>> TourLength Not enough input arguments. Error in TourLength (line 3) n=numel(tour);

Question

Wonseh 2022-12-2

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https://ww2.mathworks.cn/matlabcentral/answers/1869437-tourlength-not-enough-input-arguments-error-in-tourlength-line-3-n-numel-tour

回答： Joseph 2023-3-16

function L=TourLength(tour,model)
n=numel(tour);
tour=[tour tour(1)];
L=0;
for k=1:n
    
    i=tour(k);
    j=tour(k+1);
    
    L=L+model.d(i,j);
    
end
end

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Wonseh 2022-12-2

How can i solve it

Askic V 2022-12-2

Most probably you're trying to execute this as a Matlab script and not as a function. You need to properly call the function from command window or from the other script (or function) with specified arguments.

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Answer 1

Gokul Nath S J 2022-12-7

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Hi Wonseh,

As per my understanding, you have created a function TourLength containing 2 input arguments. If you directly run this function in MATLAB by clicking the run button, you will encounter a similar error. For example, if executing from the command window you might need to enter the following command

TourLength(input_argument1, input_argument2);

Also, you might need to ensure that the arguments passed as the function parameters are appropriate. Inappropriate arguments can also lead to numel error.