From three vectors obtain the complete Vector that has the largest element, than the other two.

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Hello Goodnight.
I have 3 vectors that will constantly be changing the value of their elements. But the vector with the element greater than the elements of the other two vectors will be chosen. For example, of these three vectors the vector C would be chosen, since it has as element 18 and is the largest of the elements of the three vectors. The complete vector C will be chosen
A = [12 3 4 5 6]; B = [3 15 7 6 4]; C = [9 1 18 2 7];
In another combination it could be vector A or B depends on the maximum value of its elements.
How do I select the complete vector that contains at least one greater element than the other two?
Greetings and thanks.

Accepted Answer

Andrei Bobrov
Andrei Bobrov on 4 Apr 2018
Edited: Andrei Bobrov on 4 Apr 2018
A=[12 3 4 5 6];
B=[ 3 15 7 6 4];
C=[ 9 1 18 2 7];
R = [A(:);B(:);C(:)];
n = numel(A);
ii = ceil((1:3*n)/n);
[~,i1] = max(R);
out = R(ii == ii(i1));
or just
R = [A(:),B(:),C(:)];
[~,ii] = max(max(R));
out = R(:,ii);

More Answers (1)

Tarsem Singh Khalsa
Tarsem Singh Khalsa on 4 Apr 2018
If you can combine the three vectors in a single matrix R (say), you can find the max value of the matrix and then find which row it belongs to.
Max_value = max(max(R)) % to find max value
[Row_Id,Clmn_Id] = find(R==Max_Value)
Row_Id and Clmn_Id will give you the position of the value in matrix
  1 Comment
Ricardo Gutierrez
Ricardo Gutierrez on 4 Apr 2018
I made you suggest me: clc; clear; close all; format short
A=[12 3 4 5 6]; B=[ 3 15 7 6 4]; C=[ 9 1 18 2 7];
R = [A',B',C'] Max_value = max(max®) % to find max value [Row_Id,Clmn_Id] = find(R==Max_Value) . And this was the answer: Max_value = 18 Undefined function or variable 'Max_Value'. Error in Practica (line 9) [Row_Id,Clmn_Id] = find(R==Max_Value)
I wrote the wrong code?? Greetings.

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