Fittype TestAnonymousFunction Argument Error

2017 10 4
1 个回答
更新时间：2017 10 7
8 次查看（30 天）

0 个投票

Can someone please explain why I keep getting this error?
Error using fittype>iTestAnonymousFunctionArgumentOrder (line 811) The coefficients must come before the problem parameters.
I have my function as:
fun=@(F,PS,fp,fis,x)...
longobjfun(x,F,PS,fp,fis,A);
ft = fittype(...
fun, ...
'problem',{'A'},...
'coeff', {'F','PS','fp','fis'});
I know that for fittype, the anonymous function has to have a form of:
fun = @(fitparameters, problemparameters, independent) expression;
It stated that problemparameters can be optional. How do I remove this? I'm not sure what to do with this.

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回答（1 个）

Chandani Madnani
Chandani Madnani 2017-10-6

0 个投票

Modify the code as shown below to pass the Problem parameter and see if it works:
fun=@(F,PS,fp,fis,A,x)... longobjfun(x,F,PS,fp,fis,A); ft = fittype(... fun, ... 'problem',{'A'},... 'coeff', {'F','PS','fp','fis'});

4 个评论
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Arbol
Arbol 2017-10-6
I have tried and rearrange like yours, I get this error: Error using fittype/testCustomModelEvaluation (line 12) Expression model_2cxm_cfit(x,fp,PS,vp,ve,A) is not a valid MATLAB expression, has non-scalar coefficients, or cannot be evaluated: Error while trying to evaluate FITTYPE function :
Matrix dimensions must agree.
Arbol
Arbol 2017-10-6
Also, on one note, can A be a vector? the problem value?
Arbol
Arbol 2017-10-7
编辑：Arbol 2017-10-7
I have got this fixed. But I have no idea how it was fixed. It could due to that i didnt clear the fittype, so it still keep the old fittype and carry over to the next run.
Arbol
Arbol 2017-10-7
My fix is as followed (for future reference if someone look at this):
fun=@(F,PS,fp,fis,x)...
longobjfun(F,PS,fp,fis,A,x);
ft = fittype(fun, ...
'independent',{'x'},...
'coeff', {'F','PS','fp','fis'});

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Arbol
2017-10-4

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Arbol
2017-10-7

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