Get the value from coloumn correspond to the another coloimn max element

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Konstantin Shchukin 2022-7-17

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https://ww2.mathworks.cn/matlabcentral/answers/1762210-get-the-value-from-coloumn-correspond-to-the-another-coloimn-max-element

回答： Star Strider 2022-7-17

I have a matrix n x 2. In the first coloumn some value is maximal. How can I get a value from the second coloumn which corresponses to the max value from the first coloumn?

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Answer 1

Star Strider 2022-7-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1762210-get-the-value-from-coloumn-correspond-to-the-another-coloimn-max-element#answer_1009330

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Try this —

M = rand(10,2)
M = 10×2
    0.4981    0.4601
    0.5309    0.6751
    0.5092    0.7711
    0.8724    0.4981
    0.8387    0.6402
    0.4003    0.2339
    0.6984    0.1510
    0.7369    0.9120
    0.5813    0.9445
    0.4677    0.8357
[Col1Max,idx] = max(M(:,1))
Col1Max = 0.8724
idx = 4
Result = M(idx,2)
Result = 0.4981