HOW CAN I SORTED MY MATRIX DESCEND

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ali hadjer
ali hadjer 2015-11-22
评论： ali hadjer 2015-11-22
I HAVE A MATRIX M=[ 1 2 3 4 5 ;1 20 54 6 40] I WANT TO SORT MY MATRIX WITHIN THE SECOND COLON WITH ASCENDING WAY TO OBTEIND THIS RESULT :
M=[3 5 2 4 1;54 40 20 6 1]
HOW CAN I DO

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Andrei Bobrov
Andrei Bobrov 2015-11-22
编辑：Andrei Bobrov 2015-11-22
M=[ 1 2 3 4 5 ;1 20 54 6 40];
[~,ii] = sort(M(2,:),'descend');
out = M(:,ii);
or
out = sortrows(M',-2)';

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