Specifying values in 2D array when I know the indices

3 views (last 30 days)
I have the short example below. With the max function I find the indices of the maximum values whithin each column of array A. I want an array C which will include the values of array B by using the idx values I specified before. So, C will be C = [1 2 3 4 5]. How can I do that without a for-loop?
A = [1 1 1 1 100;
100 1 1 1 1
1 1 100 1 1
1 1 1 100 1;
1 100 1 1 1];
[~,idx] = max(A,[],1);
B = [1 1 1 1 5;
1 1 1 1 1
1 1 3 1 1
1 1 1 4 1;
1 2 1 1 1];

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 30 Nov 2022
A = [1 1 1 1 100;
100 1 1 1 1
1 1 100 1 1
1 1 1 100 1;
1 100 1 1 1];
[~,idx] = max(A,[],1,'linear')
idx = 1×5
2 10 13 19 21
B = [1 1 1 1 5;
1 1 1 1 1
1 1 3 1 1
1 1 1 4 1;
1 2 1 1 1];
C=B(idx)
C = 1×5
1 2 3 4 5

More Answers (0)

Categories

Find more on Get Started with MATLAB in Help Center and File Exchange

Tags

Products


Release

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!