How can I sort a matrix elementwise ?

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Gayan Lankeshwara
Gayan Lankeshwara 2019-10-21
评论： Gayan Lankeshwara 2019-10-21
Hi, I need to sort a matrix elementwise and get the results to a single vector without losing the index of each element.
For example,
A = [3, 4 ; 6, 2]
The sorted vector should be ,
B = [2;3;4;6]
without losing the information of each and every element in the original matrix.
Thank you.

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2019-10-21
A = [3, 4 ; 6, 2];
[m,~] = size(A);
[B,i] = sort(A(:));
index = [mod(i-1,m) + 1, ceil(i/m)];

更多回答（1 个）

Stephan
Stephan 2019-10-21
B = sort(reshape(A,[],1))
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Stephan
Stephan 2019-10-21
[B, idx] = sort(reshape(A,[],1))
[row,col] = ind2sub([size(A,1), size(A,2)],idx)
Gayan Lankeshwara
Gayan Lankeshwara 2019-10-21
Hi Stephan,
This is really what I needed and the inbuilt in2sub function is more powerful I guess.
Thanks.

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