(2)*a(3)*x1)/(1+a(3)*x1+a(4)*x2));

...
> I did that but now I'm getting this error:
>
> ??? Error using ==> nlinfit at 127
> MODELFUN should return a vector of fitted values the same length as Y.


I suspect you want elementwise division using "./" instead of "/" for matrix
division.

-- Tom





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