finding index of min value in a matrix

Hello

I have a matrix and I want to compare three element of this matrix and find min between them and then I want to know the column number of min element.

Could you help me ?

thanks

[Azzi Abdelmalek]

post an example

Answer 1

[Mohammad Abouali]

So, you know what elements of the matrix you want to check?

If that is so, then let's say the row and column of those three elements are defined as:

rowIdx=[r1,r2,r3];
colIdx=[c1,c2,c3];

mat3Elements=myMatrix(sub2ind(size(myMatrix),rowIdx,colIdx);
[minValue,minIdx]=min(mat3Elements);

disp(['Min values is: ' num2str(minValue)])
disp('column: ')
disp(colIdx(minIdx))

if you want the min value of the entire matrix that is easier

[minValue,minIdx]=min(myMatrix(:));
disp(['Min values is: ' num2str(minValue)])
disp('column: ')
[~,col]=ind2sub(size(myMatrix),minIdx);
disp(col)

Answer 2

[Degar DC]

a is the result matrix

[ min_value , min_index ]=min(a)