find same pair values from two variables

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Mubashir 2017-4-25

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https://ww2.mathworks.cn/matlabcentral/answers/337143-find-same-pair-values-from-two-variables

评论： Stephen23 2017-4-25

I have two variables, each variable consist of two columns but different rows Now i have to match pairs in row whether which pairs are common in both variables or not? Attached figure shows variable with two values. Thanks

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Stephen23 2017-4-25

Do NOT use ismember

Those are floating point values. It would be an extremely bad idea to use ismember on floating point values, because ismember tests for equivalence of the values. Really bad idea:

https://www.mathworks.com/matlabcentral/answers/57444-faq-why-is-0-3-0-2-0-1-not-equal-to-zero

https://www.mathworks.com/matlabcentral/answers/316183-floating-point-numeric-problem

https://www.mathworks.com/matlabcentral/answers/272092-basic-indexing-question-find-ismember

https://www.mathworks.com/matlabcentral/answers/328297-i-am-facing-a-problem-with-ismember-subfunciton-in-matlab

https://www.mathworks.com/matlabcentral/answers/281050-ismember-function-and-find-function-in-the-matlab-is-not-responding-for-some-values-please-check-th

Those values should be compared using a tolerance, or with ismembertol.

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