Find the highest possible value in a matrix that complies to a certain range

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Duong Cao 2018-1-26

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关闭： MATLAB Answer Bot 2021-8-20

Hello, I couldn't find a way to word my question better since English is not my native language.

For example I have this matrix A = [1 2 3; 2 2 4; 3 2 5; 4 2 6]

I want to display the elements of the lowest row in which the value of third element is < 7

So in this example, the values would be 4 and 2 and because they are the lowest row and 6 is still smaller than 7.

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KSSV 2018-1-26

What do you mean by elements of the lowest row?

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Answer 1

Domanic 2018-1-26

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I think I understand your question. You are interested in the row which is closest to the bottom of the matrix ('lowest' in that sense). These are actually rows with the highest index. A one line solution is:

A(find(A(:,3)<7,1,'last'),1:2)

This finds the row index of the last element of the third column of matrix, A, which has a value less than 7. Then, it displays the first two columns of the row with that index. Hope that helps.