MATLAB Answers

maximum value of matrix

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ha ha
ha ha on 16 Aug 2019
Edited: ha ha on 16 Aug 2019
let's say , I have matrix
A=[3 1;4 9 ;5 7 ];
A=[3 1
4 9
5 7 ];
I can find the maximum value from matrix A is 9:
max_value=max(max(A));
How can I get the value is in same row of 9, that is, 4 ?

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Accepted Answer

madhan ravi
madhan ravi on 16 Aug 2019
[Val,ix]=max(A(:));
[r,~]=ind2sub(size(A),ix);
A(r,:) %complete row where maximum exists

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ha ha
ha ha on 16 Aug 2019
you assumed that , the value "4" is in the 1st column of matrix A. But, actually, I don't know where it is (It may be in 1st or 2nd column of matrix A)
Thanks so much madhan ravi
I edit form your answer
Stephen Cobeldick
Stephen Cobeldick on 16 Aug 2019
>> A = [3,1;4,9;5,7]
A =
3 1
4 9
5 7
>> [V,X] = max(A(:));
>> [R,C] = ind2sub(size(A),X);
>> A(R,3-C)
ans = 4
madhan ravi
madhan ravi on 16 Aug 2019
[Val,ix]=max(A(:));
[r,c]=ind2sub(size(A),ix);
Wanted = A(r,setdiff(1:size(A,2),c))

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More Answers (2)

KSSV
KSSV on 16 Aug 2019
[val,idx] = max(A(:)) ;
A(idx,:)

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ha ha
ha ha on 16 Aug 2019
Your answer is wrong. Plz check it again

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ha ha
ha ha on 16 Aug 2019
[Val,ix]=max(A(:));
[r,c]=ind2sub(size(A),ix);
A(r,setdiff(1:size(A,2),c),:);

  2 Comments

madhan ravi
madhan ravi on 16 Aug 2019
What’s the hurry before editing the comment?? XD . I was using my mobile to answer and I just mistyped the colon inside setdiff().
ha ha
ha ha on 16 Aug 2019
Sorry madhan ravi.
Thank so much for your prompt reply
Hope all bests to you.

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