How can I which value that be used to calculate a function
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Tianze Li
le 14 Mai 2019
Commenté : Fangjun Jiang
le 17 Mai 2019
In this casue, I difine a range for x and y, and then calculated the min value of L, but how do i find which x vaule and y value to calculate the min L? Many thanks!!!!!
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Fangjun Jiang
le 14 Mai 2019
Modifié(e) : Fangjun Jiang
le 14 Mai 2019
You need to run min() twice
A=magic(5);
[MinInCol,RowIndex]=min(A);
[MinValue,ColIndex]=min(MinInCol);
Position=[RowIndex(ColIndex),ColIndex];
or better
[MinValue,Index]=min(A(:));
[Ix,Iy]=ind2sub(size(A),Index)
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Fangjun Jiang
le 17 Mai 2019
Not clear what you mean. Maybe in your example, you are looking for x(Ix), y(Iy)?
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Steven Lord
le 14 Mai 2019
Since you indicate that you're using release R2019a, call min with the 'linear' option and two output arguments. This will give you the linear index of the minimum value, and you can use that index into x and y.
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