simulink error Variable 'img_r' is not fully defined on some execution paths.

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tsai kai shung 2017-10-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361930-simulink-error-variable-img_r-is-not-fully-defined-on-some-execution-paths

评论： Rik 2017-10-18

function y = fcn(u,img1,img2, data)

Ne = u; L = img1; re = img2;

for n=1:Ne [r,c] = find(L==n); % Extract letter n1=re(min(r):max(r),min(c):max(c)); % Resize letter (same size of template) img_r=imresize(n1,[42 24]); end y = img_r;

why y is error?

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Rik 2017-10-18

Why do you think img_r would exist without defining it?

Rik 2017-10-18

I seem to have misread. Selecting your code and pushing the {}Code button would help with making the code more readable.

You should copy the entire error message.

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Answer 1

tsai kai shung 2017-10-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361930-simulink-error-variable-img_r-is-not-fully-defined-on-some-execution-paths#answer_286396

how to defining img_r i think take img_r to y so i don't need defining it.

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Answer 2

tsai kai shung 2017-10-18

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/361930-simulink-error-variable-img_r-is-not-fully-defined-on-some-execution-paths#answer_286418

在 MATLAB Online 中打开

   function y = fcn(L,Ne,re)
for n=1:Ne
        [r,c] = find(L==n);
        % Extract letter
        n1=re(min(r):max(r),min(c):max(c));  
        % Resize letter (same size of template)
        img_r=imresize(n1,[42 24]);
end 
y = img_r;

the error message is:Variable 'img_r' is not fully defined on some execution paths.

Function 'MATLAB Function1' (#487.229.234), line 9, column 5: "img_r" Launch diagnostic report.

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Rik 2017-10-18

You should answer in comments, not in answers. The answer section is for solutions to the problem, not for responses to clarification.

You should rethink what you want to do. This code seems to overwrite the result on every iteration. The error you are getting is strange, except if Ne is allowed to be 0.

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