finding index of min value in a matrix
7 views (last 30 days)
Show older comments
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
Accepted Answer
Mohammad Abouali
on 2 Dec 2014
Edited: Mohammad Abouali
on 2 Dec 2014
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)
0 Comments
More Answers (1)
See Also
Categories
Find more on Matrix Indexing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!