Randomly select a column

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Md Nazmul Hoque 2022-6-4

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https://ww2.mathworks.cn/matlabcentral/answers/1733965-randomly-select-a-column

评论： Md Nazmul Hoque 2022-6-5

采纳的回答： Matt J

n= 3*100 matrix

i want to select 20 non repeating random column

so, final matrix will be

x=3*20 ;

where 3 rows should be the corresponding column value of the original matrix

Any help would be really appreciated.

Thanks

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Torsten 2022-6-4

在 MATLAB Online 中打开

Why do you ask the same question again ?

https://de.mathworks.com/matlabcentral/answers/1733475-how-to-randomly-select-an-array-of-20-nonrepeating-values-from-another-array-which-has-100-values-wi#answer_978600?s_tid=prof_contriblnk

Here is (again) the answer:

x=n(:,sort(randperm(100,20)))

Md Nazmul Hoque 2022-6-5

sorry for that bro, i'm kinda new.

i wanted the specific solution.

in the last one , i thought i couldn't explain it properly

thats why. anyway thank you for your support.

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采纳的回答

Matt J 2022-6-4

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https://ww2.mathworks.cn/matlabcentral/answers/1733965-randomly-select-a-column#answer_979080

编辑：Matt J 2022-6-4

在 MATLAB Online 中打开

x=n(:,randperm(100,20))

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Md Nazmul Hoque 2022-6-5

Thank you Bro.

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MATLAB Language Fundamentals Matrices and Arrays Creating and Concatenating Matrices

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