Why this code says unrecognized function u?

Question

Sadiq Akbar 2023-2-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1915380-why-this-code-says-unrecognized-function-u

评论： Sadiq Akbar 2023-2-20

I had a GA code which was generated by GA in earlier MATLAB version. But I had used there global variables. Later on, I replaced the global variables and passed them to function. All the three codes are in the attachments. You can run the m-file "main.m" and get the results. But now here in MATLAB 2022b, I run the code, and it gives me the following error:

Unrecognized function or variable 'u'.

Error in myGA1>@(b)Vectorized(b,u,Noise) (line 17)

ga(@(b)Vectorized(b,u,Noise),nvars,[],[],[],[],lb,ub,[],[],options);

Error in createAnonymousFcn>@(x)fcn(x,FcnArgs{:}) (line 11)

fcn_handle = @(x) fcn(x,FcnArgs{:});

Error in makeState (line 58)

firstMemberScore = FitnessFcn(state.Population(initScoreProvided+1,:));

Error in galincon (line 24)

state = makeState(GenomeLength,FitnessFcn,Iterate,output.problemtype,options);

Error in ga (line 416)

[x,fval,exitFlag,output,population,scores] = galincon(FitnessFcn,nvars, ...

Error in myGA1 (line 17)

ga(@(b)Vectorized(b,u,Noise),nvars,[],[],[],[],lb,ub,[],[],options);

Error in main (line 23)

[x,fval,time] = myGA1(nvars,lb,ub,PopulationSize_Data,MaxGenerations_Data,FunctionTolerance_Data,ConstraintTolerance_Data);

Caused by:

Failure in initial user-supplied fitness function evaluation. GA cannot continue.

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Answer 1

the cyclist 2023-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/1915380-why-this-code-says-unrecognized-function-u#answer_1175145

I see that you have defined u in main(), but I don't see that you pass it to myGA1(). So, when myGA1() tries to pass it to Vectorize(), it's undefined.

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the cyclist 2023-2-20

编辑：the cyclist 2023-2-20

在 MATLAB Online 中打开

I edited your files so that

the call to myGA1 from main passes u as a function argument
the function definition for myGA1 accepts that argument

Now when I run your code, I get a different error. (See the red text below.) I don't know how to solve that error.

main
'Noise' is used in the following examples:
  ADC IBIS-AMI Model Based on COM
  Architectural 112G PAM4 ADC-Based SerDes Model
  Architectural 100G Dual-Summing-Node-DFE PAM4 SerDes Receiver Model

Error in myGA1>@(b)Vectorized(b,u,Noise) (line 17)
ga(@(b)Vectorized(b,u,Noise),nvars,[],[],[],[],lb,ub,[],[],options);

Error in createAnonymousFcn>@(x)fcn(x,FcnArgs{:}) (line 11)
fcn_handle = @(x) fcn(x,FcnArgs{:});

Error in makeState (line 58)
            firstMemberScore = FitnessFcn(state.Population(initScoreProvided+1,:));

Error in galincon (line 24)
state = makeState(GenomeLength,FitnessFcn,Iterate,output.problemtype,options);

Error in ga (line 416)
            [x,fval,exitFlag,output,population,scores] = galincon(FitnessFcn,nvars, ...

Error in myGA1 (line 17)
ga(@(b)Vectorized(b,u,Noise),nvars,[],[],[],[],lb,ub,[],[],options);

Error in main (line 23)
[x,fval,time] = myGA1(nvars,lb,ub,PopulationSize_Data,MaxGenerations_Data,FunctionTolerance_Data,ConstraintTolerance_Data,u);

the cyclist 2023-2-20

I don't have the Optimization Toolbox, so I can't really help you debug this.

Since we solved your original question here, I suggest that you accept my answer to this question, and open a new question. (I also don't fully understand what you are asking, so maybe give a little more detail about why you expect to see something different than what you are seeing.)

Sadiq Akbar 2023-2-20