sorting a matrix based on L2 norm of each row

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riad didou
riad didou 2020-4-23
评论： Ameer Hamza 2020-4-24
Hello all
Please how to code; descendent sorting a matrix C(9000x9000) based on L2 norm of each row then reconstruct a new ranked matrix.
Thanks in advance

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-4-23
编辑：Ameer Hamza 2020-4-23
Try this
M = rand(9000); % random matrix for example
[~, idx] = sort(vecnorm(M, 2, 2), 'descend');
M_sorted = M(idx, :);

更多回答（1 个）

David Hill
David Hill 2020-4-23
[~,idx]=sortrows(vecnorm(C,2,2));
C=C(idx,:);

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