How to find maximal values in matrix?

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Tien Tran 2016-4-10

回答： Star Strider 2016-4-10

I have a matrix: A =[1, 128; 2, 300; ...;20, 500;...;99, 10; 100, 0];
the row I need to extract be B=[20,500], with 500 is maximal value of 2sd colum.

How I can do?

Star Strider 2016-4-10

This works:

A =[1, 128; 2, 300;20, 500;99, 10; 100, 0];
B =  A(A(:,2) == max(A(:,2)),:)
B =
      20   500

It compares the second column of ‘A’ with the maximum of the second column of ‘A’, and then selects that entire row.

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