How to remove duplicates in matrix with condition

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Berk Gulmez 2019-10-6

评论： Berk Gulmez 2019-10-6

Hi everyone,

I just want to remove duplicates from NX2 matrices according to greatest value from column 2. for instance lets say we have 5x2 matrices;

X = [1 10;2 20;3 30;3 31;3 32]

at the result ı want to find

Xresult = [1 10;2 20;3 32]

So, I want to eliminate duplicates in "3" values and I want to see greatest "3" value in order to interpret my work.

Regards,

Bruno Luong 2019-10-6

X = [1 10;2 20;3 30;3 31;3 32];
Xs=sortrows(X);
[~,I]=unique(Xs(:,1),'last');
XResult = Xs(I,:)

Berk Gulmez 2019-10-6

thank you! This is exactly what I want.

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