How to get the indices of the rows of the matrix which are shuffled ?

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HIRAKJYOTI BASUMATARY 2017-11-18

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关闭： MATLAB Answer Bot 2021-8-20

I have a matrix A , which i have shuffled. Now how to get the indices of the rows which were shuffled . Just like the command 'sort' gives the indices of the elements sorted. Similarly , is there a command which would give me the indices of the rows interchanged. Please suggest . Thanks

function trial
    A=[3 2 1;4 5 6;6 7 8];
    shuffledArray = A(randperm(size(A,1)),:)
end

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per isakson 2017-11-18

编辑：per isakson 2017-11-18

在 MATLAB Online 中打开

>> A
A =
     3     2     1
     4     5     6
     6     7     8
>> ix = randperm(size(A,1))
ix =
     3     1     2
>> A(ix,:)
ans =
     6     7     8
     3     2     1
     4     5     6

Isn't it ix you are looking for?

HIRAKJYOTI BASUMATARY 2017-11-18

编辑：HIRAKJYOTI BASUMATARY 2017-11-18

Yes . So this way, i should first find the indices and then do the swap. Thank you very much for the suggestions

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Answer 1

Walter Roberson 2017-11-18

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sortrows()

How to get the indices of the rows of the matrix which are shuffled ?

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