sorting a matrix based on L2 norm of each row

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

Answer 1

[Ameer Hamza]

Try this

M = rand(9000); % random matrix for example

[~, idx] = sort(vecnorm(M, 2, 2), 'descend');
M_sorted = M(idx, :);

[riad didou]

I will try it ..Thanks a lot brother

[Ameer Hamza]

I am glad to be of help.

Answer 2

[David Hill]

[~,idx]=sortrows(vecnorm(C,2,2));
C=C(idx,:);